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SN54ABTR2245, SN74ABTR2245

OCTAL TRANSCEIVERS AND LINE/MEMORY DRIVERS

WITH 3-STATE OUTPUTS

SCBS680A – MARCH 1997 – REVISED MAY 1997

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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

High-Impedance State During Power Up

and Power Down

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

Package Options Include Plastic

Small-Outline (DW), Shrink Small-Outline

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

Thin Very Small-Outline (DGV) Packages,

Ceramic Chip Carriers (FK), and Plastic (N)

and Ceramic (J) DIPs

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.

Both the A-port and 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 capability of the driver.

The SN54ABTR2245 is characterized for operation over the full military temperature range of –55°C to 125°C.

The SN74ABTR2245 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

SN54ABTR2245 ...J PACKAGE

SN74ABTR2245 . . . DB, DGV, DW, N, OR PW PACKAGE

(TOP VIEW)

3212019

10 11 12 13

DIR

B6 OE

GND

SN54ABTR2245 . . . FK PACKAGE

(TOP VIEW)

DIR

GND

EPIC-ΙΙB is a trademark of Texas Instruments Incorporated.

UNLESS OTHERWISE NOTED this document contains PRODUCTION

DATA information 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.

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.

Summary of content (10 pages)

PAGE 1
SN54ABTR2245, SN74ABTR2245 OCTAL TRANSCEIVERS AND LINE/MEMORY DRIVERS WITH 3-STATE OUTPUTS SCBS680A – MARCH 1997 – REVISED MAY 1997 D D D D D SN54ABTR2245 . . . J PACKAGE SN74ABTR2245 . . . DB, DGV, DW, N, OR PW PACKAGE (TOP VIEW) 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 SN54ABTR2245 . . .
PAGE 2
SN54ABTR2245, SN74ABTR2245 OCTAL TRANSCEIVERS AND LINE/MEMORY DRIVERS WITH 3-STATE OUTPUTS SCBS680A – MARCH 1997 – 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
SN54ABTR2245, SN74ABTR2245 OCTAL TRANSCEIVERS AND LINE/MEMORY DRIVERS WITH 3-STATE OUTPUTS SCBS680A – MARCH 1997 – REVISED MAY 1997 output schematic VCC 25 Ω Output 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
SN54ABTR2245, SN74ABTR2245 OCTAL TRANSCEIVERS AND LINE/MEMORY DRIVERS WITH 3-STATE OUTPUTS SCBS680A – MARCH 1997 – REVISED MAY 1997 recommended operating conditions (see Note 3) SN54ABTR2245 MIN MAX 4.5 5.5 4.5 5.5 Supply voltage VIL VI Low-level input voltage IOH IOL High-level output current ∆t /∆v Input transition rise or fall rate ∆t/∆VCC TA Power-up ramp rate 200 Operating free-air temperature –55 2 2 0.
PAGE 5
SN54ABTR2245, SN74ABTR2245 OCTAL TRANSCEIVERS AND LINE/MEMORY DRIVERS WITH 3-STATE OUTPUTS SCBS680A – MARCH 1997 – REVISED MAY 1997 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOH TEST CONDITIONS VCC = 4.5 V, VCC = 4.5 V, II = –18 mA IOH = –1 mA VCC = 5 V, VCC = 4 4.5 5V VOL VCC = 4 4.5 5V MIN SN54ABTR2245 MIN –1.2 MAX SN74ABTR2245 MIN –1.2 MAX –1.2 3.35 3.3 3.35 IOH = –1 mA IOH = –3 mA 3.85 3.8 3.85 3 3.
PAGE 6
SN54ABTR2245, SN74ABTR2245 OCTAL TRANSCEIVERS AND LINE/MEMORY DRIVERS WITH 3-STATE OUTPUTS SCBS680A – MARCH 1997 – 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 or B B or A tPZH tPZL OE A or B tPHZ tPLZ OE A or B PARAMETER VCC = 5 V, TA = 25°C SN54ABTR2245 MIN TYP MAX MIN MAX MIN MAX 1 2.5 3.4 1 4 1 3.8 1 3.2 4.
PAGE 7
SN54ABTR2245, SN74ABTR2245 OCTAL TRANSCEIVERS AND LINE/MEMORY DRIVERS WITH 3-STATE OUTPUTS SCBS680A – MARCH 1997 – REVISED MAY 1997 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 Timing Input 1.5 V 0V tw tsu 3V Input 1.5 V th 3V 1.5 V Data Input 1.5 V 1.5 V 0V 0V VOLTAGE WAVEFORMS PULSE DURATION VOLTAGE WAVEFORMS SETUP AND HOLD TIMES 3V 1.
PAGE 8
PACKAGE MATERIALS INFORMATION www.ti.com 12-Aug-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 SN74ABTR2245DWR SOIC DW 20 2000 330.0 24.4 10.8 13.3 2.7 12.0 24.0 Q1 SN74ABTR2245PWR TSSOP PW 20 2000 330.0 16.4 6.95 7.1 1.6 8.0 16.
PAGE 9
PACKAGE MATERIALS INFORMATION www.ti.com 12-Aug-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74ABTR2245DWR SOIC DW 20 2000 367.0 367.0 45.0 SN74ABTR2245PWR TSSOP PW 20 2000 367.0 367.0 38.
PAGE 10
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