www.DataSheet4U.com
HD74LVC240A
Octal Buffers / Line Drivers with 3-state Outputs
ADE-205-109B(Z) 3rd Edition December...
www.DataSheet4U.com
HD74LVC240A
Octal Buffers / Line Drivers with 3-state Outputs
ADE-205-109B(Z) 3rd Edition December 1996 Description
The HD74LVC240A has eight inverter drivers with three state outputs in a 20 pin package. This device is a inverting buffer and has two active low enables (1 G and 2G). Each enable independently controls four buffers. Low
voltage and high speed operation is suitable at the battery drive product (note type personal computer) and low power consumption extends the life of a battery for long time operation.
Features
VCC = 2.0 V to 5.5 V All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V) All outputs VOUT (Max.) = 5.5 V (@VCC = 0 V or output off state) Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C) Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C) High output current ±24 mA (@VCC = 3.0 V to 5.5 V)
Function Table
Inputs G H L L H: L: X: Z: High level Low level Immaterial High impedance A X H L Output Y Z L H
HD74LVC240A
Pin Arrangement
1G 1 1A1 2 2Y4 3 1A2 4 2Y3 5 1A3 6 2Y2 7 1A4 8 2Y1 9 GND 10
20 VCC 19 2G 18 1Y1 17 2A4 16 1Y2 15 2A3 14 1Y3 13 2A2 12 1Y4 11 2A1
(Top view)
Absolute Maximum Ratings
Item Supply
voltage Input diode current Input
voltage Output diode current Symbol VCC I IK VI I OK Ratings –0.5 to 6.0 –50 –0.5 to 6.0 –50 50 Output
voltage VO –0.5 to VCC +0.5 –0.5 to 6.0 Output current VCC, GND current / pin Storage temperature IO I CC or IGND Tstg ±50 100 –65 to +150 Unit V mA V mA mA V V mA mA °...