Part # M74HC161 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: Synchronous presettable 4-bit counter

Part Details:

M74HC161 SYNCHRONOUS PRESETTABLE 4-BIT COUNTER s HIGH SPEED : fMAX = 62 MHz (TYP.) at VCC = 6V s LOW POWER DISSIPATION:ICC =4µA(MAX.) at TA=25°C s HIGH NOISE IMMUNITY:VNIH = VNIL = 28 % VCC (MIN.) s SYMMETRICAL OUTPUT IMPEDANCE: DIP SOP TSSOP |IOH| = IOL = 4mA (MIN) s BALANCED PROPAGATION DELAYS:tPLH tPHL ORDER CODES s WIDE OPERATING VOLTAGE RANGE: PACKAGE TUBE T & R VCC (OPR) = 2V to 6V DIP M74HC161B1R s PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 161 SOP M74HC161M1R M74HC161RM13TR TSSOP M74HC161TTR DESCRIPTIONThe M74HC161 is an high speed CMOS Two enable inputs (TE and PE) and CARRY SYNCHRONOUS 4-BIT BINARY output are provided to enable easy cascading of PRESETTABLE COUNTER fabricated with silicon counters, which facilities easy implementation of gate C2MOS technology. N-bit counters without using external gates. The CLOCK input is active on the rising edge. All inputs are equipped with protection circuits Both LOAD and CLEAR inputs are active LOW. against static discharge and transient excess Presetting is synchronous on the rising edge of voltage. the clock, the function is cleared asynchronously. PIN CONNECTION AND IEC LOGIC SYMBOLS July 2001 1/12 M74HC161 INPUT AND OUTPUT EQUIVALENT CIRCUIT

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M74HC161.pdf Datasheet