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參數資料
| 型號： | MM74HCT245WMX |
| 廠商： | Fairchild Semiconductor |
| 文件頁數： | 1/8頁 |
| 文件大小： | 0K |
| 描述： | IC TRANSCVR TRI-ST 8BIT 20SOIC |
| 標準包裝： | 1 |
| 系列： | 74HCT |
| 邏輯類型： | 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： | 7.2mA，7.2mA |
| 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： | 20-SOIC（0.295"，7.50mm 寬） |
| 供應商設備封裝： | 20-SOIC |
| 包裝： | 標準包裝 |
| 產品目錄頁面： | 1210 (CN2011-ZH PDF) |
| 其它名稱： | MM74HCT245WMXDKR |
2005 Fairchild Semiconductor Corporation
DS005366
www.fairchildsemi.com
February 1984
Revised May 2005
MM74HCT245
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MM74HCT245
Octal 3-STATE Transceiver
General Description
The MM74HCT245 3-STATE bi-directional buffer utilizes
advanced silicon-gate CMOS technology and is intended
for two-way asynchronous communication between data
buses. It has high drive current outputs which enable high
speed operation even when driving large bus capaci-
tances. This circuit possesses the low power consumption
of CMOS circuitry, yet has speeds comparable to low
power Schottky TTL circuits.
This device is TTL input compatible and can drive up to 15
LS-TTL loads, and all inputs are protected from damage
due to static discharge by diodes to VCC and ground.
The MM74HCT245 has one active low enable input (G),
and a direction control (DIR). When the DIR input is HIGH,
data flows from the A inputs to the B outputs. When DIR is
LOW, data flows from B to A.
MM74HCT devices are intended to interface between TTL
and NMOS components and standard CMOS devices.
These parts are also plug-in replacements for LS-TTL
devices and can be used to reduce power consumption in
existing designs.
Features
s TTL input compatible
s 3-STATE outputs for connection to system busses
s High output drive current: 6 mA (min)
s High speed: 16 ns typical propagation delay
s Low power: 80
PA (74HCT Series)
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Pin Assignments for DIP, SOIC, SOP and TSSOP
Top View
Truth Table
H
HIGH Level
L
LOW Level
X
Irrelevant
Order Number
Package Number
Package Description
MM74HCT245WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
MM74HCT245SJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
MM74HCT245MTC
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
MM74HCT245N
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Control
Operation
Inputs
G
DIR
245
L
B data to A bus
L
H
A data to B bus
H
X
isolation
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MM74HCT245WMX-CUT TAPE | 制造商:FAIRCHILD 功能描述:MM74HCT Series 5 V CMOS Octal 3-STATE Bi-directional Bus Transceiver - SOIC-20 |
| MM74HCT24MTC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Dual 4-Bit Inverting Buffer/Driver |
| MM74HCT251 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:8-Channel TRI-STATE-R Multiplexer |
| MM74HCT251M | 制造商:Texas Instruments 功能描述: |
| MM74HCT251N | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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