PI3B3244LE(2010) Ver la hoja de datos (PDF) - Pericom Semiconductor
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PI3B3244LE Datasheet PDF : 4 Pages
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Features
ÎÎNear-Zero propagation delay
ÎÎ5-ohm switches connect inputs to outputs
ÎÎFast Switching Speed: 4.5ns (max.)
ÎÎUltra-Low Quiescent Power (0.2μA Typical)
àà Ideally suited for notebook applications
ÎÎPackaging (Pb-free & Green):
àà 20-pin 173-mil wide plastic TSSOP (L)
Block Diagram
PI3B3244
3.3V, Hot Insertion,
8-Bit, 2-Port NanoSwitchTM
Description
Pericom Semiconductor’s PI3B series of logic circuits are pro-
duced using the Company’s advanced sub-micron CMOS tech-
nology, achieving industry leading performance.
The PI3B3244 features a set of 3.3V 8-bit bus switches, which is
pinout and function compatible with the P74FCT244T, 74F244,
and 74ALS/AS/LS2448-bit drivers. Two enable signals (BEn) turn
the switches on similar to the enable signals of the 244. The bus
switch create no additional propagation delay or ground bounce
noise.
Pin Configuration
BE1
1A0
SW
1A1
SW
1A2
SW
1A3
SW
BE2
2A0
SW
2A1
SW
2A2
SW
2A3
SW
1B0
1B1
1B0
1B1
SW
A
B
2B0
BE
2B1
2B2
2B3
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11-0003
BE1 1
1A0 2
2B3 3
1A1 4
2B2 5
1A2 6
2B1 7
1A3 8
2B0 9
GND 10
20 Vcc
19
BE2
18
1B0
17
2A3
16
1B1
15
2A2
14
1B2
13
2A1
12
1B3
11
2A0
Pin Description
Pin Name Description
BEn Bus Enable Input (Active LOW)
A0-7 Bus A
B0-7 Bus B
GND Ground
VCC
Power
Truth Table(1)
BE1
BE2
1A, 1B
2A, 2B
H
H
Disconnect
Disconnect
L
H
1A = 1B
Disconnect
H
L
Disconnect
2A = 2B
L
L
1A = 1B
2A = 2B
Note:
1. H = High Voltage Level, L = Low Voltage Level
1
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PS8149H
09/27/10
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