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HD74LV245A

Hitachi Semiconductor
Part Number HD74LV245A
Manufacturer Hitachi Semiconductor
Description Octal Bus Transceivers with 3-state Outputs
Published Mar 23, 2005
Detailed Description HD74LV245A Octal Bus Transceivers with 3-state Outputs ADE-205-247 (Z) 1st Edition March 1999 Description The HD74LV245...
Datasheet PDF File HD74LV245A PDF File

HD74LV245A
HD74LV245A

Overview
HD74LV245A Octal Bus Transceivers with 3-state Outputs ADE-205-247 (Z) 1st Edition March 1999 Description The HD74LV245A has eight buffers with three-state outputs in a 20-pin package.
When DIR is high, data is transferred from the A inputs to the B outputs, and when DIR is low, data is transferred from the B inputs to the A outputs.
The A and B buses are separated by making the enable input (OE) high level.
Lowvoltage operation is suitable for battery-powered products (e.
g.
, notebook computers), and the low power consumption extends the battery life.
Features • • • • • • VCC = 2.
0 V to 5.
5 V operation All inputs VIH (Max.
) = 5.
5 V (@VCC = 0 V to 5.
5 V) All outputs VO (Max.
) = 5.
5 V (@VCC = 0 V) Typical VOL ground bounce < 0.
8 V (@VCC = 3.
3 V, Ta = 25°C) Typical VOH undershoot > 2.
3 V (@VCC = 3.
3 V, Ta = 25°C) Output current ±8 mA (@VCC = 3.
0 V to 3.
6 V), ±16 mA (@VCC = 4.
5 V to 5.
5 V) Function Table Inputs OE L L H Note: H: High level L: Low level X: Immaterial DIR L H X Operation B data to A bus A data to B bus Isolation HD74LV245A Pin Arrangement DIR 1 A1 A2 2 3 20 VCC 19 OE 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 B8 A3 4 A4 A5 A6 A7 A8 5 6 7 8 9 GND 10 (Top view) 2 HD74LV245A Absolute Maximum Ratings Item Supply voltage range Input voltage range* 1 1, 2 Symbol VCC VI VO Ratings –0.
5 to 7.
0 –0.
5 to 7.
0 –0.
5 to VCC + 0.
5 –0.
5 to 7.
0 Unit V V V Conditions Output voltage range* * Output: H or L VCC: OFF or Output: Z Input clamp current Output clamp current Continuous output current Continuous current through VCC or GND Maximum power dissipation at Ta = 25°C (in still air)*3 I IK I OK IO I CC or IGND PT –20 ±50 ±35 ±70 835 757 mA mA mA mA mW VI < 0 VO < 0 or VO > VCC VO = 0 to VCC SOP TSSOP Storage temperature Tstg –65 to 150 °C Notes: 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.
.
1.
The input and output voltage ratings may be exceed...


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