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參數(shù)資料
| 型號： | HD74BC645AT |
| 元件分類： | 通用總線功能 |
| 英文描述： | BUS TRANSCEIVER|SINGLE|8-BIT|BICMOS-TTL|TSSOP|20PIN|PLASTIC |
| 中文描述： | 總線收發(fā)器|單| 8位|的BiCMOS - TTL電| TSSOP封裝| 20針|塑料 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大小： | 61K |
| 代理商： | HD74BC645AT |
HD74BC240A
Octal Buffers/Line Drivers With 3 State Outputs
ADE-205-006A (Z)
2nd. Edition
Mar. 1993
Description
The HD74BC240A 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 inverter drivers with
three state outputs in a 20 pin package. This device is a non inverting buffer and has two active low
enables (1
G
and 2
G
). Each enable independently controls 4 buffers.
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
Function Table
Inputs
G
A
Output
Y
H
X
Z
L
H
L
L
H :
L
X :
Z
L
H
High level
Low level
Immaterial
High impedance
:
:
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