74273 TTL 带公共时钟复位八D触发器
74系列
DM74LS273 8-Bit Register with Clear
October 1988Revised March 2000
DM74LS273
8-Bit Register with Clear
General Description
The DM74LS273 is a high speed 8-bit register, consistingof eight D-type flip-flops with a common Clock and anasynchronous active LOW Master Reset. This device issupplied in a 20-pin package featuring 0.3 inch row spac-ing.
Features
sEdge-triggered
s8-bit high speed registersParallel in and out
sCommon clock and master reset
Ordering Code:
DM74LS273WMDM74LS273N
M20BN20A
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide20-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.
Logic SymbolConnection Diagram
VCC = Pin 20GND = Pin 10
Pin Descriptions
CPD0–D7MRQ0–Q7
Data Inputs
Asynchronous Master Reset Input (Active LOW)Flip-Flop Outputs
Clock Pulse Input (Active Rising Edge)
Truth Table
MRLHH
H = HIGH Voltage LevelL = LOW Voltage LevelX = Immaterial
DnXHL
QnLHL
CPX
© 2000 Fairchild Semiconductor CorporationDS009825
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