PI5C3125
PI5C3126
4-Bit Bus Switch
with Individual Enables
Features Description
Pericom Semiconductors PI5C3125 and PI5C3126 are 4-bit Bus
Near-Zero propagation delay
Switches designed with four individual 5 bus switches with fast
5 switches connect inputs to outputs
indiviual enables in an industry standard 74XX125/126 pinout.
Direct bus connection when switches are ON When enabled via the associated Bus Enable (BE) pin, the A pin
is directly connected to the B pin for that particular gate. The
Ultra Low Quiescent Power (0.1A typical)
bus switch introduces no additional propagation delay or additional
Ideally suited for notebook applications
ground bounce noise.
Packaging (Pb-free & Green available):
The PI5C3125 device has active LOW enables, and the PI5C3126
16-pin 150-mil wide plastic QSOP (Q)
has active HIGH enables.
PI5C3125 Block Diagram PI5C3126 Block Diagram
A0
B0
A0
B0
BE0
BE0
A1 B1
A1
B1
BE1
BE1
A2
B2
A2
B2
BE2
BE2
A3 B3
A3
B3
BE3
BE3
11-0002 PS7013J 07/21/10
1PI5C3125/3126
4-Bit Bus Switch w/Individual Enables
PI5C3125 16-Pin Configuration PI5C3126 16-Pin Configuration
1 Vcc
NC 16
1 Vcc
NC 16
2 BE3
BE0 15
2 BE3
BE0 15
A0 3 14 A3
A0 3 14 A3
16-Pin
16-Pin
4 B3
B0 13
4 B3
B0 13
Q
Q
5 BE2
BE1 12
5 BE2
BE1 12
6 A2
A1 11
6 A2
A1 11
7 B2
B1 10
7 B2
B1 10
GND 8 9 NC
GND 8 9 NC
(1)
Pin Description
Truth Table
Pin Name Description PI5C3125 PI5C3126
An Bn V Function
CC
BEn BEn
BEn Switch Enable (PI5C3125)
(2)
X X Hi-Z Hi-Z GND Disconnect
BEn Switch Enable (PI5C3126)
H L Hi-Z Hi-Z V Disconnect
CC
A3-A0 Bus A
L H Bn An V Connect
CC
B3-B0 Bus B
Notes:
V Power
CC
1. H = High Voltage Level, L = Low Voltage Level,
GND Ground
HI-Z = High Impedance, X = Dont Care
2. A pull-up resistor should be provided for power-up protection.
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Note:
Storage Temperature .................................................................. 65C to +150C
Stresses greater than those listed under MAXIMUM
Ambient Temperature with Power Applied ................................. 40C to +85C
RATINGS may cause permanent damage to the device.
This is a stress rating only and functional operation of
Supply Voltage to Ground Potential (Inputs & V Only) ........... 0.5V to +7.0V
CC
the device at these or any other conditions above those
Supply Voltage to Ground Potential (Outputs & D/O Only) ........ 0.5V to +7.0V
indicated in the operational sections of this specifica -
tion is not implied. Exposure to absolute maximum
DC Input Voltage .......................................................................... 0.5V to +7.0V
rating conditions for extended periods may affect
DC Output Current ......................................................................................120mA
reliability.
Power Dissipation ..........................................................................................0.5W
PS7013J 07/21/10
11-0002
2