PI74FCT162652T Просмотр технического описания (PDF) - Pericom Semiconductor
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Компоненты Описание
производитель
PI74FCT162652T Datasheet PDF : 6 Pages
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PI74FCT16652/162652T
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Truth Table
Function/Operation
Isolation
Store A and B Data
Store A, Hold B
Store A in Both Registers
Hold A, Store B
Store B in Both Registers
Real Time B Data to A Bus
Stored B Data to A Bus
Real Time A Data to B Bus
Stored A Data to B Bus
Stored A Data to B Bus and
Stored B Data to A Bus
xOEAB
L
L
X
H
L
L
L
L
H
H
H
XOEBA
H
H
H
H
X
L
L
L
H
H
L
Inputs
XCLKAB XCLKBA
H or L
↑
H or L
↑
↑
H or L
↑
↑
H or L
↑
↑
↑
X
X
X
H or L
X
X
H or L
X
H or L
H or L
XSAB
X
X
X
X(2)
X
X
X
X
L
H
H
XSBA
X
X
X
X
X
X(2)
L
H
X
X
H
DATA I/O(2)
XAX
XBX
Input
Input
Input Unspecified(1)
Input Output
Unspecified(1) Input
Output Input
Output Input
Input
Output
Output Output
1. The data output functions may be enabled or disabled by various signals at the xOEAB or xOEBA inputs. Data
input functions are always enabled, i.e., data at the bus pins will be stored on every low-to-high transition
on the clock inputs.
2. Select control = L: clocks can occur simultaneously.
Select control = H: clocks must be staggered in order to load both registers.
H = High Voltage Level; L = Low Voltage Level; X = Don’t Care; ↑ = LOW-to-HIGH transition
Product Pin Configuration
Product Pin Description
1OEAB
1CLKAB
1SAB
GND
1A0
1A1
VCC
1A2
1A3
1A4
GND
1A5
1A6
1A7
2A0
2A1
2A2
GND
2A3
2A4
2A5
VCC
2A6
2A7
GND
2SAB
2CLKAB
2OEAB
1
56
2
55
3
54
4
53
5
52
6
51
7
50
8
49
9
48
10
47
11
46
12 56-PIN 45
13 V56 44
14 A56 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
1SBA
GND
1B0
1B1
VCC
1B2
1B3
1B4
GND
1B5
1B6
1B7
2B0
2B1
2B2
GND
2B3
2B4
2B5
VCC
2B6
2B7
GND
2SBA
2CLKBA
2OEBA
Pin Name
xAx
xBx
xCLKAB, xCLKBA
SAB, SBA
xOEAB, xOEBA
GND
VCC
Description
Data Register A Inputs
Data Register B Outputs
Data Register B Inputs
Data Register A Outputs
Clock Pulse Inputs
Output Data Source Select Inputs
Output Enable Inputs
Ground
Power
2
PS2079A 01/15/95
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