Rev.4.00, Jul.16.2004, page 1 of 8

HD74BC245A

Octal Bus Transceivers With 3 State Outputs

REJ03D0282–0400Z

(Previous ADE-205-008B (Z))

Rev.4.00

Jul.16.2004

Description

The HD74BC245A provides high drivability and operation equal to or better than high speed bipolar standard logic IC

by using Bi-CMOS process. The device features low power dissipation that is about 1/5 of high speed bipolar logic IC,

when the frequency is 10 MHz. The device has ten buffers with three state outputs in a 20 pin package. Each device

has an active low enable input

G and a direction control input DiR. When DiR is high, data flows from the A inputs to

the B outputs. When DiR is low, data flows from the B inputs to the A outputs. When G is high, disables both A and B

ports by placing then in a high impedance.

Features

• Input/Output are at high impedance state when power supply is off.

• Built in input pull up circuit can make input pins be open, when not used.

• TTL level input

• Wide operating temperature range

Ta = –40 to + 85°C

• Ordering Information

Part Name

Package Type

Package Code

Package

Abbreviation

Taping Abbreviation

(Quantity)

HD74BC245AP

DILP-20 pin

DP-20N, -20NEV

P

—

HD74BC245AFPEL

SOP-20 pin (JEITA) FP-20DAV

FP

EL (2,000 pcs/reel)

HD74BC245ATELL

TSSOP-20 pin

TTP-20DAV

T

ELL (2,000 pcs/reel)

Note:

Please consults the sales office for the above package availability.

Function Table

Control Inputs

G

G

G

G

DiR

Operation

L

L

B data to A bus

L

H

A data to B bus

HX

Z

H :

High level

L

:

Low level

Z

:

High impedance