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參數資料
| 型號： | PI74FCT645T |
| 廠商： | Pericom Semiconductor Corp. |
| 英文描述： | Fast CMOS Octal Bidirectional Transceivers |
| 中文描述： | 快速CMOS八路雙向收發器 |
| 文件頁數： | 1/4頁 |
| 文件大小： | 248K |
| 代理商： | PI74FCT645T |
1
PS2012B 09/22/99
Product Pin Configuration
Inputs
OE
L
L
H
T/R
L
H
X
Outputs
Bus B Data to Bus A
(2)
Bus A Data to Bus B
(2)
High Z State
1.
H = High Voltage Level, X = Don't Care, L = Low
Voltage Level, Z = High Impedance
640 is inverting from input to output.
2.
Truth Table
(1)
Pin Name
OE
T/R
A
0
-A
7
B
0
-B
7
GND
V
CC
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
Product Pin Description
Bidirectional Transceivers
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PI74FCT245T/640T/645T
PI74FCT2245T/2640T/2645T
(25
Series)
FCT245, 2245, 645, 2645 are non-inverting options.
FCT640 & FCT2640 are inverting options.
Logic Block Diagram
Product Description
Pericom Semiconductors PI74FCT series of logic circuits are
produced using the Companys advanced 0.6/0.8 micron CMOS
technology, achieving industry leading speed grades. All
PI74FCT2XXX devices have 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.
The PI74FCT245T/640T/645T and PI74FCT2245T/2640T/2645T 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 HIGH Z condition.
Product Features
PI74FCT245/640/645T and PI74FCT2245/2640T/2645T are pin
compatible with bipolar FAST Series at a higher speed and
lower power consumption
25 Ohm series resistor on all outputs (FCT2XXX only)
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
Packages available:
20-pin 173 mil wide plastic TSSOP (L)
20-pin 300 mil wide plastic DIP (P)
20-pin 150 mil wide plastic QSOP (Q)
20-pin 150 mil wide plastic TQSOP (R)
20-pin 300 mil wide plastic SOIC (S)
20-pin 209 mil wide plastic SSOP (H)
Device models available on request
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
T/R
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
GND
Vcc
OE
B
0
B
1
B
2
B
3
B
4
B
5
B
6
B
7
20-Pin
L,P,Q
R,S,H
A0
B0
OE
A1
B1
A2
B2
A3
B3
A4
B4
A5
B5
A6
B6
A7
B7
T/R
相關PDF資料 |
PDF描述 |
|---|---|
| PI74FCT2245T | Fast CMOS Octal Bidirectional Transceivers |
| PI74FCT245T | Fast CMOS Octal Bidirectional Transceivers |
| PI74FCT280AT | Fast CMOS 9-Bit Parity Generator/Checker |
| PI74FCT280BT | Fast CMOS 9-Bit Parity Generator/Checker |
| PI74FCT280CT | Fast CMOS 9-Bit Parity Generator/Checker |
相關代理商/技術參數 |
參數描述 |
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| PI74FCT646ATQ | 功能描述:IC TRANSCEIVER 8BIT 24QSOP RoHS:否 類別:集成電路 (IC) >> 邏輯 - 緩沖器，驅動器，接收器，收發器 系列:74FCT 標準包裝:1,000 系列:74ABT 邏輯類型:寄存收發器，非反相 元件數:1 每個元件的位元數:8 輸出電流高，低:32mA，64mA 電源電壓:4.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) |
| PI74FCT827ATP | 制造商:Pericom Semiconductor Corporation 功能描述:Buffer/Line Driver 10-CH Non-Inverting 3-ST CMOS 24-Pin PDIP Tube |
| PI74FCT827ATQ | 制造商:Pericom Semiconductor Corporation 功能描述:Buffer/Line Driver 10-CH Non-Inverting 3-ST CMOS 24-Pin QSOP Tube |
| PI74FCT827BTP | 制造商:Pericom Semiconductor Corporation 功能描述:Buffer/Line Driver 10-CH Non-Inverting 3-ST CMOS 24-Pin PDIP Tube |
| PI74FCT827BTQ | 制造商:Pericom Semiconductor Corporation 功能描述:Buffer/Line Driver 10-CH Non-Inverting 3-ST CMOS 24-Pin QSOP Tube |
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