Octal Buffers / Line Drivers with 3-state Outputs
Description
HD74LVC540A
Octal Buffers / Line Drivers with 3-state Outputs
ADE-205-114B(Z) 3rd Edition December 1996 Description
The HD74LVC540A has eight inverter drivers with three state outputs in a 20 pin package.
When G1 and G2 is low level, this drivers set up output is enable.
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 G1 L L H X H: L: X: Z: High level Low level Immaterial High impedance G2 L L X H A L H X X Output Y H L Z Z
HD74LVC540A
Pin Arrangement
G1 1 A1 A2 2 3
20 VCC 19 G2 18 Y1 17 Y2 16 Y3 15 Y4 14 Y5 13 Y6 12 Y7 11 Y8
A3 4 A4 A5 A6 5 6 7
A7 8 A8 9 GND 10
(Top view)
2
HD74LVC540A
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 °C VO = –0.
5 V VO = VCC+0.
5 V Output "H" or "L" Output "Z" or VCC:OFF VI = –0.
5 V Conditions
Note: The absolute maximum ratings are values which must not individually be exceeded, and furthermore, no two of which may be realized at the same time.
Recommended Operating Conditions
Item Supply voltage Symbol VCC Ratings 1.
5 to 5.
5 2.
0 to 5.
5 Input / output voltage VI VO 0 to 5.
5 0 to V CC 0 to 5.
5 Operating temperature Output current Ta I OH –40 to 85 –12 –24 I OL
*1 *2
Unit V V V V V °C mA mA mA mA ns/V
Conditions Data hold At operation G1, G2, A Output "H...
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