PI5C3257QE Datasheet, PDF (1/6 Pages) Pericom Semiconductor Corporation – Quad 2:1 Mux/DeMux Bus Switch

Features:
• Near-Zero propagation delay
• 5Ω switches connect inputs to outputs
•  Direct bus connection when switches are ON
•  Ultra Low Quiescent Power (0.2µA typical)
– Ideally suited for notebook applications
•  Pin compatible with 74 series 257 logic devices
• Packaging (Pb-free & Green available):
– 16-pin 150-mil wide plastic QSOP (Q)
– 16-pin 150-mil wide plastic SOIC (W)
– 16-pin 173-mil wide plasticTSSOP (L)
PI5C3257
Quad 2:1 Mux/DeMux Bus Switch
Description
Pericom Semiconductor’s PI5C3257 is a Quad 2:1 multiplexer/
demultiplexer with three-state outputs that is pinout and function
compatible with the PI74FCT257T, 74F257, and 74ALS/AS/LS257.
Inputs can be connected to outputs with low On-Resistance (5Ω)
with no additional ground bounce noise or propagation delay.
Block Diagram
Pin Configuration
IA0 IA1 IB0 IB1 IC0 IC1 ID0 ID1
E
S
YA
YB
YC
YD
S1
IA0 2
IA1 3
YA 4
IB0 5
IB1 6
YB 7
GND 8
16 VCC
15 E
14 ID0
13 ID1
12 YD
11 IC0
10 IC1
9
YC
Truth Table⁽¹⁾
E S YA YB YC YD
Function
H X Hi-Z Hi-Z Hi-Z Hi-Z
Disable
L L IA0 IB0 IC0 ID0
S=0
L H IA1 IB1 IC1 ID1
S=1
Note:
1. H = High Voltage Level, L = Low Voltage Level
Pin Description
Pin Name
Description
IAn-IDn Data Inputs
S
Select Inputs
E
Enable
YA-YD
Data Outputs
GND
Ground
V_cc
Power
13-0015
1
01/14/13