IN74HC161A
feature parallel Load, asynchronous Reset, a Carry Output for cascading and count-enable controls. The IN74HC161A is binary counter with asynchronous Reset.
- Outputs Directly Interface to CMOS, NMOS, and TTL
- Operating Voltage Range: 2.0 to 6.0 V
- Low Input Current: 1.0 µA
- High Noise Immunity Characteristic of CMOS Devices
LOGIC DIAGRAM
ORDERING INFORMATION IN74HC161AN Plastic IN74HC161AD SOIC TA = -55° to 125° C for all packages
PIN ASSIGNMENT
PIN 16 =VCC PIN 8 = GND
FUNCTION TABLE
Inputs Reset L H H H H H Load X L Enable P X X X L H X Enable T X X L X H X Clock X Q0 L P0 Outputs Q1 L P1 Q2 L P2 Q3 L P3 Function Reset to “0” Preset Data No count No count Count No count w w w
.d e e h s a t a
X=don’t care P0,P1,P2,P3 = logic level of Data inputs Ripple Carry Out = Enable T
- Q0
- Q1
- Q2
- Q3
. u t4 m o c
No change No change Count up No change
..
MAXIMUM RATINGS-
Symbol VCC VIN VOUT IIN IOUT ICC PD Tstg TL
- Parameter DC Supply Voltage...
