PI74LCX16501(1997) Просмотр технического описания (PDF) - Pericom Semiconductor
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PI74LCX16501 Datasheet PDF : 5 Pages
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PI74LCX16501
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Product Pin Description
Pin Name
OEAB
OEBA
LEAB
LEBA
CLKAB
CLKBA
Ax
Bx
GND
VCC
Description
A-to-B Output Enable Input
B-to-A Output Enable Input (Active LOW)
A-to-B Latch Enable Input
B-to-A Latch Enable Input
A-to-B Clock Input
B-to-A Clock Input
A-to-B Data Inputs or B-to-A 3-State Outputs
B-to-A Data Inputs or A-to-B 3-State Outputs
Ground
Power
Product Pin Configuration
OEAB 1
LEAB 2
A0 3
GND 4
A1 5
A2 6
VCC 7
A3 8
A4 9
A5 10
GND 11
A6 12
A7 13
A8 14
A9 15
A10 16
A11 17
GND 18
A12 19
A13 20
A14 21
VCC 22
A15 23
A16 24
GND 25
A17 26
OEBA 27
LEBA 28
56
55
54
53
52
51
50
49
48
47
46
56-PIN 45
V56 44
A56 43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
GND
CLKAB
B0
GND
B1
B2
VCC
B3
B4
B5
GND
B6
B7
B8
B9
B10
B11
GND
B12
B13
B14
VCC
B15
B16
GND
B17
CLKBA
GND
Truth Table(1)
Inputs
OEAB LEAB CLKAB Ax
L
X
X
X
H
H
X
L
H
H
X
H
H
L
↑
L
H
L
↑
H
H
L
H
X
H
L
L
X
Outputs
Bx
Z
L
H
L
H
B(2)
B(3)
Notes:
1. A-to-B data flow is shown. B-to-A data flow is similar
but uses OEBA, LEBA, and CLKBA.
2. Output level before the indicated steady-state input
conditions were established, provided that CLKAB was
HIGH before LEAB went LOW.
3. Output level before the indicated steady-state input
conditions were established.
4. H = High Voltage Level
L = Low Voltage Level
Z = High Impedance
↑ = LOW-to-HIGH Transition
2
PS2091A 02/11/97
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