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HD74LVCZ244A

Hitachi Semiconductor
Part Number HD74LVCZ244A
Manufacturer Hitachi Semiconductor
Description Octal Buffers / Line Drivers with 3-state Outputs
Published Mar 23, 2005
Detailed Description HD74LVCZ244A Octal Buffers / Line Drivers with 3–state Outputs ADE-205-230A (Z) 2nd. Edition February 1999 Description ...
Datasheet PDF File HD74LVCZ244A PDF File

HD74LVCZ244A
HD74LVCZ244A

Overview
HD74LVCZ244A Octal Buffers / Line Drivers with 3–state Outputs ADE-205-230A (Z) 2nd.
Edition February 1999 Description The HD74LVCZ244A has eight line drivers with three state outputs in a 20 pin package.
This device is a noninverting buffer and has two active low enables (1G and 2G).
Each enable independently controls four buffers.
When VCC is between 0 and 1.
5 V, the device is in the high impedance state during power up or power down.
Low voltage and high speed operation is suitable at battery drive product (note type personal computer) and low power consumption extends the life of a battery for long time operation.
Features • VCC = 2.
7 to 5.
5 V • All inputs VIH (Max) = 5.
5 V (@VCC = 0 to 5.
5 V) • All outputs VO (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 impedance state during power up and power down • Power off disables outputs, permitting live insertion • High output current ±24 mA (@V CC = 3.
0 to 5.
5 V) HD74LVCZ244A Function Table Inputs G H L L H : High level L : Low level X : Immaterial Z : High impedance A X H L Z H L Output Y Pin Arrangement 1G 1 1A1 2Y4 2 3 20 VCC 19 2G 18 1Y1 17 2A4 16 1Y2 15 2A3 14 1Y3 13 2A2 12 1Y4 11 2A1 1A2 4 2Y3 1A3 2Y2 1A4 2Y1 5 6 7 8 9 GND 10 (Top view) 2 HD74LVCZ244A Absolute Maximum Ratings Item Supply voltage Input voltage Output voltage Symbol VCC VI VO Ratings –0.
5 to 7.
0 –0.
5 to 7.
0 –0.
5 to 7.
0 –0.
5 to VCC+0.
5 Input diode current Output diode current Output current VCC, GND current Storage temperature I IK I OK IO I CC or IGND Tstg –50 –50 ±50 ±100 –65 to 150 mA mA mA mA °C Unit V V V Output “Z” or VCC : OFF Output “H” or “L” VI < 0 VO < 0 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 Input voltage Output voltage S...


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