M74HC4520 Dual 4 Bit Binary Counter

The M74HC4520 is an high speed CMOS DUAL BINARY COUNTER fabricated with silicon gate C2MOS technology.

It consists of two identical internally synchronous 4-stage counters. The counter stages are D-TYPE flip-flops having interchangeable CLOCK and ENABLE inputs for incrementing on either the positive-going or negative-going transition.

For single-unit operation the ENABLE input is maintained "high" and the counter advances on each positive-going transition of the CLOCK. The counters are cleared by high levels on their clear lines.

The counter can be cascaded in the ripple mode by connecting Q4 to the enable input of the subsequent counter while the clock input of the latter is held permanently low.

All inputs are equipped with protection circuits against static discharge and transient excess voltage

技术特性

HIGH SPEED :
- fMAX = 60 MHz (TYP.) at VCC = 6V
LOW POWER DISSIPATION:
- ICC =4µA(MAX.) at TA=25 °C
HIGH NOISE IMMUNITY:
- VNIH = VNIL = 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 4520

M74HC4520 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
M74HC4520TTR	Active		1000	TSSOP 16	Tape And Reel		M74HC4520TTR
M74HC4520RM13TR	Active		1000	SO-16	Tape And Reel		M74HC4520RM13TR
M74HC4520B1R	Active		1000	PDIP 16	Tube		M74HC4520B1R

DATASHEET

描述	版本	大小
M74HC4520 : DS2381: Dual 4 bit binary counter	1	357KB