Synchronous Presettable 4-Bit Binary Up/Down Counter with Output Register (multiplexed 3-state outputs)

The TC74HC697A is high speed CMOS UP/DOWN COUNTERS fabricated with silicon gate C2MOS technology.
It achieve the high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation.

FEATUREs
• High speed: fmax = 38 MHz (typ.) at VCC = 5 V
• Low power dissipation: ICC = 4 μA (max) at Ta = 25°C
• High noise immunity: VNIH = VNIL = 28% VCC (min)
• Outputs drive capability: 15 LSTTL loads for QA~QD
                                          10 LSTTL loads for RCO
• Symmetrical output impedance:
    |IOH| = IOL = 6 mA (min) for QA~QD
    |IOH| = IOL = 4 mA (min) for RCO
• Balanced propagation delays: tpLH ∼ − tpHL
• Wide operating voltage range: VCC (opr) = 2~6 V
• Pin and function compatible with 74LS697