PI74FCT245TQEX Pericom Semiconductor, PI74FCT245TQEX Datasheet
PI74FCT245TQEX
Manufacturer Part Number
PI74FCT245TQEX
Description
IC TXRX OCTAL BIDIR 20QSOP
Manufacturer
Pericom Semiconductor
Datasheet
1.PI74FCT245ATQ.pdf
(7 pages)
Specifications of PI74FCT245TQEX
Lead Free Status / RoHS Status
Lead free / RoHS 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
Features
• Pin compatible with bipolar FAST™ Series at a higher speed
• 25-ohm series resistor on all outputs (FCT2245Tonly)
• TTL input and output levels
• Low ground bounce outputs
• Extremely low static power
• Hysteresis on all inputs
• Industrial operating temperature range: –40°C to +85°C
• Packaging (Pb-free & Green Available):
Block Diagram
and lower power consumption
– 20-pin 173-mil wide plastic TSSOP (L)
– 20-pin 300-mil wide plastic SOIC (S)
– 20-pin 209-mil wide plastic SSOP (H)
– 20-pin 150-mil wide plastic QSOP (Q)
06-0207
T/R
A0
A1
A2
A3
A4
A5
A6
A7
OE
B0
B1
B2
B3
B4
B5
B6
B7
Fast CMOS Octal Bidirectional Transceivers
1
Pin Configuration
Description
Pericom Semiconductor’s PI74FCT245T and PI74FCT2245T are
8-bit wide octal buffer bidirectional transceivers designed for
asynchronous two-way communication between data buses. The
transmit/receive (T/R) input 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 Hi-Z condition.
PI74FCT2245T has a built-in 25-ohm series resistor on all outputs to
reduce noise because of reflections, thus eliminating the need for an
external terminating resistor.
Pin Description
Truth Table
1.
Pin Name
OE
T/R
A
B
GND
V
OE
0
CC
H
H = High Voltage Level, X = Don't Care, L = Low
Voltage Level, Z = High Impedance
0
L
L
-B
Inputs
-A
7
7
T/R
H
X
L
(1)
GND
PI74FCT2245T (25Ω Ω Ω Ω Ω Series)
T/R
A
A
A
A
A
A
A
A
Description
3-State Output Enable Inputs (Active LOW)
Transmit/Receive Input
Side A Inputs or 3-State Outputs
Side B Inputs or 3-State Outputs
Ground
Power
0
1
2
3
4
5
6
7
Bus B Data to Bus A
Bus A Data to Bus B
High Z State
1
2
3
4
5
6
7
8
9
10
Outputs
20
19
18
17
16
15
14
13
12
11
PI74FCT245T
Vcc
OE
B
B
B
B
B
B
B
B
0
1
2
3
4
5
6
7
PS2012E
08/08/06
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PI74FCT245TQEX Summary of contents
Page 1
... PI74FCT2245T (25Ω Ω Ω Ω Ω Series) Fast CMOS Octal Bidirectional Transceivers Description Pericom Semiconductor’s PI74FCT245T and PI74FCT2245T are 8-bit wide octal buffer bidirectional transceivers designed for asynchronous two-way communication between data buses. The transmit/receive (T/R) input determines the direction of data flow through the bidirectional transceiver ...
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Page 7
... S Notes: • Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ • Pb-free & Green • Adding an X suffix = Tape/Reel Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com 06-0207 PI74FCT2245T(25 Ohm Series ) Octal BidirectionalTransceivers Speed Grade Package Type Blank 20-pin QSOP Blank Pb-free & ...