SN74ALVCH162827 20-Bit Buffer/Driver With 3-State Outputs |

SN74ALVCH162827 (ACTIVE) 20-Bit Buffer/Driver With 3-State Outputs

20-Bit Buffer/Driver With 3-State Outputs - SN74ALVCH162827


This 20-bit noninverting buffer/driver is designed for 1.65-V to 3.6-V VCC operation.

The SN74ALVCH162827 is composed of two 10-bit sections with separate output-enable signals. For either 10-bit buffer section, the two output-enable (1OE1\ and 1OE2\ or 2OE1\ and 2OE2\) inputs must both be low for the corresponding Y outputs to be active. If either output-enable input is high, the outputs of that 10-bit buffer section are in the high-impedance state.

The outputs, which are designed to sink up to 12 mA, include equivalent 26- resistors to reduce overshoot and undershoot.

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.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.


  • Member of the Texas Instruments Widebus™ Family
  • Output Ports Have Equivalent 26- Series Resistors, So No External Resistors Are Required
  • Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
  • Latch-Up Performance Exceeds 250 mA Per JESD 17
  • 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 Incorporated.


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Part number Order Technology Family VCC (Min) (V) VCC (Max) (V) Channels (#) IOL (Max) (mA) IOH (Max) (mA) ICC (uA) Input type Output type Features Data rate (Mbps) Rating Operating temperature range (C) Package Group
SN74ALVCH162827 Order now ALVC     1.65     3.6     20     12     -12     40     Standard CMOS     3-State     Balanced outputs
Very high speed (tpd 5-10ns)
Over-voltage tolerant inputs
Damping resistors
200     Catalog     -40 to 85     SSOP | 56
TSSOP | 56
TVSOP | 56