(Hong Kong)
Product Summary
The SN54HC393J is a dual 4-bit binary counter. The device contains eight flip-flops and additional gating to implement two individual 4-bit counters in a single package. The SN54HC393J comprises 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 SN54HC393J has parallel outputs from each counter stage so that any submultiple of the input count frequency is available for system timing signals.
Parametrics
SN54HC393J absolute maximum ratings: (1)Supply voltage range, VCC: –0.5 V to 7 V; (2)Input clamp current, IIK (VI < 0 or VI > VCC): ±20 mA; (3)Output clamp current, IOK (VO < 0 or VO > VCC): ±20 mA; (4)Continuous output current, IO (VO = 0 to VCC): ±25 mA; (5)Continuous current through VCC or GND: ±50 mA; (6)Package thermal impedance, θJA: 86℃/W.
Features
SN54HC393J features: (1)Wide Operating Voltage Range of 2 V to 6 V; (2)Outputs Can Drive Up To 10 LSTTL Loads; (3)Low Power Consumption, 80-μA Max ICC; (4)Typical tpd = 13 ns; (5)±4-mA Output Drive at 5 V; (6)Low Input Current of 1 μA Max; (7)Dual 4-Bit Binary Counters With Individual Clocks; (8)Direct Clear for Each 4-Bit Counter; (9)Can Significantly Improve System Densities by Reducing Counter Package Count by 50 Percent.
Diagrams
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 SN54 |
Apex Tool Group (Formerly Cooper Tools) |
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SN54/74LS161A |
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