This is an interface IC for a 5V smart card. It works as a bidirectional signal buffer between a smart card and a controller. Also, it supplies 5V power to a smart card. With an electrostatic breakdown voltage of more than ±6000V, it protects the card contact pins.
The BD8919FV is a 5 V smart‑card interface IC that provides a bidirectional signal buffer between a smart card and a controller while also supplying power to the card. It includes protection features such as short‑circuit and electrostatic discharge protection for the card contact pins.
The document lists electrical characteristics, pin descriptions, package dimensions, recommended crystal frequencies, and ordering information for the BD8918/BD8919 family, helping designers integrate the device into CLASS A and B‑CAS smart‑card applications.
| Operating Voltage (VDD) | 2.7 V‑5.5 V |
|---|---|
| Package Type | SOP16 (also SSOP‑B16 for FV versions) |
| Recommended Crystal Frequency | 8 MHz for BD8918F/FV, 16 MHz for BD8919F/FV |
| Over‑current Protection | Built‑in over‑current protection for card power source |
It is an interface IC for a 5 V smart card that acts as a bidirectional signal buffer and supplies power to the card.
A 16 MHz crystal is recommended for the BD8919FV version.
It provides short‑circuit protection for all contact pins and an electrostatic breakdown voltage of over +6000 V.
Power is supplied via the VDD and VDDP pins.