PI3B16861A 데이터 시트보기 (PDF) - Pericom Semiconductor
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PI3B16861A Datasheet PDF : 3 Pages
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PI3B16861/PI3B162861
PI3B16861 1234567890123456789012345678901212345678901234567890123456789012123456789012345367.839V012,3H456o7t89I0n12s1e2r34t5i6o7n89,0122034-5B67i8t9,0212-3P45o6r78t90B12u1s23S4w567i8t9c0h12
PI3B162861 (25Ω) 1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122
3.3V, Hot Insertion, 20-Bit, 2-Port BusSwitch
Product Features
• Near-zero propagation delay
• 5Ω or 25Ω switches connect inputs to outputs
• Fast Switching Speed - 5ns (max.)
• Direct bus connection when switches are ON
• Permits Hot Insertion
• 32X384 function with flow through pinout make board
layout easier
• Vcc Operating Range: 3.0V to 3.6V
• Industrial operating temperature: –40°C to +85°C
• Packages 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)
Product Description
Pericom Semiconductor’s PI3B series of Bus Switch circuits are
produced in the Company’s advanced 0.35 micron CMOS
technology, achieving industry leading speed.
The PI3B16861 is configured as a 3.3 volt, hot insertion, 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 switch is turned ON by the Bus Enable
(BEx) input signal.
The PI3B162861 device has a built-in 25-ohm series resistor to
reduce noise resulting from reflections, thus eliminating the need
for an external terminating resistor.
Logic Block Diagram
Product Pin Configuration
A0
B0
NC 1
A0 2
48 VCC
47 BE1
A1 3
46 B0
A2 4
45 B1
A9
B9
A3 5
A4 6
44 B2
43 B3
A5 7
42 B4
BE1
A6 8
A7 9
41 B5
40 B6
A8 10
39 B7
A10
B10
A19
B19
BE2
Truth Table(1)
Function
Disconnect
BEX A19-A0
H Hi-Z
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
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
Connect
L B19-B0
Note:
1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
Product Pin Description
Pin Name
Description
BEx
A19-A0
B19-B0
Bus Enable Inputs (Active LOW)
Bus A
Bus B
1
PS8175B 11/06/98
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