HD74LVC245AT

The HD74LVC245AT has eight buffers with three state outputs in a 20 pin package. When (T/R) is high, data flows from the A inputs to the B outputs, and when (T / R) is low, data flows from the B inputs to the A outputs.A and B bus are separated by making enable input (OE) high level.

Features of the HD74LVC245AT are:(1)VCC = 2.0 V to 5.5 V;(2)all inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V);(3)all input outputs VI/O (Max.) = 5.5 V (@VCC = 0 V or output off state);(4)typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25);(5)typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25);(6)high output current ±24 mA (@VCC = 3.0 V to 5.5 V).

The absolute maximum ratings of the HD74LVC245AT can be summarized as:(1):the symbol is VCC,the parameter is supply voltage,the rating is -0.5 to 6.0,the unit is V;(2):the symbol is IIK,the parameter is input diode current,the rating is -50,the unit is mA;(3):the symbol is VI,the parameter is input voltage,the rating is -0.5 to 6.0,the unit is V;(4):the symbol is IOK,the parameter is output diode current,the rating is -50,the unit is mA;(5):the symbol is IOK,the parameter is output diode current,the rating is 50,the unit is mA;(6):the symbol is II/O,the parameter is output input/output voltage,the rating is -0.5 to Vcc+0.5,the unit is V;(7):the symbol is II/O,the parameter is output input/output voltage,the rating is -0.5 to 6.0,the unit is V;(8):the symbol is IGND,ICC,the parameter is DC VCC or GND current per supply pin,the rating is 100,the unit is mA;(9):the symbol is Io,the parameter is output current,the rating is ±50,the unit is mA;(10):the symbol is Tstg,the parameter is storage temperature range,the rating is -65 to +150,the unit is .