The DM54L93 by National Semiconductor is a Decade/ Divide-by-12/ and Binary Counters. Below is the official datasheet preview.
| Part number | DM54L93 |
|---|---|
| Manufacturer | National Semiconductor |
| File Size | 85.38 KB |
| Description | Decade/ Divide-by-12/ and Binary Counters |
| Datasheet |
 DM54L93_NationalSemiconductor.pdf
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Each of these monolithic counters contains four masterslave flip-flops and additional gating to provide a divide-bytwo counter and a three-stage binary counter for which the count cycle length is divide-by-eight To use their maximum count length (decade divide-bytwelve or four-bit binary) the B input is connected to the QA output The input count pulses are applied to input A and the outputs are as described in the appropriate truth table
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