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PDF PI74LPT245 Data sheet ( Hoja de datos )
| Número de pieza | PI74LPT245 | |
| Descripción | Fast CMOS 3.3V 8-Bit Bidirectional Transceiver | |
| Fabricantes | Pericom Semiconductor Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de PI74LPT245 (archivo pdf) en la parte inferior de esta página. Total 4 Páginas | ||
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PI74LPT245
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PI74LPT2451122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122
Fast CMOS 3.3V 8-Bit 1
Bidirectional Transceiver
Product Features
Product Description
2
• Compatible with LCX™ and LVT™ families of products
• Supports 5V Tolerant Mixed Signal Mode Operation
– Input can be 3V or 5V
– Output can be 3V or connected to 5V bus
• Advanced Low Power CMOS Operation
• Excellent output drive capability:
Balanced drives (24 mA sink and source)
• Low ground bounce outputs
• Hysteresis on all inputs
• Industrial operating temperature range: –40°C to +85°C
• Packages available:
– 20-pin 173 mil wide plastic TSSOP (L)
– 20-pin 150 mil wide plastic QSOP (Q)
– 20-pin 150 mil wide plastic TQSOP (R)
– 20-pin 300 mil wide plastic SOIC (S)
Pericom Semiconductor’s PI74LPT series of logic circuits are pro-
duced in the Company’s advanced 0.6 micron CMOS technology,
achieving industry leading speed grades.
The PI74LPT245 is an 8-bit bidirectional transceiver designed for
asynchronous two-way communication between data buses. The
transmit/receive input pin (T/R) determines the direction of data
flow through the bidirectional transceiver. Transmit (active HIGH)
enables data from A ports to B ports, and receive (active LOW) from
B ports to A ports. The output enable (OE) input, when HIGH,
disables both A and B ports by placing them in HIGH Z condition.
The PI74LPT245 can be driven from either 3.3V or 5.0V devices
allowing this device to be used as a translator in a mixed
3.3/5.0V system.
3
4
5
6
Logic Block Diagram
TT/R
A0
A1
A2
A3
A4
A5
A6
A7
Product Pin Configuration Product Pin Description
T/RR 1
20 VCC
A0 2
19 OOEE
OE A1 3 20-PIN 18 B0
A2 4 L20 17 B1
A3 5 Q20 16 B2
B0 A4 6 R20 15 B3
A5 7 S20 14 B4
A6 8
13 B5
B1 A7 9 12 B6
GND 10
11 B7
Pin Name
OE
T/R
A7-A0
B7-B0
GND
VCC
Description
3-State Output Enable
Inputs (Active LOW)
Direction Control Input
Side A Inputs or
3-State Outputs
Side B Inputs or
3-State Outputs
Ground
Power
B2
Truth Table
B3 Inputs(1)
OE T/R
Outputs(1)
L L Bus B Data to Bus A
B4
L H Bus A Data to Bus B
H X High StateZ
B5
Note:
1. H = High Voltage Level, X = Don't Care,
B6 L = Low Voltage Level, Z = High Impedance
7
8
9
10
11
12
13
14
15
B7
1 PS2059A 01/15/97
1 page | ||
| Páginas | Total 4 Páginas | |
| PDF Descargar | [ Datasheet PI74LPT245.PDF ] | |
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