Datasheet4U Logo Datasheet4U.com

74LS393 - Dual 4-Bit Binary Counter

General Description

Each of these monolithic circuits contains eight masterslave flip-flops and additional gating to implement two individual four-bit counters in a single package.

The DM74LS393 comprises two independent four-bit binary counters each having a clear and a clock input.

Key Features

  • s Dual version of the popular DM74LS93 s DM74LS393 dual 4-bit binary counter with individual clocks s Direct clear for each 4-bit counter s Dual 4-bit versions can significantly improve system densities by reducing counter package count by 50% s Typical maximum count frequency 35 MHz s Buffered outputs reduce possibility of collector commutation Ordering Code: Order Number DM74LS393M DM74LS373N Package Number M14A N14A Package.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
74LS393 DUAL 4-BIT BINARY COUNTERS Hitachi Semiconductor
74LS393 DUAL DECADE COUNTER Motorola
74LS395 4-BIT SHIFT REGISTER Motorola
74LS398 QUAD 2-PORT REGISTER Motorola
74LS399 QUADRUPLE 2-INPUT MULTIPLEXER Texas Instruments

Other Datasheets by Fairchild (now onsemi)

Part Number Description
74LS390 Dual 4-Bit Decade Counter
74LS30 8-Input NAND Gate
74LS32 Quad 2-Input OR Gate
74LS33 Quad 2-Input OR Gate
74LS367 Hex 3-STATE Buffer/Bus Driver

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
DM74LS393 Dual 4-Bit Binary Counter August 1986 Revised March 2000 DM74LS393 Dual 4-Bit Binary Counter General Description Each of these monolithic circuits contains eight masterslave flip-flops and additional gating to implement two individual four-bit counters in a single package. The DM74LS393 comprises two independent four-bit binary counters each having a clear and a clock input. N-bit binary counters can be implemented with each package providing the capability of divide-by-256. The DM74LS393 has parallel outputs from each counter stage so that any submultiple of the input count frequency is available for system-timing signals.