TC74HC595AF(EL,F)

The TC74HC595A is a high speed 8-BIT SHIFT REGISTER/LATCH fabricated with silicon gate C²MOS technology. It achieve the high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation. The TC74HC595A contains an 8-bit static shift register which feeds an 8-bit storage register. Shift operation is accomplished on the positive going transition of the SCK input. The output register is loaded with the contents of the shift register on the positive going transition of the RCK input. Since RCK and SCK signal are independent, parallel outputs can be held stable during the shift operation. And, since the parallel outputs are 3-state, it can be directly connected to 8-bit bus. This register can be used in serial-to-parallel conversion, data receivers, etc. All inputs are equipped with protection circuits against static discharge or transient excess voltage.

Applications

• serial-to-parallel conversion
• data receivers

Key features

• High speed: fmax = 55 MHz (typ.) at VCC = 5 V
• Low power dissipation: Icc = 4 μA (max) at Ta = 25°C
• High noise immunity: ΔVNIH = VNIL = 28% VCC (min)
• Output drive capability: 15 LSTTL loads for QA to QH; 10 LSTTL loads for QH’
• Symmetrical output impedance: |IOH| = IOL = 6 mA (min) For QA to QH; |IOH| = IOL = 4 mA (min) For QH’
• Balanced propagation delays: tpLH ≈ tpHL
• Wide operating voltage range: VCC(opr) = 2 to 6 V
• Pin and function compatible with 74LS595