3.3V/ 16-Bit/ 2-Port NanoSwitch
Description
PI3B16245 PI3B162245 (25Ω) 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012 3.
3V, Hot Insertion, 16-Bit, 2-Port BusSwitch
Product Features
• • • • • • • • Near-zero propagation delay 5Ω switches connect inputs to outputs Fast Switching Speed - 4ns max.
Permits Hot Insertion Pin compatible with 74 series16245 Operating Vcc Range: 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)
Product Description
Pericom Semiconductor’s PI3B series of logic circuits are produced using the Company’s advanced 0.
35 micron CMOS technology.
The PI3B16245 and PI3B162245 are 3.
3 volt, hot-insertion, 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 switches create no additional propagational delay or additional ground bounce noise.
The PI3B162245 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
1A0 1B0
Product Pin Configuration
NC
1B0 1B1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
48 47 46 45 44 43 42 41 40 39 38
1BE 1A0 1A1
GND
1A7
1 B7
1B2 1B3
GND
1A2 1A3
1BE
VCC 1B4 1B5 GND 1B6
1B7
VCC
1A4 1A5
GND
1A6 1A7 2A0 2A1
2A0
2B0
2B0 2B1
48-Pin 37 A, V
36 35 34 33 32 31 30 29 28 27 26 25
GND 2B2
2A7
2 B7
2B3 VCC 2B4 2B5
GND
2A2 2A3
VCC 2A4
2A5
2BE
Truth Table
Function Disconnect Connect
(1)
GND 2B6 2B7 NC
GND
2A6 2A7 2BE
nBE H L
nA0–7 Hi-Z nB0–7
Product Pin Description
Pin Name nBE nA0-nA7 nB0-nB7 I/O I
I/O I/O
Note: 1.
H = High Voltage Leve...
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