M74HC259B1R集成电路（IC）的锁存器规格书PDF中文资料

M74HC259B1R属于集成电路（IC）的锁存器。由意法半导体集团制造生产的M74HC259B1R锁存器锁存器是类似于触发器的基本数字存储设备，但是不同之处在于，在锁存使能（或类似命名）信号处于有效逻辑状态的任何时间，保持的逻辑状态都可以改变。“透明”锁存器还允许设备输出在锁存使能信号有效时反映输入的当前状态，而相反的是，状态仅在保持状态已固定时改变。

DESCRIPTION

The M74HC259 is an high speed CMOS 8 BIT ADDRESSABLE LATCH fabricated with silicon gate C2MOS technology.

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

■ HIGH SPEED :

tPD = 20 ns (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 259