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Pericom Semiconductor Corporation

PI74LCX245 Datasheet Preview

PI74LCX245 Datasheet

Fast CMOS 3.3V 8-Bit Bidirectional Transceiver

No Preview Available !

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PI74LCX245
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Fast CMOS 3.3V 8-Bit
Bidirectional Transceiver
Product Features
• Functionally compatible with FCT3, LVT, and 74 series
245 families of products
• Tri-State outputs
• 5V Tolerant inputs and outputs
• 2.0V-3.6V VCC supply operation
• Balanced sink and source output drives (24 mA)
• Low ground bounce outputs
• Supports live insertion
• ESD Protection exceeds 2000V, Human Body Model
200V, Machine Model
• Packages available:
– 20-pin 209-mil wide plastic SSOP (H)
– 20-pin 173-mil wide plastic TSSOP (L)
– 20-pin 150-mil wide plastic QSOP (Q)
– 20-pin 300-mil wide plastic SOIC (S)
Product Description
Pericom Semiconductor’s PI74LCX series of logic circuits are
produced in the Company’s advanced 0.6 micron CMOS technology
achieving high speed while maintaining low power operation.
The PI74LCX245 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 PI74LCX245 can be driven from either 3.3V or 5.0V devices
allowing this device to be used as a translator in a mixed 3.3V/5.0V
system.
Logic Block Diagram
Product Pin Configuration Product Pin Description
T/R
OE
Pin Name Description
OE 3-State Output Enable
Inputs (Active LOW)
A0
20-PIN
T/R Direction Control Input
B0 H20
L20 A0-A7 Side A Inputs or
A1
Q20 3-State Outputs
B1 S20
A2
B2
B0-B7 Side B Inputs or
3-State Outputs
A3 GND Ground
B3
A4
B4 Truth Table(1)
VCC Power
1A5 Inputs(1)
B5
OE T/R
Outputs(1)
A6
B6 L L Bus B Data to Bus A
A7 L H Bus A Data to Bus B
B7
HX
High State Z
Note:
1. H = High Voltage Level, X = Don’t Care,
L = Low Voltage Level, Z = High Impedance
DataSheet4 U .com
1 PS2099A 02/13/97




Pericom Semiconductor Corporation

PI74LCX245 Datasheet Preview

PI74LCX245 Datasheet

Fast CMOS 3.3V 8-Bit Bidirectional Transceiver

No Preview Available !

www.DataSheet4U.com
PI74LCX245
12345678901234567890123456789012123456789012345678901234567890121234567890132.3345V67889-0B12I34T56B789I0D12I1R23E456C78T90I1O234N56A78L901T23R45A678N90S12C12E34I5V67E89R012
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ............................................................–65°C to +150°C
Ambient Temperature with Power Applied ........................... –40°C to +85°C
Supply Voltage to Ground Potential (Inputs & Vcc Only) ... –0.5V to +7.0V
Supply Voltage to Ground Potential (Outputs & D/O Only) –0.5V to +7.0V
DC Input Voltage ................................................................... –0.5V to +7.0V
DC Output Current .............................................................................. 120 mA
Power Dissipation ................................................................................... 1.0W
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the de-
vice. This is a stress rating only and functional opera-
tion of the device at these or any other conditions
above those indicated in the operational sections of
this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods
may affect reliability.
Recommended Operating Conditions
Symbol Parameter
VCC Supply Voltage
Operating
Data Retention
VI Input Voltage
VO Output Voltage
HIGH or LOW State
TRI-State
IOH/IOL
Output Current
VCC = 3.0V-3.6V
VCC = 2.7V
TA Free-Air Operating Temperature
t/V
Input Edge Rate
V = 0.8V-2.0V, VCC = 3.0V
Min.
2.0
1.5
0
0
0
40
0
Max.
3.6
3.6
5.5
VCC
5.5
±24
±12
+85
10
Units
V
mA
°C
ns/V
DataSheet4 U .com
2 PS2099A 02/13/97


Part Number PI74LCX245
Description Fast CMOS 3.3V 8-Bit Bidirectional Transceiver
Maker Pericom Semiconductor Corporation
Total Page 4 Pages
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