Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLogic ICsLogic IC - Receiver, transceiver SOIC 20

SN54HC245, SN74HC245

OCTAL BUS TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCLS131D − DECEMBER 1982 − REVISED AUGUST 2003

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D Wide Operating Voltage Range of 2 V to 6 V

D High-Current 3-State Outputs Drive Bus

Lines Directly or Up To 15 LSTTL Loads

D Low Power Consumption, 80-μA Max I

D Typical t

= 12 ns

D ±6-mA Output Drive at 5 V

D Low Input Current of 1 μA Max

3212019

910111213

DIR

GND

SN54HC245 ...FK PACKAGE

(TOP VIEW)

DIR

GND

SN54HC245 ...J OR W PACKAGE

SN74HC245 . . . DB, DW, N, NS, OR PW PACKAGE

(TOP VIEW)

description/ordering information

These octal bus transceivers are designed for asynchronous two-way communication between data buses. The

control-function implementation minimizes external timing requirements.

The devices allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending on

the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the

device so that the buses are effectively isolated.

ORDERING INFORMATION

PACKAGE

†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP − N Tube of 20 SN74HC245N SN74HC245N

SOIC DW

Tube of 25 SN74HC245DW

HC245

SOIC − DW

Reel of 2000 SN74HC245DWR

HC245

40°Cto85°C

SOP − NS Reel of 2000 SN74HC245NSR HC245

−40°C to 85°C

SSOP − DB Reel of 2000 SN74HC245DBR HC245

Tube of 70 SN74HC245PW

TSSOP − PW

Reel of 2000 SN74HC245PWR

HC245

TSSOP

Reel of 250 SN74HC245PWT

HC245

CDIP − J Tube of 20 SNJ54HC245J SNJ54HC245J

−55°C to 125°C

CFP − W Tube of 85 SNJ54HC245W SNJ54HC245W

LCCC − FK Tube of 55 SNJ54HC245FK SNJ54HC245FK

†

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are

available at www.ti.com/sc/package.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

On products compliant to MIL-PRF-38535, all parameters are tested

unless otherwise noted. On all other products, production

processing does not necessarily include testing of all parameters.

Summary of content (22 pages)

PAGE 1
SN54HC245, SN74HC245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCLS131D − DECEMBER 1982 − REVISED AUGUST 2003 D Wide Operating Voltage Range of 2 V to 6 V D High-Current 3-State Outputs Drive Bus Lines Directly or Up To 15 LSTTL Loads D Low Power Consumption, 80-μA Max ICC D Typical tpd = 12 ns D ±6-mA Output Drive at 5 V D Low Input Current of 1 μA Max SN54HC245 . . . J OR W PACKAGE SN74HC245 . . .
PAGE 2
SN54HC245, SN74HC245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCLS131D − DECEMBER 1982 − REVISED AUGUST 2003 FUNCTION TABLE INPUTS OE DIR OPERATION L L B data to A bus L H A data to B bus H X Isolation logic diagram (positive logic) DIR 1 19 A1 OE 2 18 B1 To Seven Other Channels absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE 3
SN54HC245, SN74HC245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCLS131D − DECEMBER 1982 − REVISED AUGUST 2003 recommended operating conditions (see Note 3) SN54HC245 VCC Supply voltage VCC = 2 V VIH VCC = 4.5 V High-level High level input voltage VCC = 6 V MIN NOM MAX 2 5 6 Input voltage VO Output voltage TA 5 6 3.15 4.2 0 0 Input transition rise/fall time 2 4.2 VCC = 2 V Δt/Δv MAX 3.15 VCC = 6 V VI NOM 1.5 VCC = 4.5 V Low-level Low level input voltage MIN 1.
PAGE 4
SN54HC245, SN74HC245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCLS131D − DECEMBER 1982 − REVISED AUGUST 2003 switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) PARAMETER tpd ten FROM (INPUT) TO (OUTPUT) VCC A or B B or A OE tdis OE tt A or B A or B A or B TA = 25°C MIN SN54HC245 MIN MAX SN74HC245 TYP MAX MIN MAX 2V 40 105 160 130 4.
PAGE 5
SN54HC245, SN74HC245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCLS131D − DECEMBER 1982 − REVISED AUGUST 2003 PARAMETER MEASUREMENT INFORMATION VCC PARAMETER Test Point From Output Under Test S1 ten RL CL (see Note A) RL tPZH tdis S2 1 kΩ tPZL tPHZ tPLZ 1 kΩ tpd or tt −− Output Control (Low-Level Enabling) 50% LOAD CIRCUIT CL S1 S2 50 pF or 150 pF Open Closed Closed Open Open Closed Closed Open Open Open 50 pF 50 pF or 150 pF VCC Input 50% 50% 0V tPLH In-Phase Output 50
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 18-Oct-2013 Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties.
PAGE 10
PACKAGE MATERIALS INFORMATION www.ti.com 9-Sep-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant SN74HC245DBR SSOP DB 20 2000 330.0 16.4 8.2 7.5 2.5 12.0 16.0 Q1 SN74HC245DWR SOIC DW 20 2000 330.0 24.4 10.8 13.3 2.7 12.0 24.0 Q1 SN74HC245NSR SO NS 20 2000 330.0 24.4 8.2 13.0 2.5 12.0 24.
PAGE 11
PACKAGE MATERIALS INFORMATION www.ti.com 9-Sep-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74HC245DBR SN74HC245DWR SSOP DB 20 2000 367.0 367.0 38.0 SOIC DW 20 2000 367.0 367.0 45.0 SN74HC245NSR SO NS 20 2000 367.0 367.0 45.0 SN74HC245PWR TSSOP PW 20 2000 364.0 364.0 27.0 SN74HC245PWT TSSOP PW 20 250 367.0 367.0 38.
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MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,22 0,65 28 0,15 M 15 0,25 0,09 8,20 7,40 5,60 5,00 Gage Plane 1 14 0,25 A 0°–ā8° 0,95 0,55 Seating Plane 2,00 MAX 0,10 0,05 MIN PINS ** 14 16 20 24 28 30 38 A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30 DIM 4040065 /E 12/01 NOTES: A. B. C. D. All linear dimensions are in millimeters.
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