SN74LS93 4-Bit Binary Counters | TI.com

SN74LS93 (ACTIVE) 4-Bit Binary Counters

4-Bit Binary Counters - SN74LS93
Datasheet
 

Description

Each of these monolithic counters contains four master-slave flip-flops and additional gating to provide a divide-by-two counter and a three-stage binary counter for which the count cycle length is divide-by-five for the '90A and 'LS90, divide-by-six for the '92A and 'LS92, and the divide-by eight for the '93A and 'LS93.

All of these counters have a gated zero reset and the '90A and 'LS90 also have gated set-to-nine inputs for use in BCD nine's complement applications.

To use their maximum count length (decade, divide-by-twelve, or four-bit binary) of these counters, the CKB input is connected to the QA output. The input count pulses are applied to CKA input and the outputs are as described in the appropriate function table. A symmetrical divide-by-ten count can be obtained from the '90A or 'LS90 counters by connecting the QD output to the CKA input and applying the input count to the CKB input which gives a divide-by-ten square wave at output QA.

Features

  • '90A, 'LS90 . . . Decade Counters
  • '92A, 'LS92 . . . Divide By-Twelve Counters
  • '93A, 'LS93 . . . 4-Bit Binary Counters
TYPES TYPICAL
POWER DISSIPATION
'90A 145 mW
'92A, '93A 130 mW
'LS90, 'LS92, 'LS93 45 mW

Parametrics

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Part number Order Technology Family VCC (Min) (V) VCC (Max) (V) Bits (#) Voltage (Nom) (V) F @ nom voltage (Max) (MHz) ICC @ nom voltage (Max) (mA) tpd @ nom Voltage (Max) (ns) IOL (Max) (mA) IOH (Max) (mA) Function Type Rating Operating temperature range (C) Package Group
SN74LS93 Order now LS     4.75     5.25     4     5     35     15     70     8     -0.4     Counter     Binary     Catalog     0 to 70     PDIP | 14
SOIC | 14
SO | 14    
SN54LS93 Samples not available LS     4.75     5.25     4     5     35     15     70     8     -0.4     Counter     Binary     Military     -55 to 125     CDIP | 14
CFP | 14