8-Bit PIPO Shift Register with Asynchronousclear

The TC74AC299 is an advanced high speed CMOS 8-BIT PIPO SHIFT REGISTER fabricated with silicon gate and double-layer metal wiring C2MOS technology.
It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation.
It has a four modes (HOLD, SHIFT LEFT, SHIFT RIGHT and LOAD DATA) controlled by the two selection inputs (S0, S1).
When one or both enable ( 1G , 2G ) are high, the eight I/O outputs are forced to the high-impedance state; however, sequential operation or clearing of the register is not affected.
All inputs are equipped with protection circuits against static discharge or transient excess voltage.

FEATUREs (Note 1)(Note 2)
• High speed: fmax = 150 MHz (typ.) at VCC = 5 V
• Low power dissipation: ICC = 8 μA (max) at Ta = 25°C
• High noise immunity: VNIH = VNIL = 28% VCC (min)
• Symmetrical output impedance: |IOH| = IOL = 24 mA (min)
                                                      Capability of driving 50 Ω
                                                      tansmission lines.
• Balanced propagation delays: tpLH ∼ − tpHL
• Wide operating voltage range: VCC (opr) = 2 to 5.5 V
• Pin and function compatible with 74F299