Counter/Divider Dual 4-Bit Binary UP 14-Pin SOL

The TC74HC393 is a high speed CMOS 4-BIT BINARY COUNTER fabricated with silicon gate C²MOS technology. It achieves the high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation. It contains two independent counter circuits in one package, so that counting or frequency division of eight binary bits can be achieved with one IC. This device changes state on the negative going transition of the CK\ pulse. The counter can be reset to “0” (QA to QD = “L”) by a high at the CLR input regardless of other inputs. All inputs are equipped with protection circuits against static discharge or transient excess voltage.

• High speed: fmax = 72 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)
• Output drive capability: 10 LSTTL loads
• Symmetrical output impedance: |Ioh| = Iol = 4 mA (min)
• Balanced propagation delays: tpLH = tpHL
• Wide operating voltage range: Vcc (opr) = 2 to 6 V
• Pin and function compatible with 74LS393