pi5c32245 Pericom Semiconductor Corporation, pi5c32245 Datasheet
pi5c32245
Manufacturer Part Number
pi5c32245
Description
8-bit, 2-port Bus Switch With 25w Series Resistor Semiconductor Corporation
Manufacturer
Pericom Semiconductor Corporation
Datasheet
1.PI5C32245.pdf
(3 pages)
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2
Logic Block Diagram
Product Features:
• Near zero propagation delay
• 25 series resistor termination
• 5
• Direct bus connection when switches are ON
• Ultra Low Quiescent Power (0.2 µA Typical)
• Pin compatible with 74 series 245 logic devices
• Packages available:
Truth Table
Note:
1. H
– Ideally suited for notebook applications
– 20-pin 150 mil wide plastic QSOP (Q)
Function
Disconnect
Connect
L
Hi-Z = High Impedance
BE
A
A
0
7
switches connect inputs to outputs
= High Voltage Level
= Low Voltage Level
(1)
BE
H
L
A
B
Hi-Z
0–7
0–7
B
B
0
7
149
Product Pin Description
Product Pin Configuration
Product Description:
Pericom Semiconductor’s PI5C series of logic circuits are
produced in the Company’s advanced 0.8 micron CMOS technology,
achieving industry leading performance.
The PI5C32245 is a 8-bit, 2-port bus switch designed with a low
ON resistance (5 ) 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. Pinout is compatible with
PI74FCT245T (Octal Bidirectional Transceiver). The device has a
built-in 25 resistor to reduce noise resulting from reflections, thus
eliminating the need for an external terminating resistor.
Pin Name
BE
A
B
GND
V
0
0
CC
–
–
7
7
GND
NC
A
A
A
A
Description
Bus Enable Input (Active LOW)
Bus A
Bus B
Ground
Power
A
A
A
A
4
5
6
7
0
1
2
3
1
2
3
4
5
6
7
8
9
10
with 25 Series Resistor
20-PIN
8-Bit, 2-Port Bus Switch
Q
20
19
18
17
16
15
14
13
12
11
V
BE
B
B
B
B
B
B
B
B
CC
0
1
2
3
4
5
6
7
PI5C32245
PS8136
08/20/97
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pi5c32245 Summary of contents
Page 1
... Pericom Semiconductor’s PI5C series of logic circuits are produced in the Company’s advanced 0.8 micron CMOS technology, achieving industry leading performance. The PI5C32245 is a 8-bit, 2-port bus switch designed with a low ON resistance (5 ) allowing inputs to be connected directly to outputs. The bus switch creates no additional propagational delay or additional ground bounce noise ...
Page 2
... Exposure to absolute maximum rating conditions for extended periods may affect reli- ability. =5V ±5%) CC Min. Typ (2) 2.0 –0.5 –0.7 100 150 = Typ Max PI5C32245 Max. Units V 0.8 V ±1 µA ±1 µA ±1 µA –1 Units PS8136 08/20/97 ...
Page 3
... Description Conditions (2, 500 L Pericom Semiconductor Corporation 151 8-BIT, 2-PORT BusSwitch with 25 Series Resistor (2) Min. Typ = GND (3) = 3.4V IN PI5C32245 Com. Min. Max. Unit 1.25 ns 1.5 7.5 ns 1.5 5.5 ns PI5C32245 1 Max. Units 3.0 µA 2 2.5 mA 0.25 mA/ 3 MHz PS8136 08/20/97 ...