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參數資料
| 型號： | MC74ACT245NG |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 通用總線功能 |
| 英文描述： | Octal Bidirectional Transceiver with 3−State Inputs/Outputs |
| 中文描述： | ACT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDIP20 |
| 封裝： | LEAD FREE, PLASTIC, DIP-20 |
| 文件頁數： | 1/10頁 |
| 文件大小： | 122K |
| 代理商： | MC74ACT245NG |
Semiconductor Components Industries, LLC, 2006
November, 2006 Rev. 7
1
Publication Order Number:
MC74AC245/D
MC74AC245, MC74ACT245
Octal Bidirectional
Transceiver with 3State
Inputs/Outputs
The MC74AC245/74ACT245 contains eight noninverting
bidirectional buffers with 3state outputs and is intended for
busoriented applications. Current sinking capability is 24 mA at both
the A and B ports. The Transmit/Receive (T/R) input determines the
direction of data flow through the bidirectional transceiver. Transmit
(activeHIGH) enables data from A ports to B ports; Receive
(activeLOW) enables data from B ports to A ports. The Output
Enable input, when HIGH, disables both A and B ports by placing
them in a High Z condition.
Features
Noninverting Buffers
Bidirectional Data Path
A and B Outputs Source/Sink 24 mA
′
ACT245 has TTL Compatible Inputs
PbFree Packages are Available
PIN ASSIGNMENT
PIN
FUNCTION
OE
Output Enable Input
T/R
Transmit/Receive Input
A
0
A
7
Side A 3State Inputs or 3State Outputs
B
0
B
7
Side B 3State Inputs or 3State Outputs
TRUTH TABLES
Inputs
Outputs
OE
T/R
L
L
H
L
H
X
Bus B Data to Bus A
Bus A Data to Bus B
High Z State
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Figure 1.
19
20
18
17
16
15
14
2
1
3
4
5
6
7
V
CC
13
8
12
9
11
10
OE
B
0
B
1
B
2
B
3
B
4
B
5
B
6
B
7
T/R
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
GND
http://onsemi.com
SOIC20W
DW SUFFIX
CASE 751D
TSSOP20
DT SUFFIX
CASE 948E
SOEIAJ20
M SUFFIX
CASE 967
1
1
1
PDIP20
N SUFFIX
CASE 738
1
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
ORDERING INFORMATION
See general marking information in the device marking
section on page 7 of this data sheet.
DEVICE MARKING INFORMATION
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| MC74ACT00DG | Quad 2−Input NAND Gate |
| MC74ACT00DR2 | Quad 2−Input NAND Gate |
| MC74ACT00DR2G | Quad 2−Input NAND Gate |
| MC74ACT00DTR2 | Quad 2−Input NAND Gate |
| MC74ACT00DTR2G | Quad 2−Input NAND Gate |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MC74ACT245NG | 制造商:ON Semiconductor 功能描述:Logic - Transceiver IC |
| MC74ACT245SD | 制造商:Motorola 功能描述:MOTOROLA NXF8B |
| MC74ACT251D | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC74ACT251DR2 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC74ACT253 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:DUAL 4-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS |
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