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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C3244
8-Bit, 2-Port BusSwitch
PI5C3244
8-Bit, 2-Port BusSwitch
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Product Features:
聲
聲
聲 Near zero propagation delay
聲 5ohm switches connect inputs to outputs when enabled
Direct bus connection when switches are ON
Ultra Low Quiescent Power (0.2碌A(chǔ) Typical)
聳 Ideally suited for notebook applications
聲 Pin compatible with 74 Series 244 logic devices
聲 Packages available:
聳 20-pin 173 mil wide plastic TSSOP (L)
聳 20-pin 300 mil wide plastic DIP (P)
聳 20-pin 150 mil wide plastic QSOP (Q)
聳 20-pin 300 +mil wide plastic SOIC (S)
Product Description:
Pericom Semiconductor聮s PI5C series of logic circuits are pro-duced
in the Company聮s advanced submicron CMOS technology, achieving
industry leading performance.
The PI5C3244 features a set of eight bus switches which is pinout
and function compatible with the PI74FCT244T, 74F244, and
74ALS/AS/LS 244 8-bit drivers. Two enable signals (BEn) turn the
switches on similar to the enable signals of the 244. The bus switch
creates no additional propagation delay or ground bounce noise.
Logic Block Diagram
BE
1
1A
0
1A
1
1A
2
1A
3
1B
0
1B
1
1B
2
1B
3
Product Pin Configuration
BE
1
1
A
0
2
B
3
1
A
1
2
B
2
1
A
2
2
B
1
1
A
3
2
B
0
GND
1
20
2
19
3
18
4
20-Pin
17
5
L,P,Q,S
16
6
15
7
14
8
13
9
12
10
11
V
CC
BE
2
1
B
0
2
A
3
1
B
1
2
A
2
1
B
2
2
A
1
1
B
3
2
A
0
6
7
8
9
10
11
BE
2
2A
0
2A
1
2A
2
2A
3
2B
0
2B
1
2B
2
2B
3
Product Pin Description
Truth Table
(1)
BE
1
H
L
H
L
BE
2
H
H
L
L
1A, 1B
Disconnect
1A = 1B
Disconnect
1A = 1B
2A, 2B
Disconnect
Disconnect
2A = 2B
2A = 2B
Pin Name
BEn
A
0
-A
3
B
0
-B
3
GND
V
CC
Description
Bus Output Enable (Active LOW)
Bus A
Bus B
Ground
Power
12
13
14
15
Note:
1. H = High Voltage Level
L = Low Voltage Level
1
PS7014A 03/13/96
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