PI3B3251 Просмотр технического описания (PDF) - Pericom Semiconductor Corporation
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PI3B3251 Datasheet PDF : 5 Pages
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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
I
Y
SW
S2
NC 6
11 S0
SW
SW
E
E7
10 S1
GND 8
9 S2
Y
Truth Table(1)
Select
E
Y
S2 S1 S0
Function
H
X
X
X Hi-Z
Disable
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
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
Description
I0–7
Data Inputs
S0–2
Select Inputs
E
Enable
Y
Data Outputs
GND
Ground
VCC
Power
NC
No Connect
1
PS8150G
03/02/09
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