PI3B3257 Datasheet, PDF (1/5 Pages) Pericom Semiconductor Corporation – 3.3V, Quad 2:1 Mux/Demux Bus Switch

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3.3V, Quad 2:1
Mux/Demux Bus Switch
Product Features
• Near zero propagation delay
• 5-ohm switches connect inputs to outputs
• Fast Switching Speed: 4.8ns max.
• Ultra-Low Quiescent Power: 0.1µA typical
– Ideally suited for notebook applications
• Pin compatible with 74 series 257 logic devices
• Packages available:
– 16-pin 150 mil wide plastic QSOP (Q)
– 16-pin 150 mil wide plastic SOIC (W)
– 16-pin 173 mil wide plastic TSSOP (L)
Product Description
Pericom Semiconductor’s PI3B series of logic circuits are produced
using the Company’s advanced submicron CMOS technology,
achieving industry leading performance.
The PI3B3257 is a 3.3 Volt, 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 (5 ohms) with no
additional ground bounce noise or propagation delay.
Logic Block Diagram
16-Pin Product Configuration
IA0 IA1 IB0 IB1 IC0 IC1 ID0 ID1
E
S
S1
16
VCC
IA0 2
15
E
IA1 3
14
ID0
YA
4
16-Pin
Q, W, L
13
ID1
IB0
5
12
YD
IB1
6
11
IC0
YB
7
10
IC1
GND 8
9
YC
YA
YB
YC
YD
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
Product Pin Description
Pin Name
IAn-IDn
S
E
YA-YD
GND
Vcc
NC
1
Description
Data Inputs
Select Inputs
Enable
Data Outputs
Ground
Power
No Connect
PS8151F 05/07/01