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Part Number: HD74ALVC162835
Description: The HD74ALVC162835 is an 18-bit universal bus driver designed for 2.3 V to 3.6 V VCC operat...
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HD74ALVC162835
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General Description
HD74ALVC162835 General Description
The HD74ALVC162835 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 the output enable (OE). The device operates in the transparent mode when the latch enable (LE) is high. When LE is low, the A data is latched if the clock (CLK) input is held at a high or low logic level. If the LE is low, the A data is stored in the latch/flip flop on the low to high transition of 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.
All outputs, which are designed to sink up to 12 mA, include 26 resistors to reduce overshoot and undershoot.
HD74ALVC162835 Maximum Ratings
|
Item |
Symbol |
Ratings |
Unit |
Conditions |
| Supply voltage |
VCC |
0.5 to 4.6 |
V |
|
| Input voltage *1 |
VI |
0.5 to 4.6 |
V |
|
| Output voltage *1, 2 |
VO |
0.5 to VCC +0.5 |
V |
Output : H or L |
| Input clamp current |
IIK |
-50 |
mA |
VI<0 |
| Output clamp current |
IOK |
±50 |
mA |
VO<0 or VO >VCC |
| Continuous output current |
IO |
±50 |
mA |
VO = 0 to VCC |
| VCC, GND current / pin |
ICC or IGND |
±100 |
mA |
|
| Maximum power dissipation at Ta = 55°C (in still air)*3 |
PT |
1 |
W |
TSSOP |
| Storage temperature |
Tstg |
65 to 150 |
°C |
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 other conditions beyond those indicated under "recommended operating condition" is not implied. Exposure to absolutemaximum-rated conditions for extended periods may affect device reliability.
Notes: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp current ratings are observed.
2. The input and output positive-voltage ratings may be exceeded up to 4.6 V if the input and output clamp-current ratings are observed.
3. The maximum power dissipation is calculated using a junction temperature of 150°C and board trace length of 750 mils.
HD74ALVC162835 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 ±12 mA (@VCC = 3.0 V)
` All outputs have equivalent 26 series resistors, so no external resistors are required
` 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 ±12 mA (@VCC = 3.0 V)
` All outputs have equivalent 26 series resistors, so no external resistors are required
HD74ALVC162835 Connection Diagram
HD74ALVC162835
PDF/DataSheet Download
- Datasheet: HD74ALVC162835
- File Size: 66731 KB
- Manufacturer: HITACHI [Hitachi Semiconductor]
- Click here to Download
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