PI3B16245_04 Datasheet, PDF (1/5 Pages) Pericom Semiconductor Corporation – 3.3V, 16-Bit, 2-Port NanoSwitch™

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3.3V, 16-Bit, 2-Port NanoSwitch™
Features
• Near-Zero propagation delay
• 5-ohm switches connect inputs to outputs
• Fast Switching Speed - 4ns max.
• Pin compatible with 74 series 16245
• Operating V_CC Range: 3.0V to 3.6V
• Industrial operating temperature: –40°C to +85°C
• Packaging (Pb-free & Green available):
– 48-pin 240-mil wide thin plastic TSSOP (A)
– 48-pin 300-mil wide plastic SSOP (V)
Description
Pericom Semiconductor’s PI3B16245 is a 3.3 volt, hot-insertion, 16-
bit, 2-port bus switch that is 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 propagation delay or additional ground bounce noise.
Block Diagram
1A0
SW
1A7
SW
1BE
2A0
SW
2A7
SW
2BE
Truth Table⁽¹⁾
Function
nBE
Disconnect
H
Connect
L
Note:
1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
Pin Configuration
1B0
1B7
A
2B0
2B7
nA0-7
Hi-Z
nB0-7
SW
B
BE
NC 1
1B0 2
1B1 3
GND 4
1B2 5
1B3 6
VCC 7
1B4 8
1B5 9
GND 10
1B6 11
1B7 12
2B0 13
2B1 14
GND 15
2B2 16
2B3 17
VCC 18
2B4 19
2B5 20
GND 21
2B6 22
2B7 23
NC 24
48 1BE
47 1A0
46 1A1
45 GND
44 1A2
43 1A3
42 VCC
41 1A4
40 1A5
39 GND
38 1A6
37 1A7
36 2A0
35 2A1
34 GND
33 2A2
32 2A3
31 VCC
30 2A4
29 2A5
28 GND
27 2A6
26 2A7
25 2BE
Pin Description
Pin Name
I/O
nBE
I
nA0-nA7
I/O
nB0-nB7
I/O
Description
Bus Output Enable (Active Low)
Bus A
Bus B
1
PS8189E 10/01/04