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參數(shù)資料
| 型號： | MM74HC245AWMX |
| 廠商： | Fairchild Semiconductor |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 0K |
| 描述： | IC TRANSCVR TRI-ST 8BIT 20SOIC |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | 74HC |
| 邏輯類型： | 收發(fā)器，非反相 |
| 元件數(shù)： | 1 |
| 每個元件的位元數(shù)： | 8 |
| 輸出電流高，低： | 7.8mA，7.8mA |
| 電源電壓： | 2 V ~ 6 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(yīng)商設(shè)備封裝： | 20-SOIC |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | MM74HC245AWMXDKR |
2005 Fairchild Semiconductor Corporation
DS005165
www.fairchildsemi.com
September 1983
Revised May 2005
MM74HC245A
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MM74HC245A
Octal 3-STATE Transceiver
General Description
The MM74HC245A 3-STATE bidirectional 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
and high noise immunity usually associated with CMOS cir-
cuitry, yet has speeds comparable to low power Schottky
TTL circuits.
This device has an active LOW enable input G and a direc-
tion control input, DIR. When DIR is HIGH, data flows from
the A inputs to the B outputs. When DIR is LOW, data flows
from the B inputs to the A outputs. The MM74HC245A
transfers true data from one bus to the other.
This device can drive up to 15 LS-TTL Loads, and does not
have Schmitt trigger inputs. All inputs are protected from
damage due to static discharge by diodes to VCC and
ground.
Features
s Typical propagation delay: 13 ns
s Wide power supply range: 2–6V
s Low quiescent current: 80
PA maximum (74 HC)
s 3-STATE outputs for connection to bus oriented systems
s High output drive: 6 mA (minimum)
s Same as the 645
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
MM74HC245AWM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
MM74HC245ASJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
MM74HC245AMTC
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
MM74HC245AN
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
Control
Inputs
Operation
G
DIR
L
B data to A bus
L
H
A data to B bus
HX
Isolation
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MM74HC245N | 制造商:National Semiconductor Corporation 功能描述:Bus Transceiver, Single, 8 Bit, 20 Pin, Plastic, DIP 制造商:Texas Instruments 功能描述:Bus Transceiver, Single, 8 Bit, 20 Pin, Plastic, DIP |
| MM74HC251 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:8-Channel 3-STATE Multiplexer |
| MM74HC251M | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 8-Chan 3-STATE Multi RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| MM74HC251M | 制造商:Fairchild Semiconductor Corporation 功能描述:IC 74HC CMOS SMD 74HC251 SOIC16 |
| MM74HC251M_Q | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 8-Chan 3-STATE Multi RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
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