Datasheet

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SN54ABT2245, SN74ABT2245

OCTAL TRANSCEIVERS AND LINE/MOS DRIVERS

WITH 3-STATE OUTPUTS

SCBS234D – SEPTEMBER 1992 – REVISED MAY 1997

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

B-Port Outputs Have Equivalent 25-Ω

Series Resistors, So No External Resistors

Are Required

State-of-the-Art

EPIC-

ΙΙ

 BiCMOS Design

Significantly Reduces Power Dissipation

Latch-Up Performance Exceeds 500 mA Per

JEDEC Standard JESD-17

ESD Protection Exceeds 2000 V Per

MIL-STD-833, Method 3015; Exceeds 200 V

Using Machine Model (C = 200 pF, R = 0)

Typical V

OLP

(Output Ground Bounce) < 1 V

at V

= 5 V, T

= 25°C

High-Impedance State During Power Up

and Power Down

Package Options Include Plastic

Small-Outline (DW), Shrink Small-Outline

(DB), and Thin Shrink Small-Outline (PW)

Packages, Ceramic Chip Carriers (FK),

Plastic (N) and Ceramic (J) DIPs, and

Ceramic Flat (W) Package

description

These octal transceivers and line drivers are

designed for asynchronous communication

between data buses. The devices transmit data

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

the buses are effectively isolated.

The B-port outputs, which are designed to sink up to 12 mA, include equivalent 25-Ω series resistors to reduce

overshoot and undershoot.

When V

is between 0 and 2.1 V, the device is in the high-impedance state during power up or power down.

However, to ensure the high-impedance state above 2.1 V, OE

should be tied to V

through a pullup resistor;

the minimum value of the resistor is determined by the current-sinking/current-sourcing capability of the driver.

The SN54ABT2245 is characterized for operation over the full military temperature range of –55°C to 125°C.

The SN74ABT2245 is characterized for operation from –40°C to 85°C.

FUNCTION TABLE

INPUTS

OPERATION

OE DIR

OPERATION

L L B data to A bus

L H A data to B bus

H X Isolation

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.

EPIC-ΙΙB is a trademark of Texas Instruments Incorporated.

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.

SN54ABT2245 ...J OR W PACKAGE

SN74ABT2245 . . . DB, DW, N, OR PW PACKAGE

(TOP VIEW)

32 12019

10 11 12 13

DIR

B6 OE

GND

SN54ABT2245 . . . FK PACKAGE

(TOP VIEW)

DIR

GND

Summary of content (22 pages)

PAGE 1
SN54ABT2245, SN74ABT2245 OCTAL TRANSCEIVERS AND LINE/MOS DRIVERS WITH 3-STATE OUTPUTS SCBS234D – SEPTEMBER 1992 – REVISED MAY 1997 D D D D D DIR A1 A2 A3 A4 A5 A6 A7 A8 GND 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 VCC OE B1 B2 B3 B4 B5 B6 B7 B8 SN54ABT2245 . . .
PAGE 2
SN54ABT2245, SN74ABT2245 OCTAL TRANSCEIVERS AND LINE/MOS DRIVERS WITH 3-STATE OUTPUTS SCBS234D – SEPTEMBER 1992 – REVISED MAY 1997 logic symbol† 19 OE 1 DIR 2 A1 G3 3 EN1 [BA] 3 EN2 [AB] 18 1 B1 2 A2 A3 A4 A5 A6 A7 A8 3 17 4 16 5 15 6 14 7 13 8 12 9 11 B2 B3 B4 B5 B6 B7 B8 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
PAGE 3
SN54ABT2245, SN74ABT2245 OCTAL TRANSCEIVERS AND LINE/MOS DRIVERS WITH 3-STATE OUTPUTS SCBS234D – SEPTEMBER 1992 – REVISED MAY 1997 schematic of A-port outputs schematic of B-port outputs VCC VCC 25 Ω Output Output GND GND All resistor values shown are nominal. absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.
PAGE 4
SN54ABT2245, SN74ABT2245 OCTAL TRANSCEIVERS AND LINE/MOS DRIVERS WITH 3-STATE OUTPUTS SCBS234D – SEPTEMBER 1992 – REVISED MAY 1997 recommended operating conditions (see Note 3) SN54ABT2245 VCC VIH Supply voltage VIL VI Low-level input voltage High-level input voltage MAX MIN MAX 4.5 5.5 4.5 5.5 2 2 0.
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SN54ABT2245, SN74ABT2245 OCTAL TRANSCEIVERS AND LINE/MOS DRIVERS WITH 3-STATE OUTPUTS SCBS234D – SEPTEMBER 1992 – REVISED MAY 1997 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK B port TEST CONDITIONS VCC = 4.5 V, VCC = 4.5 V, II = –18 mA IOH = –1 mA VCC = 5 V, VCC = 4 4.5 5V VOH A port VCC = 4.5 V, VCC = 5 V, 5V VCC = 4 4.5 B port VOL VCC = 4 4.5 5V A port MIN SN54ABT2245 MIN –1.2 MAX SN74ABT2245 MIN –1.2 MAX –1.2 3.
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SN54ABT2245, SN74ABT2245 OCTAL TRANSCEIVERS AND LINE/MOS DRIVERS WITH 3-STATE OUTPUTS SCBS234D – SEPTEMBER 1992 – REVISED MAY 1997 switching characteristics over recommended ranges of supply voltage and operating free-air temperature, CL = 50 pF (unless otherwise noted) (see Figure 1) FROM (INPUT) TO (OUTPUT) tPLH tPHL A B tPLH tPHL B A tPZH tPZL OE A tPHZ tPLZ OE A tPZH tPZL OE B tPHZ tPLZ OE B PARAMETER 6 POST OFFICE BOX 655303 VCC = 5 V, TA = 25°C SN54ABT2245 SN74ABT2245 MIN T
PAGE 7
SN54ABT2245, SN74ABT2245 OCTAL TRANSCEIVERS AND LINE/MOS DRIVERS WITH 3-STATE OUTPUTS SCBS234D – SEPTEMBER 1992 – REVISED MAY 1997 PARAMETER MEASUREMENT INFORMATION 500 Ω From Output Under Test S1 7V Open GND CL = 50 pF (see Note A) 500 Ω TEST S1 tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open 7V Open 3V LOAD CIRCUIT Timing Input 1.5 V 0V tw tsu 3V th 3V 1.5 V Input 1.5 V Data Input 0V 1.5 V 0V VOLTAGE WAVEFORMS SETUP AND HOLD TIMES VOLTAGE WAVEFORMS PULSE DURATION 3V 3V 1.
PAGE 8
PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 25-Sep-2013 Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.
PAGE 11
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-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 SN74ABT2245DBR SSOP DB 20 2000 330.0 16.4 8.2 7.5 2.5 12.0 16.0 Q1 SN74ABT2245DWR SOIC DW 20 2000 330.0 24.4 10.8 13.0 2.7 12.0 24.0 Q1 SN74ABT2245NSR SO NS 20 2000 330.0 24.4 8.2 13.0 2.5 12.0 24.
PAGE 12
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74ABT2245DBR SN74ABT2245DWR SSOP DB 20 2000 367.0 367.0 38.0 SOIC DW 20 2000 367.0 367.0 45.0 SN74ABT2245NSR SO NS 20 2000 367.0 367.0 45.0 SN74ABT2245PWR TSSOP PW 20 2000 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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