TI SN74LVC573AQPWREP

SN74LVC573A-EP octal transparent D-type latch, designed for 2.7 V to 3.6 V VCC operation. The device features 3-state outputs designed to drive highly capacitive or relatively low-impedance loads, making it especially suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. When the latch enable (LE) input is high, the Q outputs follow the data (D) inputs; when LE goes low, the Q outputs latch the logic levels of the D inputs. The buffered output enable (OE) input can place all eight outputs in either a normal logic state (high or low logic level) 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 enhanced drive capability allow bus lines to be driven without interface or pull-up components. OE does not affect the internal operation of the latches; old data can be retained or new data can be entered while the outputs are in the high-impedance state. The device is fully specified for partial-powerdown applications using Ioff; the Ioff circuit disables the outputs, preventing damaging backflow current when the device is powered down. 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. Inputs can be driven by 3.3 V or 5 V devices, allowing this device to be used as a level translator in mixed 3.3 V/5 V system environments.

• Controlled baseline
• Single assembly/test site, single manufacturing site
• Extended temperature operating range: -40℃ to 125℃
• Enhanced Diminishing Manufacturing Sources (DMS) support
• Enhanced product change notification
• Qualification certification
• Operating voltage range: 2 V to 3.6 V
• Inputs accept up to 5.5 V
• Maximum tpd of 6.9 ns at 3.3 V
• Typical output ground bounce (VOLP) < 0.8 V at 3.3 V, 25℃
• Typical output VOH undershoot (VOHV) > 2 V at 3.3 V, 25℃
• Mixed-mode signal operation on all ports (5 V I/O voltage with 3.3 V VCC)
• Ioff supports partial power-down mode operation

• Buffer register
• I/O port
• Bidirectional bus driver
• Working register