PI5C3251
8:1 Mux/DeMux BusSwitch
1
2
3
4
5
Features:
鈥?Near-Zero propagation delay
鈥?5鈩?switches connect inputs to outputs
鈥?Direct bus connection when switches are ON
鈥?Ultra Low Quiescent Power (0.2 碌A Typical)
鈥?Ideally suited for notebook applications
鈥?Pin compatible with 74 series 251 logic devices
鈥?Packaging (Pb-free & Green available):
鈥?16-pin 150-mil wide plastic QSOP (Q)
鈥?16-pin 300-mil wide plastic SOIC (S)
鈥?16-pin 150-mil wide plastic SOIC (W)
鈥?16-pin 173-mil wide plastic TSSOP (L)
Description:
Pericom Semiconductor鈥檚 PI5C3251 is a Dual 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 (5鈩? with no
additional ground bounce noise or propagation delay.
Block Diagram
I0
I1
I2
I3
I4
I5
I6
I7
Pin Configuration
I3
I2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VCC
I4
I5
I6
I7
S0
S1
S2
6
7
8
9
10
11
Description
E
S0
S1
S2
I1
I0
Y
NC
E
Y
GND
Truth Table
(1)
E
H
L
L
L
L
L
L
L
L
Select
S
2
S
1
X
X
L
L
L
L
L
H
L
H
H
L
H
L
H
H
H
H
S
0
X
L
H
L
H
L
H
L
H
Y
Hi-Z
I0
I1
I2
I3
I4
I5
I6
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
Pin Description
Pin Name
I
0
鈥?/div>
7
S
0
鈥?/div>
2
E
Y
GND
V
CC
Data Inputs
Select Inputs
Enable
Data Outputs
Ground
Power
12
13
14
15
Note:
1.
H = High Voltage Level, L = Low Voltage Level
1
PS7016B
09/14/04
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