參數(shù)資料
型號: 933713600653
廠商: NXP SEMICONDUCTORS
元件分類: 總線收發(fā)器
英文描述: HC/UH SERIES, OCTAL 1-BIT TRANSCEIVER, INVERTED OUTPUT, PDSO20
封裝: PLASTIC, SO-20
文件頁數(shù): 3/6頁
文件大小: 46K
代理商: 933713600653
March 1988
3
Philips Semiconductors
Product specication
Octal bus transceiver; 3-state; inverting
74HC/HCT640
PIN DESCRIPTION
PIN NO.
SYMBOL
NAME AND FUNCTION
1
DIR
direction control
2, 3, 4, 5, 6, 7, 8, 9
A0 to A7
data inputs/outputs
10
GND
ground (0 V)
18, 17, 16, 15, 14, 13, 12, 11 B0 to B7
data inputs/outputs
19
OE
output enable input (active LOW)
20
VCC
positive supply voltage
Fig.1 Pin configuration.
Fig.2 Logic symbol.
Fig.3 IEC logic symbol.
Fig.4 Functional diagram.
FUNCTION TABLE
Note
1. H = HIGH voltage level
L = LOW voltage level
X = don’t care
Z = high impedance OFF-state
inputs
inputs/outputs
OE
DIR
An
Bn
L
H
L
H
X
A=B
inputs
Z
inputs
B=A
Z
相關PDF資料
PDF描述
935190200112 HC/UH SERIES, OCTAL 1-BIT TRANSCEIVER, INVERTED OUTPUT, PDSO20
935190200118 HC/UH SERIES, OCTAL 1-BIT TRANSCEIVER, INVERTED OUTPUT, PDSO20
933836100005 HCT SERIES, OCTAL 1-BIT TRANSCEIVER, INVERTED OUTPUT, UUC
933670960652 HCT SERIES, 8-BIT TRANSCEIVER, INVERTED OUTPUT, PDIP20
935190190112 HCT SERIES, OCTAL 1-BIT TRANSCEIVER, INVERTED OUTPUT, PDSO20
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