PERIC PI3B162244, PI3B16244 Datasheet
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PI3B16244 |
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PI3B162244 (25Ω) |
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3.3V, Hot Insertion, 16-Bit, 4-Port BusSwitch
Product Features
•Near-zero propagation delay
•5 Ω 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)
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.
Logic Block Diagram
1BE |
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3BE |
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1A0 |
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1B0 |
3A0 |
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1A1 |
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1B1 |
3A1 |
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1A2 |
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1B2 |
3A2 |
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1A3 |
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1B3 |
3A3 |
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2BE |
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4BE |
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2A0 |
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2B0 |
4A0 |
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2A1 |
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2B1 |
4A1 |
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2A2 |
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2B2 |
4A2 |
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2A3 |
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2B3 |
4A3 |
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Truth Table(1)
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Function |
nBE |
nA0–7 |
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Disconnect |
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H |
Hi-Z |
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Connect |
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L |
nB0–7 |
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Note: 1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
Product Pin Configuration
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1BE |
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1 |
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48 |
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2BE |
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1B0 |
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2 |
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47 |
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1A0 |
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3B0 |
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1B1 |
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3 |
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46 |
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1A1 |
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GND |
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4 |
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45 |
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GND |
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3B1 |
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1B2 |
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5 |
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44 |
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1A2 |
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1B3 |
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6 |
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43 |
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1A3 |
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3B2 |
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VCC |
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7 |
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42 |
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VCC |
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2B0 |
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8 |
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41 |
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2A0 |
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2B1 |
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9 |
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40 |
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2A1 |
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3B3 |
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GND |
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10 |
48-Pin |
39 |
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GND |
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2B2 |
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11 |
38 |
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2A2 |
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2B3 |
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12 |
A, V |
37 |
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2A3 |
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3B0 |
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13 |
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36 |
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3A0 |
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4B0 |
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3B1 |
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14 |
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35 |
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3A1 |
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GND |
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15 |
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34 |
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GND |
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4B1 |
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3B2 |
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16 |
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33 |
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3A2 |
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3B3 |
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17 |
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3A3 |
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4B2 |
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VCC |
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18 |
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31 |
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VCC |
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4B0 |
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19 |
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30 |
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4A0 |
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4B3 |
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4B1 |
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20 |
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29 |
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4A1 |
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GND |
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21 |
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28 |
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GND |
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4B2 |
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22 |
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27 |
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4A2 |
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4B3 |
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23 |
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26 |
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4A3 |
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4BE |
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24 |
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25 |
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3BE |
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Product Pin Description
Pin Name |
I/O |
Description |
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nBE |
I |
Bus Output Enable |
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(Active LOW) |
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nA0-nA7 |
I/O |
Bus A |
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nB0-nB7 |
I/O |
Bus B |
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1 |
PS8170B |
11/06/98 |
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