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MC74HC393A Datasheet(PDF) 1 Page - ON Semiconductor |
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MC74HC393A Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 8 page © Semiconductor Components Industries, LLC, 2000 March, 2000 – Rev. 2 1 Publication Order Number: MC74HC393A/D MC74HC393A Dual 4-Stage Binary Ripple Counter High–Performance Silicon–Gate CMOS The MC74HC393A is identical in pinout to the LS393. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. This device consists of two independent 4–bit binary ripple counters with parallel outputs from each counter stage. A ÷ 256 counter can be obtained by cascading the two binary counters. Internal flip–flops are triggered by high–to–low transitions of the clock input. Reset for the counters is asynchronous and active–high. State changes of the Q outputs do not occur simultaneously because of internal ripple delays. Therefore, decoded output signals are subject to decoding spikes and should not be used as clocks or as strobes except when gated with the Clock of the HC393A. • Output Drive Capability: 10 LSTTL Loads • Outputs Directly Interface to CMOS, NMOS, and TTL • Operating Voltage Range: 2 to 6 V • Low Input Current: 1 µA • High Noise Immunity Characteristic of CMOS Devices • In Compliance with the Requirements Defined by JEDEC Standard No. 7A • Chip Complexity: 236 FETs or 59 Equivalent Gates LOGIC DIAGRAM Q1 Q2 Q3 Q4 CLOCK RESET 1, 13 2, 12 3, 11 4, 10 5, 9 6, 8 PIN 14 = VCC PIN 7 = GND BINARY COUNTER FUNCTION TABLE Inputs Clock Reset Outputs XH L H L No Change L L No Change L No Change L Advance to Next State Device Package Shipping ORDERING INFORMATION MC74HC393AN PDIP–14 2000 / Box MC74HC393AD SOIC–14 http://onsemi.com 55 / Rail MC74HC393ADR2 SOIC–14 2500 / Reel MARKING DIAGRAMS A = Assembly Location WL or L = Wafer Lot YY or Y = Year WW or W = Work Week MC74HC393ADT TSSOP–14 96 / Rail MC74HC393ADTR2 TSSOP–14 2500 / Reel TSSOP–14 DT SUFFIX CASE 948G HC 393A ALYW 1 14 1 14 PDIP–14 N SUFFIX CASE 646 MC74HC393AN AWLYYWW SOIC–14 D SUFFIX CASE 751A 1 14 HC393A AWLYWW PIN ASSIGNMENT 11 12 13 14 8 9 10 5 4 3 2 1 7 6 Q2b Q1b RESET b CLOCK b VCC Q4b Q3b Q2a Q1a RESET a CLOCK a GND Q3a Q4a |
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