The ’HC393 devices contain eight flip-flops and additional gating to implement two individual 4-bit counters in a single package. These devices comprise two independent 4-bit binary counters, each having a clear (CLR) and a clock (CLK) input. N-bit binary counters can be implemented with each package, providing the capability of divide by 256. The ’HC393 devices have parallel outputs from each counter stage so that any submultiple of the input count frequency is available for system timing signals.
| Function | Counter |
| Bits (#) | 4 |
| Technology family | HC |
| Supply voltage (min) (V) | 2 |
| Supply voltage (max) (V) | 6 |
| Input type | Standard CMOS |
| Output type | Push-Pull |
| Features | Balanced outputs, High speed (tpd 10-50ns), Positive input clamp diode |
| Operating temperature range (°C) | -55 to 125 |
| Rating | Military |
| CDIP (J) | 14 | 130.4652 mm² 19.56 x 6.67 |
| CFP (W) | 14 | 58.023 mm² 9.21 x 6.3 |
| LCCC (FK) | 20 | 79.0321 mm² 8.89 x 8.89 |
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