8:1 Mux/DeMux NanoSwitch
PI3B3251
3.3V, 8:1 Mux/DeMux NanoSwitch™
Features
• Near-Zero propagation delay
• 5Ω switches connect inputs to outputs...
Description
PI3B3251
3.3V, 8:1 Mux/DeMux NanoSwitch™
Features
Near-Zero propagation delay
5Ω switches connect inputs to outputs
Ultra Low Quiescent Power (0.1μA typical) – Ideally suited for notebook applications
Pin compatible with 74 series 251 logic devices
Packaging (Pb-free & Green available): – 16-pin 150-mil wide plastic QSOP (Q) – 16-pin 173-mil wide plastic TSSOP (L)
Description
Pericom Semiconductor’s PI3B3251 is a 3.3VDual 8:1 Multiplexer/ Demultiplexer with three-state outputs that is pinout compatible with the PI74FCT251T, 74F251, and 74ALS/AS/LS 251. Inputs can be connected to outputs with low On-Resistance (5Ω) with no additional ground bounce noise or propagation delay.
Block Diagram
Pin Configuration
I0 I1 I2 I3 I4 I5 I6 I7
I3 1
16 VCC
SW
E SW
SW S0
SW
I2 2
15 I4
SW
I1 3
14 I5
I0 4
13 I6
S1 SW
Y5
12 I7
IY
SW S2
NC 6
11 S0
SW
SW E
E7
10 S1
GND 8
9 S2
Y
Truth Table(1)
Select EY
S2 S1 S0
H X X X Hi-Z
L L L L I0 L L L H I1 L L H L I2 L L H H I3 L H L L I4 L H L H I5 L H H L I6 L H H H I7
Function
Disable S2-0 = 0 S2-0 = 1 S2-0 = 2 S2-0 = 3 S2-0 = 4 S2-0 = 5 S2-0 = 6 S2-0 = 7
Note: 1. H = High Voltage Level, L = Low Voltage Level
09-0037
Pin Description
Pin Name I0–7 S0–2 E
Data Inputs Select Inputs Enable
Description
Y Data Outputs
GND
Ground
VCC Power NC No Connect
1 PS8150G
03/02/09
PI3B3251 3.3V, 8:1 Mux/DeMux NanoSwitch™
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
S...
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