PI5C3253C Datasheet, PDF (1/4 Pages) Pericom Semiconductor Corporation – Dual 4:1 Mux/DeMux Bus Switch with-2V Undershoot Protection

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Dual 4:1 Mux/DeMux Bus Switch
with –2V Undershoot Protection
Features
• Near-Zero propagation delay
• 4-ohm switches connect inputs to outputs
• Direct bus connection when switches are ON
• Undershoot protection to –2V (Data Inputs Only)
• Pin compatible with 74 series 253 logic devices
• Packaging (Pb-free & Green available):
– 16-pin 173-mil wide plastic TSSOP (L)
Description
Pericom Semiconductor’s PI5C3253C is a Dual 4:1 multiplexer/
demultiplexer with three-state outputs that is pinout compatible with
the PI74FCT253T. Inputs can be connected to outputs with low On-
Resistance (5-ohm) with no additional ground bounce noise or
propagation delay.
Block Diagram
IB3
IB2
IB1
IB0
IA3
IA2
IA1
IA0
Pin Configuration
YB
EA 1
16 V_CC
S₁ 2
15 EB
IA₃ 3
14 S₀
IA₂ 4
13 IB₃
YA
IA₁ 5
12 IB₂
IA₀ 6
11 IB1
YA 7
10 IB₀
GND 8
9 YB
EA EB S0 S1
Pin Description
Pin Name
EA, EB
S0-1
1AN,1BN
YA, YB
VCC
GND
Description
Enable
Select Inputs
Data Inputs
Data Outputs
Power Supply Pin
Ground
Truth Table⁽¹⁾
Enable
Select
Channel
EA EB S1 S0 YA YB
Function
H X X X Hi-Z X Disable A
X H X X X Hi-Z Disable B
L L L L IA0 IB0 S1-0 = 0
L L L H IA1 IB1 S1-0 = 1
L L H L IA2 IB2 S1-0 = 2
L L H H IA3 IB3 S1-0 = 2
Note: 1. H = High Logic Voltage Level
L = Low Logic Voltage Level
Hi-Z = High Impedance
1
PS8490C
11/18/04