The TC74VCX16543FT is a 16-bit registered transceiver from Toshiba Corporation. It is designed for use in 1.8-V, 2.5-V or 3.3-V systems and achieves high-speed operation while maintaining low power dissipation. The device also has overvoltage tolerant inputs and outputs up to 3.6 V. The TC74VCX16543FT can be used as two 8-bit transceivers or one 16-bit transceiver. Separate latch-enable (LEAB or LEBA) and output-enable (OEAB or OEBA) inputs are provided for each register to allow independent control in either direction of data flow. The A-to-B enable (CEAB) input must be low in order to enter data from A or to output data from B. If CEAB is low and LEAB is low, the A-to-B latches are transparent; a subsequent low-to-high transition of LEAB puts the A latches in the storage mode. With CEAB and OEAB both low, the 3-state B outputs are active and reflect the data present at the output of the A latches. Data flow from B to A is similar but requires using the CEBA, LEBA, and OEAB inputs. When the OE input is high, the outputs are in a high-impedance state. This device is designed for use with 3-state memory address drivers, etc. All inputs are equipped with protection circuits against static discharge.
The TC74VCX16543FT is a low‑voltage 16‑bit registered transceiver designed for 1.8‑V, 2.5‑V or 3.3‑V systems. It offers over‑voltage‑tolerant inputs and outputs up to 3.6 V, high‑speed operation, and bidirectional data flow with independent latch control.
The document lists absolute maximum ratings, operating ranges, detailed DC and AC electrical characteristics, pin assignments, truth tables, system diagrams, and mechanical data such as package dimensions and weight. It also includes usage restrictions and compliance notes from Toshiba.
| Supply voltage (absolute max) | 0.5 V to 4.6 V |
|---|---|
| Operating voltage range | 1.8 V to 3.6 V |
| Output current (typical) | +18 mA (min) |
| Package type | TSSOP56 |
| Weight | 0.25 g (typ.) |
The device can tolerate a supply voltage up to 4.6 V.
It operates from –40 °C to 85 °C.
It is supplied in a TSSOP56 package.
The recommended operating voltage is 1.8 V to 3.6 V.