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具有三态输出的 16 位边沿 D 类触发器
Number of channels (#) 16
Technology Family LVC
Supply voltage (Min) (V) 2.7
Supply voltage (Max) (V) 3.6
Input type Standard CMOS
Output type 3-State
Clock Frequency (Max) (MHz) 100
IOL (Max) (mA) 24
IOH (Max) (mA) -24
ICC (Max) (uA) 40
Features Balanced outputs, Very high speed (tpd 5-10ns), Over-voltage tolerant inputs
  • Member of the Texas Instruments WidebusTM Family
  • EPICTM (Enhanced-Performance Implanted CMOS) Submicron Process
  • Typical VOLP (Output Ground Bounce)
    < 0.8 V at VCC = 3.3 V, TA = 25°C
  • Typical VOHV (Output VOH Undershoot)
    > 2 V at VCC = 3.3 V, TA = 25°C
  • Latch-Up Performance Exceeds 250 mA
    Per JEDEC Standard JESD-17
  • Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
  • Package Options Include Plastic 300-mil Shrink Small-Outline (DL) and Thin Shrink Small-Outline (DGG) Packages

    EPIC and Widebus are trademarks of Texas Instruments Incorporated.

This 16-bit edge-triggered D-type flip-flop is designed for 2.7-V to 3.6-V VCC operation.

The SN74LVC16374 is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. It can be used as two 8-bit flip-flops or one 16-bit flip-flop. On the positive transition of the clock (CLK) input, the Q outputs of the flip-flop take on the logic levels set up at the data (D) inputs.

A buffered output-enable (OE\) input can be used to place the eight outputs in either a normal logic state (high or low logic levels) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and the increased drive provide the capability to drive bus lines without need for interface or pullup components.

OE\ does not affect internal operations of the flip-flop. Old data can be retained or new data can be entered while 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 resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.

The SN74LVC16374 is characterized for operation from -40°C to 85°C.