74F604 Просмотр технического описания (PDF) - Philips Electronics
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74F604 Datasheet PDF : 7 Pages
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Philips Semiconductors
Dual octal latch (3-State)
Product specification
74F604
LOGIC SYMBOL
3 4 5 6 7 8 9 10 27 26 25 24 23 22 21 20
A0 B0 A1 B1 A2 B2 A3 B3 A4 B4 A5 B5 A6 B6 A7 B7
1
LE
2
SELECT A/B
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
VCC = Pin 28
GND = Pin 14
15 13 12 11 16 17 18 19
SF01116
IEC/IEEE SYMBOL (IEEE/IEC)
2
G2
1
E1
EN
3
1D 2
≥1
4
1D 2
5
6
7
8
9
10
27
26
25
24
23
22
21
20
FUNCTION TABLE
INPUTS
A0–A7 B0–B7 SELECT A/B
A data B data
L
A data B data
H
X
X
X
X
X
L
X
X
H
H = High voltage level
L = Low voltage level
X = Don’t care
Z = High impedance “off” state
↑ = Low-to-High clock transition
OUTPUTS
LE
Q0–Q7
↑
B data
↑
B data
L
Z
H B latched data
H A latched data
15
13
12
11
16
17
18
19
SF01117
1990 Mar 01
2
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