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부품번호 | DM74ALS645A 기능 |
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기능 | Octal Bus Transceivers | ||
제조업체 | Fairchild Semiconductor | ||
로고 | |||
전체 4 페이지수
March 1987
Revised February 2000
DM74ALS645A
Octal Bus Transceivers
General Description
These octal bus transceivers are designed for asynchro-
nous two-way communication between data busses. These
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 the busses are effectively
isolated.
Features
s Advanced Oxide-isolated Ion-implanted Schottky TTL
process
s Switching performance is guaranteed over full tempera-
ture and VCC supply range
s Switching performance specified at 50 pF
s PNP input design reduces input loading
Ordering Code:
Order Number Package Number
Package Description
DM74ALS645AWM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
DM74ALS645AN
N20A
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Logic Diagram
Function Table
Control
Inputs
G DIR
LL
LH
HX
L = LOW Logic Level
H = HIGH Logic Level
X = Either LOW or HIGH Logic Level
Operation
B Data to A Bus
A Data to B Bus
Isolation
© 2000 Fairchild Semiconductor Corporation DS009304
www.fairchildsemi.com
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Package Number N20A
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
sonably expected to result in a significant injury to the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be rea-
sonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
www.fairchildsemi.com
4
4페이지 | |||
구 성 | 총 4 페이지수 | ||
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부품번호 | 상세설명 및 기능 | 제조사 |
DM74ALS645A | Octal Bus Transceivers | Fairchild Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |