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BUY HCF4099 https://www.utsource.net/itm/p/173842.html
8-BIT ADDRESSABLE LATCH
Description: HCF4099 is a quad 2-input NAND Schmitt trigger. Features: Wide supply voltage range: 2V to 6V High noise immunity: 0.45V (typical) at VDD = 5V Low power consumption: 0.4渭A (typical) at VDD = 5V Low input current: 1渭A (typical) Low output saturation voltage: 0.4V (typical) at VDD = 5V High speed: tpd = 10ns (typical) at VDD = 5V High noise immunity: 0.45V (typical) at VDD = 5V Outputs can be connected directly to CMOS, NMOS, and TTL Outputs source/sink up to 20mA Applications: Pulse generation Clock and timing circuits Interface circuits Signal switching circuits Waveform generation circuits Digital logic systems (For reference only)