SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 D D D D D D D D Members of the Texas Instruments SCOPE Family of Testability Products Members of the Texas Instruments Widebus Family Compatible With the IEEE Standard 1149.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 1A2 1A1 1OEAB GND 1LEAB 1CLKAB TDO V CC TMS 1CLKBA 1LEBA 1OEBA GND 1B1 1B2 1B3 SN74ABTH18502A, SN74ABTH182502A . . .
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 description (continued) Four dedicated test pins observe and control the operation of the test circuitry: test data input (TDI), test data output (TDO), test mode select (TMS), and test clock (TCK).
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 functional block diagram Boundary-Scan Register 1LEAB 1CLKAB 1OEAB 1LEBA 1CLKBA 1OEBA 1A1 60 59 VCC 62 54 55 VCC 53 C1 C1 1D 1D 63 51 C1 1D 1B1 C1 1D One of Nine Channels 2LEAB 2CLKAB 2OEAB 2LEBA 22 23 VCC 21 28 2CLKBA 27 VCC 30 2OEBA 2A1 C1 C1 1D 1D 10 40 C1 1D 2B1 C1 1D One of Nine Channels Bypass Register Boundar
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 Terminal Functions TERMINAL NAME DESCRIPTION 1A1–1A9, 2A1–2A9 Normal-function A-bus I/O ports. See function table for normal-mode logic. 1B1–1B9, 2B1–2B9 Normal-function B-bus I/O ports. See function table for normal-mode logic. 1CLKAB, 1CLKBA, 2CLKAB, 2CLKBA GND Normal-function clock inputs. See function table for normal-mode logic.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 test architecture Serial-test information is conveyed by means of a 4-wire test bus or TAP that conforms to IEEE Standard 1149.1-1990. Test instructions, test data, and test control signals all are passed along this serial-test bus. The TAP controller monitors two signals from the test bus, TCK and TMS.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 state diagram description The TAP controller is a synchronous finite state machine that provides test control signals throughout the device. The state diagram shown in Figure 1 is in accordance with IEEE Standard 1149.1-1990. The TAP controller proceeds through its states based on the level of TMS at the rising edge of TCK.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 Shift-DR (continued) While in the stable Shift-DR state, data is serially shifted through the selected data register on each TCK cycle. The first shift occurs on the first rising edge of TCK after entry to the Shift-DR state (i.e.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 register overview With the exception of the bypass and device-identification registers, any test register can be thought of as a serial-shift register with a shadow latch on each bit. The bypass and device-identification registers differ in that they contain only a shift register.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 data register description boundary-scan register The boundary-scan register (BSR) is 48 bits long. It contains one boundary-scan cell (BSC) for each normal-function input pin and one BSC for each normal-function I/O pin (one single cell for both input data and output data).
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 boundary-control register The boundary-control register (BCR) is three bits long. The BCR is used in the context of the boundary-run test (RUNT) instruction to implement additional test operations not included in the basic SCOPE instruction set. Such operations include PRPG, PSA, and binary count up (COUNT).
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 device-identification register The device-identification register (IDR) is 32 bits long. It can be selected and read to identify the manufacturer, part number, and version of this device.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 instruction-register opcode description The instruction-register opcodes are shown in Table 3. The following descriptions detail the operation of each instruction. Table 3.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 bypass scan This instruction conforms to the IEEE Standard 1149.1-1990 BYPASS instruction. The bypass register is selected in the scan path. A logic 0 value is captured in the bypass register during Capture-DR. The device operates in the normal mode. control boundary to high impedance This instruction conforms to the IEEE Standard 1149.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 boundary-control-register opcode description The BCR opcodes are decoded from BCR bits 2–0 as shown in Table 4. The selected test operation is performed while the RUNT instruction is executed in the Run-Test/Idle state.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 pseudo-random pattern generation (PRPG) A pseudo-random pattern is generated in the shift-register elements of the selected BSCs on each rising edge of TCK, updated in the shadow latches, and applied to the associated device output-mode I/O pins on each falling edge of TCK.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 pseudo-random pattern generation (PRPG) (continued) 2B9-I/O 2B8-I/O 2B7-I/O 2B6-I/O 2B5-I/O 2B4-I/O 2B3-I/O 2B2-I/O 2B1-I/O 1B9-I/O 1B8-I/O 1B7-I/O 1B6-I/O 1B5-I/O 1B4-I/O 1B3-I/O 1B2-I/O 1B1-I/O 2A9-I/O 2A8-I/O 2A7-I/O 2A6-I/O 2A5-I/O 2A4-I/O 2A3-I/O 2A2-I/O 2A1-I/O 1A9-I/O 1A8-I/O 1A7-I/O 1A6-I/O 1A5-I/O 1A
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 parallel-signature analysis (PSA) Data appearing at the selected device input-mode I/O pins is compressed into a 36-bit parallel signature in the shift-register elements of the selected BSCs on each rising edge of TCK.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 parallel-signature analysis (PSA) (continued) 2B9-I/O 2B8-I/O 2B7-I/O 2B6-I/O 2B5-I/O 2B4-I/O 2B3-I/O 2B2-I/O 2B1-I/O 1B9-I/O 1B8-I/O 1B7-I/O 1B6-I/O 1B5-I/O 1B4-I/O 1B3-I/O 1B2-I/O 1B1-I/O 2A9-I/O 2A8-I/O 2A7-I/O 2A6-I/O 2A5-I/O 2A4-I/O 2A3-I/O 2A2-I/O 2A1-I/O 1A9-I/O 1A8-I/O 1A7-I/O 1A6-I/O 1A5-I/O 1A4-I/O
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 simultaneous PSA and PRPG (PSA/PRPG) Data appearing at the selected device input-mode I/O pins is compressed into an 18-bit parallel signature in the shift-register elements of the selected input-mode BSCs on each rising edge of TCK.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 simultaneous PSA and PRPG (PSA/PRPG) (continued) 2B9-I/O 2B8-I/O 2B7-I/O 2B6-I/O 2B5-I/O 2B4-I/O 2B3-I/O 2B2-I/O 2B1-I/O 1B9-I/O 1B8-I/O 1B7-I/O 1B6-I/O 1B5-I/O 1B4-I/O 1B3-I/O 1B2-I/O 1B1-I/O 2A9-I/O 2A8-I/O 2A7-I/O 2A6-I/O 2A5-I/O 2A4-I/O 2A3-I/O 2A2-I/O 2A1-I/O 1A9-I/O 1A8-I/O 1A7-I/O 1A6-I/O 1A5-I/O 1A4-I
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 simultaneous PSA and binary count up (PSA/COUNT) Data appearing at the selected device input-mode I/O pins is compressed into an 18-bit parallel signature in the shift-register elements of the selected input-mode BSCs on each rising edge of TCK.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 simultaneous PSA and binary count up (PSA/COUNT) (continued) 2B9-I/O 2B8-I/O 2B7-I/O 2B6-I/O 2B5-I/O 2B4-I/O 2B3-I/O 2B2-I/O 2B1-I/O 1B9-I/O 1B8-I/O 1B7-I/O 1B6-I/O 1B5-I/O 1B4-I/O 1B3-I/O 1B2-I/O 1B1-I/O 2A8-I/O 2A7-I/O 2A6-I/O 2A5-I/O 2A4-I/O 2A3-I/O 2A2-I/O 2A1-I/O MSB 2A9-I/O LSB = = 1A9-I/O 1A8-I/O 1A7-I
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 timing description All test operations of the ’ABTH18502A and ’ABTH182502A are synchronous to TCK. Data on the TDI, TMS, and normal-function inputs is captured on the rising edge of TCK. Data appears on the TDO and normal-function output pins on the falling edge of TCK.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 timing description (continued) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Select-IR-Scan Select-DR-Scan Update-DR Exit1-DR Capture-DR Select-DR-Scan Update-IR ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ Test-Logic-Reset ÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ Exit1-IR Shift-IR Capture-IR Select-IR-Scan TAP C
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 recommended operating conditions SN54ABTH18502A SN74ABTH18502A MIN MAX MIN MAX 4.5 5.5 4.5 5.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) SN54ABTH18502A PARAMETER VIK VOH VOL II IIH IIL TEST CONDITIONS TA = 25°C TA = –55°C to 125°C † MIN MAX MIN MAX TYP VCC = 4.5 V, VCC = 4.5 V, II = –18 mA IOH = –3 mA VCC = 5 V, VCC = 4.5 V, IOH = –3 mA IOH = –24 mA VCC = 4.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) SN74ABTH18502A PARAMETER VIK VOH TEST CONDITIONS VCC = 4.5 V, VCC = 4.5 V, II = –18 mA IOH = –3 mA VCC = 5 V, VCC = 4 4.5 5V VOL II IIH IIL VCC = 4 4.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 timing requirements over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (normal mode) (see Figure 14)1 SN54ABTH18502A fclock Clock frequency tw Pulse duration tsu Setup time MIN MAX 0 100 CLKAB or CLKBA MAX 0 100 3.8 3.5 LEAB or LEBA high 3.5 3.5 3.5 3.5 4.0 3.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 switching characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (normal mode) (see Figure 14)1 SN54ABTH18502A PARAMETER fmax tPLH tPHL tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ FROM (INPUT) TO (OUTPUT) CLKAB or CLKBA A or B B or A CLKAB or CLKBA B or A LEAB or LEBA B or
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 switching characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (test mode) (see Figure 14) PARAMETER fmax tPLH tPHL tPLH tPHL tPZH tPZL tPZH tPZL tPHZ tPLZ tPHZ tPLZ FROM (INPUT) TO (OUTPUT) TCK TCK↓ A or B TCK↓ TDO TCK↓ A or B TCK↓ TDO TCK↓ A or B TCK↓ TDO VCC
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 recommended operating conditions SN54ABTH182502A VCC VIH Supply voltage VIL VI Low-level input voltage MAX MIN MAX 4.5 5.5 4.5 5.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK port TDO A port, TEST CONDITIONS VCC = 4.5 V, VCC = 4.5 V, II = –18 mA IOH = –3 mA VCC = 5 V, VCC = 4 4.5 5V VOH B port VCC = 4.5 V, VCC = 5 V, 5V VCC = 4 4.5 A port, port TDO VCC = 4 4.5 5V B port VCC = 4 4.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) (continued) PARAMETER Ci Control inputs TEST CONDITIONS MIN TA = 25°C TYP† MAX VI = 2.5 V or 0.5 V Cio A or B ports VO = 2.5 V or 0.5 V Co TDO VO = 2.5 V or 0.5 V † All typical values are at VCC = 5 V.
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 switching characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (normal mode) (see Figure 14)12 PARAMETER FROM (INPUT) TO (OUTPUT) fmax CLKAB or CLKBA tPLH tPHL A B tPLH tPHL B A tPLH tPHL CLKAB B tPLH tPHL CLKBA A tPLH tPHL LEAB B tPLH tPHL LEBA A tPZH t
SN54ABTH18502A, SN54ABTH182502A, SN74ABTH18502A, SN74ABTH182502A SCAN TEST DEVICES WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS SCBS164E – AUGUST 1993 – REVISED DECEMBER 1996 PARAMETER MEASUREMENT INFORMATION 7V S1 500 Ω From Output Under Test Open GND CL = 50 pF (see Note A) 500 Ω TEST S1 tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open 7V Open LOAD CIRCUIT 3V 1.5 V Timing Input 0V tw tsu 3V Input 1.5 V 1.5 V 3V Data Input 1.5 V 0V VOLTAGE WAVEFORMS SETUP AND HOLD TIMES 3V 1.5 V 1.5 V 0V 1.5 V 1.
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PACKAGE OPTION ADDENDUM www.ti.com 25-Sep-2013 (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device.
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device SN74ABTH18502APMR Package Package Pins Type Drawing LQFP PM 64 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 1000 330.0 24.4 Pack Materials-Page 1 13.0 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 13.0 2.1 16.0 24.
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74ABTH18502APMR LQFP PM 64 1000 367.0 367.0 45.
MECHANICAL DATA MTQF008A – JANUARY 1995 – REVISED DECEMBER 1996 PM (S-PQFP-G64) PLASTIC QUAD FLATPACK 0,27 0,17 0,50 0,08 M 33 48 49 32 64 17 0,13 NOM 1 16 7,50 TYP Gage Plane 10,20 SQ 9,80 12,20 SQ 11,80 0,25 0,05 MIN 0°– 7° 0,75 0,45 1,45 1,35 Seating Plane 0,08 1,60 MAX 4040152 / C 11/96 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice.
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