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HD74BC640ARP

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HD74BC640ARP 数据手册

HD74BC640A

Octal Bus Transceivers With 3 State Outputs

ADE-205-026 (Z)

1st. Edition

Feb. 1994

Description

The HD74BC640A 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 eight bus transceivers 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 high,

data flows from the B inputs to the A outputs. When enable inputs (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.

Input pins can be open, when not used, owing to built in input pull up circuit.

Input is TTL level.

Wide operating temperature range

Ta = –40 to +85°C.

Function Table

Control Inputs

DIR

Operation

B data to A bus

A data to B bus

Isolation

H :

High level

Low level

Immaterial

12 3 4 5 6 7...10

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型号	品牌	获取价格	描述	数据表
HD74BC640ARP-EL	RENESAS	获取价格	BCT/FBT SERIES, 8-BIT TRANSCEIVER, INVERTED OUTPUT, PDSO20, FP-20DB
HD74BC640ASS	HITACHI	获取价格	Bus Transceiver, BCT/FBT Series, 1-Func, 8-Bit, PDSO20
HD74BC640AT	HITACHI	获取价格	Bus Transceiver, BCT/FBT Series, 1-Func, 8-Bit, Inverted Output, BICMOS, PDSO20, TTP-20DA
HD74BC640AT-EL	RENESAS	获取价格	BCT/FBT SERIES, 8-BIT TRANSCEIVER, INVERTED OUTPUT, PDSO20
HD74BC640AT-ELL	HITACHI	获取价格	Bus Transceiver, BCT/FBT Series, 1-Func, 8-Bit, Inverted Output, BICMOS, PDSO20, TTP-20DA
HD74BC640AT-ELL	RENESAS	获取价格	Bus Transceiver, BCT/FBT Series, 1-Func, 8-Bit, Inverted Output, BICMOS, PDSO20, TTP-20DA
HD74BC645A	RENESAS	获取价格	Octal Bus Transceivers With 3 State Outputs
HD74BC645A	HITACHI	获取价格	Octal Bus Transceivers With 3 State Outputs
HD74BC645AFP	ETC	获取价格	BUS TRANSCEIVER\|SINGLE\|8-BIT\|BICMOS-TTL\|SOP\|20PIN\|PLASTIC
HD74BC645AFP-E	RENESAS	获取价格	BCT/FBT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, FP-20DA