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74HC640D Scheda tecnica(PDF) 3 Page - NXP Semiconductors

Il numero della parte 74HC640D
Spiegazioni elettronici  Octal bus transceiver; 3-state; inverting
PDF  6 Pages
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Produttore elettronici  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74HC640D Scheda tecnica(HTML) 3 Page - NXP Semiconductors

  74HC640D Datasheet HTML 1Page - NXP Semiconductors 74HC640D Datasheet HTML 2Page - NXP Semiconductors 74HC640D Datasheet HTML 3Page - NXP Semiconductors 74HC640D Datasheet HTML 4Page - NXP Semiconductors 74HC640D Datasheet HTML 5Page - NXP Semiconductors 74HC640D Datasheet HTML 6Page - NXP Semiconductors  
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March 1988
3
Philips Semiconductors
Product specification
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
L
H
L
H
X
A=B
inputs
Z
inputs
B=A
Z



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