M74HC161

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.) t(ss SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) ucs BALANCED PROPAGATION DELAYS: dtPLH ≅ tPHL ros WIDE OPERATING VOLTAGE RANGE: PVCC (OPR) = 2V to 6V s PIN AND FUNCTION COMPATIBLE WITH te74 SERIES 161 oleDESCRIPTION sThe M74HC161 is an high speed CMOS bSYNCHRONOUS 4-BIT BINARY OPRESETTABLE COUNTER fabricated with silicon -gate C2MOS technology. t(s)The CLOCK input is active on the rising edge. Both LOAD and CLEAR inputs are active LOW. cPresetting is synchronous on the rising edge of uthe clock, the function is cleared asynchronously. DIP SOP TSSOP ORDER CODES PACKAGE TUBE DIP SOP TSSOP M74HC161B1R M74HC161M1R T&R M74HC161RM13TR M74HC161TTR Two enable inputs (TE and PE) and CARRY output are provided to enable easy cascading of counters, which facilities easy implementation of N-bit counters without using external gates. All inputs are equipped with protection circuits against static discharge and transient excess voltage. Obsolete ProdPIN CONNECTION AND IEC LOGIC SYMBOLS July 2001 1/12 M74HC161 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL NAME AND FUNCTION 1 CLEAR Asynchronous Master Reset 2 CLOCK Clock Input (LOW to HIGH, Edge-triggered) 3, 4, 5, 6 A, B, C, D Data Inputs 7 PE Count Enable Input 10 TE Coun...