PI74LPT245AS Pericom Semiconductor, PI74LPT245AS Datasheet
PI74LPT245AS
Manufacturer Part Number
PI74LPT245AS
Description
IC TRANSCVR BI-DIR 8BIT 20SOIC
Manufacturer
Pericom Semiconductor
Series
74LPTr
Datasheet
1.PI74LPT245AQ.pdf
(4 pages)
Specifications of PI74LPT245AS
Logic Type
Transceiver, Non-Inverting
Number Of Elements
1
Number Of Bits Per Element
8
Current - Output High, Low
24mA, 24mA
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
20-SOIC
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2
Product Features
• Compatible with LCX™ and LVT™ families of products
• Supports 5V Tolerant Mixed Signal Mode Operation
• Advanced Low Power CMOS Operation
• Excellent output drive capability:
• Low ground bounce outputs
• Hysteresis on all inputs
• Industrial operating temperature range: –40°C to +85°C
• Packages available:
Logic Block Diagram
– Input can be 3V or 5V
– Output can be 3V or connected to 5V bus
Balanced drives (24 mA sink and source)
– 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)
T/R
T/
A
A
A
A
A
A
A
A
0
1
2
3
4
5
6
7
OE
B
B
B
B
B
B
B
B
0
1
2
3
4
5
6
7
Product Pin Configuration
Truth Table
Note:
1. H = High Voltage Level, X = Don't Care,
GND
T/
T/R
L = Low Voltage Level, Z = High Impedance
A0
A1
A2
A3
A4
A5
A6
A7
OE
H
L
L
1
2
3
4
5
6
7
8
9
10
Inputs
20-PIN
L20
Q20
R20
S20
(1)
1
T/R
Product Description
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.
H
X
L
20
19
18
17
16
15
14
13
12
11
3.3V 8-BIT BIDIRECTIONAL TRANSCEIVER
VCC
OE
B0
B1
B2
B3
B4
B5
B6
B7
Bus B Data to Bus A
Bus A Data to Bus B
High StateZ
Product Pin Description
Pin Name
OE
T/R
A7-A0
B7-B0
GND
V
CC
Outputs
Bidirectional Transceiver
(1)
Fast CMOS 3.3V 8-Bit
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
PI74LPT245
PI74LPT245
PS2059A 01/15/97
1
2
3
4
5
6
7
8
9
10
11
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13
14
15
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PI74LPT245AS Summary of contents
Page 1
... A 7 3.3V 8-BIT BIDIRECTIONAL TRANSCEIVER Product Description 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 ...
Page 2
...
Page 3
...
Page 4
... Com. (2) (3) Conditions Min. Max. Min 1.5 7 500 L 1.5 8.5 1.5 7.5 1.5 8.5 1.5 7.5 0.5 Pericom Semiconductor Corporation 4 LPT245A LPT245C Com. Com. (3) (3) Max. Min. Max. 1.5 4.6 1.5 4.1 1.5 6.2 1.5 5.8 1.5 5.0 1.5 4.8 1.5 6 ...