PI5C3257CL Просмотр технического описания (PDF) - Pericom Semiconductor
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PI5C3257CL Datasheet PDF : 4 Pages
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Quad 2:1 Mux/Demux BusSwitch
with –2V Undershoot Protection
Product Features
• Near zero propagation delay
• 5ohms switches connect inputs to outputs
• Direct bus connection when switches are ON
• Undershoot Protection to –2V (Data Inputs Only)
• Pin compatible with 74 series 257 logic devices
• Packages available:
– 16-pin 150 mil wide plastic QSOP (Q)
– 16-pin 173 mil wide plastic TSSOP (L)
Logic Block Diagram
Product Description
Pericom Semiconductor’s PI5C series of logic circuits are produced
using the Company’s advanced submicron CMOS technology,
achieving industry leading performance.
The PI5C3257C is a Quad 2:1 multiplexer/demultiplexer with three-
state outputs that is pinout and function compatible with the
PI74FCT257T. Inputs can be connected to outputs with low on
resistance (5ohms) with no additional ground bounce noise or
propagation delay.
16-Pin Product Configuration
IA0 IA1 IB0 IB1 IC0 IC1 ID0 ID1
E
S
S1
IA0 2
16
VCC
15 E
IA1 3
14 ID0
YA
4
13
16-Pin
ID1
IB0
5 L,Q 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
Description
IAN-IDN
Data Inputs
S
Select Inputs
E
Enable
YA-YD
Data Outputs
GND
Ground
Vcc
Power
NC
No Connect
1
PS8513 02/21/01
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