FEATURES

· Member of the Texas Instruments Widebus?

Family

· Ideal for Use in PC133 Register DIMM

· Typical Output Skew . . . <250 ps

· VCC = 3.3 V ± 0.3 V . . . Normal Range

· VCC = 2.7 V to 3.6 V . . . Extended Range

· VCC = 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)

DESCRIPTION/ORDERING INFORMATION

This 18-bit universal bus driver is designed for

2.3-V to 3.6-V VCC 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 VCC through a pullup

resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.