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PI5C16245 Datasheet, PDF (1/5 Pages) Pericom Semiconductor Corporation – 16-Bit, 2-Port Bus Switch
PI5C16245
PI5C162245 (25Ω)
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16-Bit, 2-Port Bus Switch
Product Features
• Near-zero propagation delay
• 5Ω switches connect inputs to outputs
• Direct bus connection when switches are ON
• Ultra-low quiescent power (0.2µA typical)
– Ideally suited for notebook applications
• Pin compatible with 74 series16245
• Industrial operating temperature: –40°C to +85°C
• Packages available:
– 48-pin 240 mil wide thin plastic TSSOP (A)
– 48-pin 150 mil wide plastic BQSOP (B)
– 48-pin 300 mil wide plastic SSOP (V)
Logic Block Diagram
Product Description
Pericom Semiconductor’s PI5C series of logic circuits are produced
using the Company’s advanced 0.6 micron CMOS technology.
The PI5C16245 and PI5C162245 are 16-bit, 2-port bus switches
that are pin compatible with the 74 series 16245 16-bit transceiver.
Two enable signals (nBE) turn the switches on, similar to the enable
signals of the 16245. The bus switch creates no additional
propagational delay or additional ground bounce noise.
The PI5C162245 device has a built-in 25-ohm series resistor to reduce
reflection noise, thus eliminating the need for an external terminating
resistor.
Product Pin Configuration
1A0
1A7
1BE
2A0
2A7
2BE
Truth Table(1)
Function
nBE
Disconnect
H
Connect
L
Note: 1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
1B0
1B7
2B0
2B7
nA0-7
Hi-Z
nB0-7
NC
1B0
1B1
GND
1B2
1B3
VCC
1B4
1B5
GND
1B6
1B7
2B0
2B1
GND
2B2
2B3
VCC
2B4
2B5
GND
2B6
2B7
NC
1
48
2
47
3
46
4
45
5
44
6
43
7
42
8
41
9
40
10
39
11
38
12 48-Pin 37
13 A,B,V 36
14
35
15
34
16
33
17
32
18
31
19
30
20
29
21
28
22
27
23
26
24
25
1BE
1A0
1A1
GND
1A2
1A3
VCC
1A4
1A5
GND
1A6
1A7
2A0
2A1
GND
2A2
2A3
VCC
2A4
2A5
GND
2A6
2A7
2BE
Product Pin Description
Pin Name I/O Description
nBE
I
Bus Enable Input (Active LOW)
nA0-nA7 I/O Bus A
nB0-nB7
I/O Bus B
1
PS7025B 06/21/00
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