mc74ac161 ON Semiconductor, mc74ac161 Datasheet
mc74ac161
Available stocks
Related parts for mc74ac161
mc74ac161 Summary of contents
Page 1
... Count Enable inputs plus a Terminal Count output for versatility in forming synchronous multistage counters. The MC74AC161/74ACT161 has an asynchronous Master Reset input that overrides all other inputs and forces the outputs LOW. The MC74AC163/74ACT163 has a Synchronous Reset input that overrides counting and parallel loading and allows the outputs to be simultaneously reset on the rising edge of the clock ...
Page 2
... HIGH, CEP and CET permit counting when both are HIGH. Conversely, a LOW signal on either CEP or CET inhibits counting. The MC74AC161/ACT161 and MC74AC163/ACT163 use D−type edge−triggered flip−flops and changing the SR, PE, CEP and CET inputs when the either state does not cause errors, provided that the recommended setup and hold times, with respect to the rising edge of CP, are observed ...
Page 3
PE ′161 ′163 CEP CET ′163 ONLY CP CP ′161 ONLY ′161 SR ′163 Q 0 NOTE: This diagram is provided only for the understanding of logic operations and should not be used to ...
Page 4
RECOMMENDED OPERATING CONDITIONS Symbol V Supply Voltage Input Voltage, Output Voltage (Ref. to GND) IN OUT Input Rise and Fall Time (Note ′AC Devices except Schmitt Inputs Input Rise ...
Page 5
... PHL Propagation Delay t PHL *Voltage Range 3 3.3 V ±0.3 V. *Voltage Range 5 5.0 V ±0 CHARACTERISTICS (For Figures and Waveforms − See Section 3 of the ON Semiconductor FACT Data Book, DL138/D) Symbol Parameter Maximum Count f max Frequency Propagation Delay t PLH ...
Page 6
AC OPERATING REQUIREMENTS Symbol Parameter Setup Time, HIGH or LOW Hold Time, HIGH or LOW Setup Time, HIGH or LOW Hold Time, HIGH ...
Page 7
AC OPERATING REQUIREMENTS Symbol Parameter Setup Time, HIGH or LOW Hold Time, HIGH or LOW Setup Time, HIGH or LOW Hold Time, HIGH ...
Page 8
DC CHARACTERISTICS Symbol Parameter V Minimum High Level IH Input Voltage V Maximum Low Level IL Input Voltage V Minimum High Level OH Output Voltage V Maximum Low Level OL Output Voltage I Maximum Input IN Leakage Current DI Additional ...
Page 9
... Propagation Delay t PHL Propagation Delay t PHL *Voltage Range 5 5.0 V ±0 CHARACTERISTICS (For Figures and Waveforms − See Section 3 of the ON Semiconductor FACT Data Book, DL138/D) Symbol Parameter Maximum Count f max Frequency Propagation Delay t PLH (PE Input HIGH or LOW) ...
Page 10
AC OPERATING REQUIREMENTS Symbol Parameter Setup Time, HIGH or LOW Hold Time, HIGH or LOW Setup Time, HIGH or LOW Hold Time, HIGH ...
Page 11
AC OPERATING REQUIREMENTS Symbol Parameter Setup Time, HIGH or LOW Hold Time, HIGH or LOW Setup Time, HIGH or LOW Hold Time, HIGH ...
Page 12
... ORDERING INFORMATION Device MC74AC161N MC74ACT161N MC74AC161D MC74AC161DR2 MC74ACT161D MC74ACT161DR2 MC74AC161M MC74ACT161MEL MC74AC163N MC74ACT163N MC74AC163D MC74AC163DR2 MC74ACT163D MC74ACT163DR2 MC74AC163MEL MC74ACT163MEL Package PDIP−16 PDIP−16 SOIC−16 SOIC−16 SOIC−16 SOIC−16 EIAJ−16 EIAJ−16 PDIP−16 PDIP−16 SOIC−16 SOIC− ...
Page 13
0.25 (0.010) M −A− −T− SEATING PLANE 0.25 (0.010 PACKAGE DIMENSIONS PDIP−16 N ...
Page 14
VIEW 0.10 (0.004) 0.13 (0.005) M PACKAGE DIMENSIONS EIAJ−16 M SUFFIX 16 PIN PLASTIC EIAJ PACKAGE CASE966−01 ISSUE ...
Page 15
... USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 http://onsemi.com 15 ON Semiconductor Website: http://onsemi.com Order Literature: http://www.onsemi.com/litorder For additional information, please contact your local Sales Representative. MC74AC161/D ...