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Hitachi Semiconductor - 18-bit Universal Bus Driver with 3-state Outputs

Numéro de référence HD74ALVC16835
Description 18-bit Universal Bus Driver with 3-state Outputs
Fabricant Hitachi Semiconductor 
Logo Hitachi Semiconductor 





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HD74ALVC16835 fiche technique
HD74ALVC16835
18-bit Universal Bus Driver with 3-state Outputs
ADE-205-192E (Z)
Preliminary
6th. Edition
January 1999
Description
The HD74ALVC16835 is an 18-bit universal bus driver designed for 2.3 V to 3.6 V VCC operation.
Data flow from A to Y is controlled by output enable (OE). The device operates in the transparent mode
when the latch enable (LE) input is high. The A data is latched if the clock (CLK) input is held at a high or
low logic level. If LE is low, the A data is stored in the latch/flip flop on the low to high transition of the
CLK. When OE is high, the outputs are in the high impedance state.
To ensure the high impedance state during power up or power down, OE should be tied to VCC through a
pullup registor; the minimum value of the registor is determined by the current sinking capability of the
driver.
Features
Meets “PC SDRAM registered DIMM design support document, Rev. 1.2”
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)
High output current ±24 mA (@VCC = 3.0 V)

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