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HD74ALVCH16244

Hitachi Semiconductor
Part Number HD74ALVCH16244
Manufacturer Hitachi Semiconductor
Description 16-bit Buffers / Drivers with 3-state Outputs
Published Mar 23, 2005
Detailed Description HD74ALVCH16244 16-bit Buffers / Drivers with 3-state Outputs ADE-205-133C (Z) 4th. Edition December 1999 Description Th...
Datasheet PDF File HD74ALVCH16244 PDF File

HD74ALVCH16244
HD74ALVCH16244


Overview
HD74ALVCH16244 16-bit Buffers / Drivers with 3-state Outputs ADE-205-133C (Z) 4th.
Edition December 1999 Description The HD74ALVCH16244 is designed specifically to improve both the performance and density of three state memory address drivers, clock drivers, and bus oriented receivers and transmitters.
The device can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer.
It provides true outputs and symmetrical OE (active-low output-enable) inputs.
Active bus hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
Features • VCC = 2.
3 V to 3.
6 V • 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) • Bus hold on data inputs eliminates the need for external pullup / pulldown resistors Function Table Inputs OE L L H H : High level L : Low level X : Immaterial Z : High impedance A H L X H L Z Output Y HD74ALVCH16244 Pin Arrangement 1OE 1 1Y1 2 1Y2 3 GND 4 1Y3 5 1Y4 6 VCC 7 2Y1 8 2Y2 9 GND 10 2Y3 11 2Y4 12 3Y1 13 3Y2 14 GND 15 3Y3 16 3Y4 17 VCC 18 4Y1 19 4Y2 20 GND 21 4Y3 22 4Y4 23 4OE 24 48 2OE 47 1A1 46 1A2 45 GND 44 1A3 43 1A4 42 VCC 41 2A1 40 2A2 39 GND 38 2A3 37 2A4 36 3A1 35 3A2 34 GND 33 3A3 32 3A4 31 VCC 30 4A1 29 4A2 28 GND 27 4A3 26 4A4 25 3OE (Top view) 2 HD74ALVCH16244 Absolute Maximum Ratings Item Supply voltage Input voltage *1 *1, 2 Symbol VCC VI VO I IK I OK IO I CC or IGND PT Tstg Ratings –0.
5 to 4.
6 –0.
5 to 4.
6 –0.
5 to VCC +0.
5 –50 ±50 ±50 ±100 0.
85 –65 to 150 Unit V V V mA mA mA mA W °C Conditions Output voltage Input clamp current Output clamp current Continuous output current VCC, GND current / pin Maximum power dissipation at Ta = 55°C (in still air) *3 Storage temperature Notes: VI < 0 VO < 0 or VO > VCC VO = 0 to VCC TSSOP Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device.
These are stress ratings only, and functional operation of the device at these or any oth...


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