SN74ALVCF162834 - 3.3-V CMOS 18-Bit Universal Bus Driver with 3-State Outputs

This 18-bit universal bus driver is designed for 2.3-V to 3.6-V V_CC operation.

Data flow from A to Y is controlled by the output-enable (OE)\ input. The device operates in the transparent mode when the latch-enable (LE)\ input is low. When LE\ is high, the A data is latched if the clock (CLK) input is held at a high or low logic level. If LE\ is high, 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.

The ALVCF162834 has series damping resistors in the device output structure that reduce switching noise in 128-MB and 256-MB SDRAM modules. Designed with a drive capability of ±18 mA, this device is a midway drive between the ALVC162834 (±12 mA) and ALVC16834 (±24 mA).

The SN74ALVCF162834 is a faster version of the SN74ALVC162834. It is suitable for PC133 applications, particularly for SDRAM modules clocked at 133 MHz.

To ensure the high-impedance state during power up or power down, OE\ should be tied to V_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Products containing the "SN74ALVCF162834" keyword are: SN74ALVCF162834DL , SN74ALVCF162834DL , SN74ALVCF162834GR , SN74ALVCF162834GR , SN74ALVCF162834GRE4 , SN74ALVCF162834LR , SN74ALVCF162834LR , SN74ALVCF162834VR , SN74ALVCF162834VR

• Member of the Texas Instruments Widebus™ Family
• Ideal for Use in PC133 Register DIMM
• Typical Output Skew . . . <250 ps
• V_CC = 3.3 V ± 0.3 V . . . Normal Range
• V_CC = 2.7 V to 3.6 V . . . Extended Range
• V_CC = 2.5 V ± 0.2 V
• Rail-to-Rail Output Swing for Increased Noise Margin
• Balanced Output Drivers . . . ±18 mA
• Low Switching Noise
• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
• ESD Protection Exceeds JESD 22
  • 2000-V Human-Body Model (A114-A)
  • 200-V Machine Model (A115-A)
  • 1000-V Charged-Device Model (C101)

Widebus is a trademark of Texas Instruments.