SN54-74LS390 ON Semiconductor, SN54-74LS390 Datasheet
SN54-74LS390
Related parts for SN54-74LS390
SN54-74LS390 Summary of contents
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... DUAL DECADE COUNTER; DUAL 4-STAGE BINARY COUNTER The SN54 / 74LS390 and SN54 / 74LS393 each contain a pair of high-speed 4-stage ripple counters. Each half of the LS390 is partitioned into a divide-by-two section and a divide-by five section, with a separate clock input for each section. The two sections can be connected to count in the 8.4.2.1 BCD code or they can count in a biquinary sequence to provide a square wave (50% duty cycle) at the final output ...
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... The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74) b) Temperature Ranges. FUNCTIONAL DESCRIPTION Each half of the SN54 / 74LS393 operates in the Modulo 16 binary sequence, as indicated in the 16 Truth Table. The first flip-flop is triggered by HIGH-to-LOW transitions of the CP input signal. Each of the other flip-flops is triggered by a HIGH-to-LOW transition of the Q output of the preceding flip-flop ...
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... OUTPUTS COUNT SN54 / 74LS390 10 (50 TRUTH TABLE (Input OUTPUTS COUNT ...
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... SN54/74LS390 SN54/74LS393 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE Symbol Parameter V IH Input HIGH Voltage Input LOW Voltage Input LOW Voltage V IK Input Clamp Diode Voltage Output HIGH Voltage Output HIGH Voltage Output LOW Voltage ...
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... SN54/74LS390 SN54/74LS393 AC SETUP REQUIREMENTS ( 5.0 V) Symbol Parameter Clock Pulse Width LS393 Pulse Width LS390 Pulse Width LS390 Pulse Width LS390/393 t rec Recovery Time LS390/393 * & *The number of Clock Pulses required between t PHL and t PLH measurements can be determined from the appropriate Truth Table. ...