PI5C32X2384 Datasheet, PDF (1/3 Pages) Pericom Semiconductor Corporation – 20-Bit Bus Switch with 25W Series Resistor

PI5C32X2384
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PI5C32X2384
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20-Bit Bus Switch with 25Ω Series Resistor
Product Features
• Near-zero propagation delay
• 25Ω series resistor
• 5Ω switches connect inputs to outputs
• Direct bus connection when switches are ON
• Ultra-low quiescent power 32X2384 (0.2µA typical)
– Ideally suited for notebook applications
• Packages available:
– 48-pin 150-mil wide plastic BQSOP (B)
– 48-pin 240-mil wide plastic TSSOP (A)
Logic Block Diagram
Product Description
Pericom Semiconductor’s PI5C series of BusSwitch circuits are
produced in the Company’s advanced sub-micron CMOS
technology, achieving industry leading performance.
The PI5C32X2384 is a 20-bit bus switches designed with a low ON
resistance allowing inputs to be connected directly to outputs. The
bus switch creates no additional propagational delay or additional
ground bounce noise. The switches are turned ON by the Bus
Enable (BE) input signal. Four bus enable signals are provided, one
for each of the upper and lower five bits of the two 10-bit buses.
There is an internal 25Ω series resistor to reduce noise reflection in
high-speed applications.
Product Pin Configuration
A0
B0
A5
A4
B4
A9
A15
B15 A10
A19
B19 A14
BEA
BEB
BEC
BED
Truth Table⁽¹⁾
Function
BEA BEB B4–B0 B19-B15
Disconnect
HH
Hi-Z
Hi-Z
Connect
L
H
A4-A0 Hi-Z
Connect
HL
Hi-Z A19-A15
Connect
L
L
A4-A0 A19-A15
Function
BEC BED B9–B5 B14-B10
Disconnect
HH
Hi-Z
Hi-Z
Connect
L
H
A9-A5 Hi-Z
Connect
HL
Hi-Z A14-A10
Connect
L
L
A9-A5 A14-A10
Note: 1. H = High Voltage Level, L = Low Voltage Level,
Hi-Z = High Impedance
B5
BEA 1
48 VCC
B0 2
47 B19
A0 3
46 A19
B9
A1 4
45 A18
B1 5
44 B18
B10
B2 6 _48-PIN 43 B17
A2 7 _{A, B} 42 A17
A3 8
41 A16
B14
B3 9
40 B16
B4 10
39 B15
A4 11
38 A15
GND 12
37 BEB
BEC 13
36 VCC
B5 14
35 B14
A5 15
34 A14
A6 16
33 A13
B6 17
32 B13
B7 18
31 B12
A7 19
30 A12
A8 20
29 A11
B8 21
28 B11
B9 22
27 B10
A9 23
26 A10
GND 24
25 BED
Product Pin Description
Pin Name
BEx
A19-A0
B19-B0
GND
VCC
Description
Bus Enable Inputs (Active LOW)
Bus A
Bus B
Ground
Power
1
PS8101C 01/18/99