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MC74HCT163AN
Presetable counter
SEMICONDUCTOR TECHNICAL DATA-
High–Performance Silicon–Gate CMOSThe MC54/74HCT161A and HCT163A are identical in pinout to the LS161A
and LS163A. These devices may be used as level converters for interfacing
TTL or NMOS outputs to high speed CMOS inputs.
The HCT161A and HCT163A are programmable 4–bit binary counters with
asynchronous and synchronous reset, respectively. Output Drive Capability: 10 LSTTL Loads TTL, NMOS Compatible Input Levels Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 4.5 to 5.5 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: 200 FET s or 50 Equivalent Gates
LOGIC DIAGRAMReset
Preset
Data
Inputs
Pin 16 = VCC
Pin 8 = GND 6 5 4 3
Clock 2
Reset
Load
Enable P
Enable T
BCD or Binary
Outputs
Count
Enables
Ripple
Carry Out
FUNCTION TABLEH = High Level; L = Low Level; X = Don’t Care
* = HCT163A only. HCT161A is an “Asynchronous–Reset” device.
Pinout: 16–Lead Package (Top View)VCC
RCO* Q0 Q1 Q2 Q3
Enable Load
Reset Clock P0 P1 P2 P3 Enable
GND
* RCO = Ripple Carry Out
