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參數資料
| 型號： | 74LS645 |
| 廠商： | Motorola, Inc. |
| 英文描述： | OCTAL BUS TRANSCEIVERS |
| 中文描述： | 八進制總線收發器 |
| 文件頁數： | 1/5頁 |
| 文件大小： | 52K |
| 代理商： | 74LS645 |
2000 Fairchild Semiconductor Corporation
DS009056
www.fairchildsemi.com
August 1986
Revised March 2000
DM74LS645
Octa
l
Bus
T
ranscei
ver
DM74LS645
Octal Bus Transceiver
General Description
These octal bus transceivers are designed for asynchro-
nous two-way communication between data buses. The
devices transmit data from the A bus to the B bus or from
the B bus to the A bus depending upon the level at the
direction control (DIR) input. The enable input (G) can be
used to disable the device so that the buses are effectively
isolated.
Features
s Bi-directional bus transceivers in high-density 20-pin
packages
s Hysteresis at bus inputs improves noise margins
s 3-STATE outputs
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Function Table
H
= HIGH Level
L
= LOW Level
X
= Irrelevant
Order Number
Package Number
Package Description
DM74LS645WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
DM74LS645N
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Control
Inputs
DM74LS645
G
DIR
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
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PDF描述 |
|---|---|
| 74LS670 | 4 x 4 REGISTER FILE WITH 3-STATE OUTPUTS |
| 74LS32 | 8-BIT SHIFT REGISTERS WITH SIGN EXTEND |
| 74LS322 | 8-BIT SHIFT REGISTERS WITH SIGN EXTEND |
| 74VHC138 | 3-to-8 Line Decoder |
| 74VHC139MTC | Dual 2-to-4 Decoder/Demultiplexer |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 74LS645-1N | 制造商:Advanced Micro Devices 功能描述: 制造商:Texas Instruments 功能描述: |
| 74LS646 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:OCTAL BUS TRANSCEIVERS AND REGISTERS |
| 74LS651XC WAF | 制造商:Advanced Micro Devices 功能描述: |
| 74LS652NS | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| 74LS669 | 制造商:Semiconductors 功能描述: |
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