PI3B16244V Просмотр технического описания (PDF) - Pericom Semiconductor
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PI3B16244V Datasheet PDF : 3 Pages
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PI3B16244
PI3B162244 (25Ω) 1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122
3.3V, Hot Insertion, 16-Bit, 4-Port BusSwitch
Product Features
• Near-zero propagation delay
• 5Ω switches connect inputs to outputs when enabled
• Fast Switching Speed - 4ns max.
• Permits Hot Insertion
• Pin compatible with 74 series16244
• Operating Vcc: 3.0V to 3.6V
• Industrial operating temperature: –40°C to +85°C
• Packages available:
– 48-pin 240 mil wide thin plastic TSSOP (A)
– 48-pin 300 mil wide plastic SSOP (V)
Logic Block Diagram
1BE
3BE
1A0
1B0
3A0
1A1
1B1
3A1
1A2
1B2
3A2
1A3
1B3
3A3
2BE
4BE
2A0
2B0
4A0
2A1
2B1
4A1
2A2
2B2
4A2
2A3
2B3
4A3
Truth Table(1)
Function
nBE nA0–7
Disconnect
H Hi-Z
Connect
L nB0–7
Note: 1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
Product Description
Pericom Semiconductor’s PI3B series of logic circuits are produced
using the Company’s advanced 0.35 micron CMOS technology.
The PI3B16244 and PI3B162244 are 16-bit, 4-port bus switches
that are pin compatible with the 74 series 16244 16-bit driver. Four
enable signals (nBE) turn the switches on similar to the enable
signals of the 16244. The bus switches create no additional
propagation delay or ground bounce noise.
The PI3B162244 device has a built-in 25-ohm series resistor to
reduce noise because of reflections, thus eliminating the need for
an external terminating resistor.
Product Pin Configuration
1BE 1
48 2BE
1B0 2
47 1A0
1B1 3
46 1A1
3B0
GND 4
45 GND
1B2 5
44 1A2
3B1
1B3 6
43 1A3
VCC 7
42 VCC
3B2
2B0 8
41 2A0
2B1 9
40 2A1
3B3
GND 10
39 GND
48-Pin
2B2 11 A, V 38 2A2
2B3 12
37 2A3
3B0 13
36 3A0
3B1 14
35 3A1
4B0
GND 15
34 GND
3B2 16
33 3A2
4B1
3B3 17
32 3A3
VCC 18
31 VCC
4B2
4B0 19
30 4A0
4B1 20
29 4A1
4B3
GND 21
28 GND
4B2 22
27 4A2
4B3 23
26 4A3
4BE 24
25 3BE
Product Pin Description
Pin Name I/O Description
nBE
I Bus Output Enable
(Active LOW)
nA0-nA7 I/O Bus A
nB0-nB7 I/O Bus B
1
PS8170B 11/06/98
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