MC74AC163: Synchronous Presettable Binary Counter

The MC74AC161/74ACT161 and MC74AC163/74ACT163 are high-speed synchronous modulo-16 binary counters. They are synchronously presettable for application in programmable dividers and have two types of 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.

Features
  • Synchronous Counting and Loading
  • High-Speed Synchronous Expansion
  • Typical Count Rate of 125 MHz
  • Outputs Source/Sink 24 mA
  • ACT161 and ACT163 Have TTL Compatible Inputs
  • These devices are available in Pb-free package(s). Specifications herein apply to both standard and Pb-free devices. Please see our website at www.onsemi.com for specific Pb-free orderable part numbers, or contact your local ON Semiconductor sales office or representative.
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
Synchronous Presettable Binary CounterMC74AC161/D (109kB)8
Package Drawings (1)
Document TitleDocument ID/SizeRevision
SOIC 16 LEAD751B-05 (38.2kB)K
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
MC74AC163DR2GActivePb-free Halide freeSOIC-16751B-051Tape and Reel2500$0.2267
Specifications
ProductTypeVCC Min (V)VCC Max (V)tpd Max (ns)PD Max (W)IO Max (mA)
MC74AC163DR2GCounter269.50.3524
Synchronous Presettable Binary Counter (109kB) MC74ACT163
SOIC 16 LEAD MC14504B