TC74AC240F

The TC74AC240F belongs to the TC74AC240 and 244 family which are advanced high speed CMOS OCTAL BUS BUFFERs fabricated with silicon gate and double - layer metal wiring CZMOS technology. They achieve the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. The 74AC240 is an inverting 3 - state buffer while the 74AC244 is non-inverting. Both devices have two active -low output enables. These devices are designed to be used in such applications as 3 - state memory address drivers. All inputs are equipped with protection circuits against static discharge or transient excess voltage.

The features of TC74AC240F can be summarized as (1)high speed: tpd = 4.0ns(typ.) at VCC =5V; (2)low power dissipation: lCC = 8A(Max.) at Ta = 25°C; (3)high noise immunity VNIH =VNIL=28% VCC(min.); (4)symmetrical output impedance: |IOH| = IOL=24mA(MIN.) capability of driving 50 transmission lines; (5)balanced propagation delays: tpLH=tpHL; (6)wide operating voltage range: VCC (opr) =2V~5.5V; (7)pin and function compatible with 74F240/244 .

The absolute maximum ratings of TC74AC240F are (1)supply voltage range VCC: -0.5~7.0V; (2)DC input voltage VIN: -0.5~VCC+0.5V; (3)DC output voltage VOUT: -0.5~VCC+0.5V; (4)input diode current IK: ±20 mA; (5)output diode current IOK: ±50 mA; (6)DC output current IOUT: ±50 mA; (7)DC VCC/ground current ICC: ±200 mA; (8)power dissipation PD: 500(DIP)/180 (SOPFTSSOP) mW; (9)storage temperature Tstg: - 65~150°C.