PI5C3244 Datasheet, PDF (1/5 Pages) Pericom Semiconductor Corporation – 8-Bit, 2-Port Switch

PI5C3244
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8-Bit, 2-Port Switch
Features:
• Near-Zero propagation delay
• 5-ohm switches connect inputs to outputs when enabled
• Direct bus connection when switches are ON
• Ultra Low Quiescent Power (0.2µA Typical)
– Ideally suited for notebook applications
• Pin compatible with 74 Series 244 logic devices
• Packaging (Pb-free & Green available):
– 20-pin 173-mil wide plastic TSSOP (L)
– 20-pin 150-mil wide plastic QSOP (Q)
– 20-pin 300-mil wide plastic SOIC (S)
Description:
Pericom Semiconductor’s 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.
Block Diagram
BE1
1A0
1B0
1A1
1B1
1A2
1B2
1A3
1B3
BE2
2A0
2B0
2A1
2B1
2A2
2B2
2A3
2B3
Truth Table⁽¹⁾
BE1
BE2
H
H
L
H
H
L
L
L
1A, 1B
Disconnect
1A = 1B
Disconnect
1A = 1B
Note: 1. H = High Voltage Level
L = Low Voltage Level
2A, 2B
Disconnect
Disconnect
2A = 2B
2A = 2B
Pin Configuration
BE1 1
1A0 2
2B3 3
1A1 4
2B2 5
1A2 6
2B1 7
1A3 8
2B0 9
GND 10
20 VCC
19 BE2
18 1B0
17 2A3
16 1B1
15 2A2
14 1B2
13 2A1
12 1B3
11 2A0
Pin Description
Pin Name
BEn
A0-A3
B0-B3
GND
VCC
Description
Bus Output Enable (Active LOW)
Bus A
Bus B
Ground
Power
1
PS7014C 09/2804