PI5C16861 Datasheet, PDF (1/5 Pages) Pericom Semiconductor Corporation – 20-Bit, 2-Port Bus Switch

PI5C16861
PI5C162861 (25Ω)
20-Bit, 2-Port Bus Switch
Features
• Near-Zero propagation delay
• 5Ω or 25Ω switches connect inputs to outputs
• Direct bus connection when switches are ON
• 32X384 function with flow through pinout make board layout
easier
• Ultra-low quiescent power (0.2 µA typical) – ideally suited
for notebook applications
• Industrial operating temperature: –40°C to +85°C
• Packaging (Pb-free & Green available):
– 48-pin 240-mil wide plastic TSSOP (A)
– 48-pin 300-mil wide plastic SSOP (V)
– 48-pin 150-mil wide plastic BQSOP (B)
Block Diagram
A0
B0
A9
B9
BE1
A10
B10
A19
B19
BE2
Truth Table⁽¹⁾
Function
BEX
A19-A0
Disconnect
H
Hi-Z
Connect
L
B19-B0
Note:
1. H = High Voltage Level, L = Low Voltage Level,
Hi-Z = High Impedance
Description
Pericom Semiconductor’s PI5C16861 is configured as a 20-bit, 2-
port bus switch designed with a low On-Resistance (5Ω) 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 (BEx) input signal.
The PI5C162861 device has a built-in 25Ω series resistor to reduce
noise resulting from reflections, thus eliminating the need for an
external terminating resistor.
Pin Configuration
NC 1
A0 2
A1 3
A2 4
A3 5
A4 6
A5 7
A6 8
A7 9
A8 10
A9 11
GND 12
NC 13
A10 14
A11 15
A12 16
A13 17
A14 18
A15 19
A16 20
A17 ₂₁
A18 ₂₂
A19 ₂₃
GND ₂₄
48 VCC
47 BE1
46 B0
45 B1
44 B2
43 B3
42 B4
41 B5
40 B6
39 B7
38 B8
37 B9
36 VCC
35 BE2
34 B10
33 B11
32 B12
31 B13
30 B14
29 B15
28 ^B16
27 ^B17
26 ^B18
25 ^B19
Pin Description
Pin Name
Description
BEx
Bus Enable Inputs (Active LOW)
A19-A0
B19-B0
Bus A
Bus B
1
PS7026E 09/13/04