器件名称:
M74HC163B1R
功能描述:
SYNCHRONOUS PRESETTABLE 4-BIT COUNTER
文件大小:
898.76KB 共12页
简 介:
M74HC163 SYNCHRONOUS PRESETTABLE 4-BIT COUNTER s s s s s s s HIGH SPEED : fMAX = 62 MHz (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC =4A(MAX.) at TA=25°C HIGH NOISE IMMUNITY: VNIH = V NIL = 28 % VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) BALANCED PROPAGATION DELAYS: tPLH tPHL WIDE OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 163 DIP SOP TSSOP ORDER CODES PACKAGE DIP SOP TSSOP TUBE M74HC163B1R M74HC163M1R T&R M74HC163RM13TR M74HC163TTR DESCRIPTION The M74HC163 is an high speed CMOS SYNCHRONOUS 4 BIT BINARY PRESETTABLE COUNTER fabricated with silicon gate C2MOS technology. The CLOCK input is active on the rising edge. Both LOAD and CLEAR inputs are active LOW. Presetting is synchronous on the rising edge of the clock, the function is synchronous to the CLOCK. 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. PIN CONNECTION AND IEC LOGIC SYMBOLS July 2001 1/12 M74HC163 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No 1 2 3, 4, 5, 6 7 10 9 14, 13, 12, 11 15 8 16 SYMBOL CLEAR CLOCK A, B, C, D PE TE LOAD QA to QD CARRY GND Vcc NAME AND FUNCTION Asynchronous Master Reset Clock Input (LOW to HIGH, Edge-triggered) Data Inputs Count Enable Input Count Enable ……
