PI74FCT16260T Просмотр технического описания (PDF) - Pericom Semiconductor
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PI74FCT16260T Datasheet PDF : 5 Pages
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PI74FCT16260T
PI74FCT162260T 1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122
Fast CMOS 12-Bit Tri-Port Bus Exchanger
Product Pin Description
Product Pin Configuration
Pin Name
OE2B
OE1B
LE1B
LE2B
LEA1B
LEA2B
OEA
SEL
A1
1B1
2B1
GND
VCC
Description
2B Output Enable (Active LOW)
1B Output Enable (Active LOW)
Latch Enable, A-1B
Latch Enable, A21B
Latch Enable Input for 1B-A Latch
Latch Enable Input for 2B-A Latch
Output Enable for A (Active LOW)
1B or 2B Path Selection
A-to-B Data Inputs for B-to-A 3 State Outputs
Bidirectional Data Port 1B
Bidirectional Data Port 2B
Ground
Power
Truth Table(1) A to B (OEA = H)
INPUTS
OUTPUTS
A LEA1B LEA2B OE1B OE2B 1B
2B
H
H
H
L
L
H
H
OEA
LE1B
2B3
GND
2B2
2B1
VCC
A1
A2
A3
GND
A4
A5
A6
A7
A8
A9
GND
A10
A11
A12
VCC
1B1
1B2
GND
1B3
LE2B
SEL
1
56
2
55
3
54
4
53
5
52
6
51
7
50
8
49
9
48
10 56-PIN 47
11 A56 46
12 V56 45
13
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
OE2B
LEA2B
2B4
GND
2B5
2B6
VCC
2B7
2B8
2B9
GND
2B10
2B11
2B12
1B12
1B11
1B10
GND
1B9
1B8
1B7
VCC
1B6
1B5
GND
1B4
LEA1B
OE1B
L
H
H
L
L
L
L
H
H
L
H
H
L
L
L
X
L
X
X
X
X
X
X
X
X
L
L
L
H
2B0(2)
L
L
L
L
2B0(2)
H
L
L
1B0(2)
H
H
L
L
1B0(2)
L
L
L
L
1B0(2) 2B0(2)
X
H
H
Z
Z
X
L
H Active Z
X
H
L
Z Active
X
L
L Active Active
Notes:
1. H = High Signal Level
L=
Low Signal Level
X = Irrelevant
Z = High Impedance
2. Output level before the indicated steady-state
input conditions were established.
Truth Table(1) B to A (OEB = H)
Inputs
1B 2B SEL LE1B LE2B
H
XH
H
X
L
XH
H
X
X XH
L
X
XHL
X
H
XLL
X
H
XXL
X
L
X XX X
X
OEA
L
L
L
L
L
L
H
Output A
H
L
A(2)
H
L
A(2)
Z
2
PS8307A 11/17/98
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