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參數(shù)資料
| 型號(hào)： | PI74LPT245 |
| 廠商： | Pericom Semiconductor Corp. |
| 英文描述： | Fast CMOS 3.3V 8-Bit Bidirectional Transceiver |
| 中文描述： | 快速CMOS 3.3V的8位雙向收發(fā)器 |
| 文件頁(yè)數(shù)： | 1/4頁(yè) |
| 文件大?。?/td> | 61K |
| 代理商： | PI74LPT245 |
PI74LPT245
3.3V 8-BIT BIDIRECTIONAL TRANSCEIVER
1
PS2059A 01/15/97
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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.
Logic Block Diagram
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PI74LPT245
Fast CMOS 3.3V 8-Bit
Bidirectional Transceiver
B
0
A
0
OE
T/
R
R
B
1
A
1
B
2
A
2
B
3
A
3
B
4
A
4
B
5
A
5
B
6
A
6
B
7
A
7
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
VCC
OE
B0
B1
B2
B3
B4
B5
B6
B7
R
A0
A1
A2
A3
A4
A5
A6
A7
GND
20-PIN
L20
Q20
R20
S20
Product Pin Configuration
Product Pin Description
Pin Name
OE
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
T/R
A7-A0
B7-B0
GND
V
CC
Inputs
(1)
OE
L
L
H
T/R
L
H
X
Outputs
(1)
Bus B Data to Bus A
Bus A Data to Bus B
High StateZ
Truth Table
Note:
1. H = High Voltage Level, X = Don't Care,
L = Low Voltage Level, Z = High Impedance
Product Features
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)
T/
R
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PDF描述 |
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| PI74LPT541 | Fast CMOS 3.3V 8-Bit Buffer/Line Driver |
| PI74LPT543 | Fast CMOS 3.3V 8-Bit Latched Transceiver |
| PI74LVC3245AL | 8-Bit Dual Supply Bus Transceiver with 3-State Outputs |
| PI74LVC3245AQ | 8-Bit Dual Supply Bus Transceiver with 3-State Outputs |
| PI74LVC3245AS | 8-Bit Dual Supply Bus Transceiver with 3-State Outputs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PI74LPT245AQ | 制造商:Pericom Semiconductor Corporation 功能描述:Bus XCVR Single 8-CH 3-ST 20-Pin QSOP Tube |
| PI74LPT245AS | 制造商:Pericom Semiconductor Corporation 功能描述:Bus XCVR Single 8-CH 3-ST 20-Pin SOIC Tube |
| PI74LPT245Q | 制造商:Pericom Semiconductor Corporation 功能描述:Bus XCVR Single 8-CH 3-ST 20-Pin QSOP Tube |
| PI74LPT245QA | 制造商:Pericom Semiconductor Corporation 功能描述: |
| PI74LPT373AQ | 功能描述:IC OCTAL TRANS LATCH 20 QSOP RoHS:否 類別:集成電路 (IC) >> 邏輯 - 鎖銷 系列:74LPT 產(chǎn)品變化通告:Product Discontinuation 09/Dec/2010 標(biāo)準(zhǔn)包裝:1,500 系列:74VCX 邏輯類型:D 型透明鎖存器 電路:8:8 輸出類型:三態(tài) 電源電壓:1.8 V ~ 3.6 V 獨(dú)立電路:2 延遲時(shí)間 - 傳輸:1.5ns 輸出電流高，低:6mA，6mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-TFSOP（0.240"，6.10mm 寬） 供應(yīng)商設(shè)備封裝:48-TSSOP 包裝:帶卷 (TR) |
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