PI74FCT162952T Просмотр технического описания (PDF) - Pericom Semiconductor
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производитель
PI74FCT162952T Datasheet PDF : 7 Pages
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PI74FCT16952T/162952/162H952T
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Product Pin Configuration
1OEAB
1CLKAB
1CEAB
GND
1A0
1A1
VCC
1A2
1A3
1A4
GND
1A5
1A6
1A7
2A0
2A1
2A2
GND
2A3
2A4
2A5
VCC
2A6
2A7
GND
2CEAB
2CLKAB
2OEAB
1
56
2
55
3
54
4
53
5
52
6
51
7
50
8
49
9
48
10
47
11 56-PIN 46
12 V56 45
13 A56 44
14
43
15
42
16
41
17
40
18
39
19
38
20
37
21
36
22
35
23
34
24
33
25
32
26
31
27
30
28
29
1OEBA
1CLKBA
1CEBA
GND
1B0
1B1
VCC
1B2
1B3
1B4
GND
1B5
1B6
1B7
2B0
2B1
2B2
GND
2B3
2B4
2B5
VCC
2B6
2B7
GND
2CEBA
2CLKBA
2OEBA
Product Pin Description
Pin Name
Description
xOEAB
A-to-B Output Enable Input (Active LOW)
xOEBA
B-to-A Output Enable Input (Active LOW)
xCEAB
A-to-B Clock Enable Input (Active LOW)
xCEBA
B-to-A Clock Enable Input (Active LOW)
xCLKAB
A-to-B Clock Input
xCLKBA
B-to-A clock Input
xAx
A-to-B Data Inputs or B-to-A 3-State
Outputs (1)
xBx
B-to-A Data Inputs or B-to-A 3-State
Outputs (1)
GND
Ground
VCC
Power
Note: 1. For the PI74FCT162H952T, these pins have “Bus
Hold”. All other pins are standard, outputs, or I/Os.
Truth Table(1,2)
Inputs
xCEAB xCLKAB xOEAB
xAx
H
X
L
X
X
L
L
X
L
↑
L
L
L
↑
L
H
X
X
H
X
1. H = High Voltage Level
L = Low Voltage Level
X = Don’t Care or Irrelevant
↑ = LOW-to-HIGH Transition
Z = High Impedance
2. A-to-B data flow shown, B-to-A flow control
is the same, except using xCEBA, xCLKBA,
and xOEBA.
3. Level of B before the indicated steady-state
input conditions were established.
Outputs
xBx
B(3)
B(3)
L
H
High Z
2
PS2042A 03/11/96
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