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74ABT2245

Octal transceiver with direction pin and 30 Ω series termination resistors (3-State)

NXP Semiconductors. 

Philips Semiconductors

Octal transceiver with direction pin and

30 Ω series termination resistors (3-State)

Product data

74ABT2245

FEATURES

• Octal bidirectional bus interface

• 3-State buffers

• Output capability: +12 mA / –32 mA

• Latch-up protection exceeds 500 mA per Jedec Std 17

• ESD protection exceeds 2000 V per MIL STD 833 Method 3015

and 200 V per Machine Model

• Power-up 3-State

• Live insertion/extraction permitted

• Same as 74ABT245-1

• Outputs include series resistance of 30 Ω, making external

termination resistors unnecessary

• Inputs are disabled during 3-State mode

DESCRIPTION

The 74ABT2245 high-performance BiCMOS device combines low

static and dynamic power dissipation with high speed.

The 74ABT2245 device is an octal transceiver featuring

non-inverting 3-State bus compatible outputs in both send and

receive directions. The control function implementation minimizes

external timing requirements. The device features an Output Enable

(OE) input for easy cascading and a Direction (DIR) input for

direction control.

The 74ABT2245 is designed with 30 Ω series resistance in both the

HIGH and LOW states of the output. This design reduces line noise

in applications such as memory address drivers, clock drivers, and

bus receivers/transmitters.

The 74ABT2245 is the same as the 74ABT245-1. The part number

has been changed to reflect industry standards.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

tPLH

tPHL

CIN

CI/O

ICCZ

Propagation delay

An to Bn or Bn to An

Input capacitance DIR, OE

I/O pin capacitance

Total supply current

CONDITIONS

Tamb = 25 °C; GND = 0 V

CL = 50 pF; VCC = 5 V

VI = 0 V or VCC

Outputs disabled; VO = 0 V or VCC

Outputs disabled; VCC = 5.5 V

TYPICAL

3.9

4

7

50

UNIT

ns

pF

pF

µA

ORDERING INFORMATION

PACKAGES

20-Pin plastic SO

20-Pin Plastic SSOP Type II

20-Pin Plastic TSSOP Type I

TEMPERATURE RANGE

–40 °C to +85 °C

–40 °C to +85 °C

–40 °C to +85 °C

PART NUMBER

74ABT2245D

74ABT2245DB

74ABT2245PW

DWG NUMBER

SOT163-1

SOT339-1

SOT360-1

PIN CONFIGURATION

DIR 1

A0 2

A1 3

A2 4

A3 5

A4 6

A5 7

A6 8

A7 9

GND 10

20 VCC

19 OE

18 B0

17 B1

16 B2

15 B3

14 B4

13 B5

12 B6

11 B7

SA00121

PIN DESCRIPTION

PIN NUMBER

SYMBOL

1

DIR

2, 3, 4, 5, 6, 7, 8, 9 A0 – A7

18, 17, 16, 15, 14,

13, 12, 11

B0 – B7

19

OE

10

GND

20

VCC

NAME AND FUNCTION

Direction control input

Data inputs/outputs (A side)

Data inputs/outputs (B side)

Output enable input

(active-LOW)

Ground (0 V)

Positive supply voltage

2002 Dec 17

2

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