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Support Mixed-Mode Signal Operation

(5-V Input and Output Voltages With

3.3-V VCC)

Typical VOLP (Output Ground Bounce)

<0.8 V at VCC = 3.3 V, TA = 25°C

Support Unregulated Battery Operation

Down To 2.7 V

Buffered Clock and Direct-Clear Inputs

Individual Data Input to Each Flip-Flop

Ioff Supports Partial-Power-Down-Mode

Operation

Bus Hold on Data Inputs Eliminates the

Need for External Pullup/Pulldown

Resistors

Latch-Up Performance Exceeds 500 mA Per

JESD 17

ESD Protection Exceeds JESD 22

? 2000-V Human-Body Model (A114-A)

? 200-V Machine Model (A115-A)

description/ordering information

These octal D-type flip-flops are designed specifically for low-voltage (3.3-V) VCC operation, but with the

capability to provide a TTL interface to a 5-V system environment.

The ’LVTH273 devices are positive-edge-triggered flip-flops with a direct-clear input. Information at the data (D)

inputs meeting the setup-time requirements is transferred to the Q outputs on the positive-going

edge of the clock pulse. Clock triggering occurs at a particular voltage level and is not directly related to the

transition time of the positive-going pulse. When the clock (CLK) input is at either the high or low level, the

D-input signal has no effect at the output.