The 73S8009R is a low‑cost level‑shifter IC that provides a single smart‑card (ICC) interface between a host microcontroller and ISO‑7816/EMV cards. It supports 5 V, 3 V and 1.8 V cards, includes an emergency deactivation sequencer, fault detection, and auxiliary I/O lines.
The device is offered in 20‑pin QFN and 28‑pin SO packages and is intended for applications such as set‑top‑box conditional access, SIM‑card readers, point‑of‑sale terminals and general‑purpose smart‑card readers. Electrical ratings, pin definitions and mechanical drawings are provided in the following sections.
| Supported card voltages | 5 V, 3 V, 1.8 V |
|---|---|
| Package options | 20‑pin QFN, 28‑pin SO |
| Maximum VDD supply voltage | -0.5 V to 4.0 VDC |
| Maximum VPC supply voltage | -0.5 V to 6.5 VDC |
| Operating temperature range | -40 °C to +85 °C |
| Card supply current (static load) | up to 90 mA |
| ESD protection (card interface) | ±6 kV |
It supports 5 V, 3 V and 1.8 V smart‑card voltages.
An ISO‑7816‑3 deactivation sequencer automatically disables the card signals and reports faults via an interrupt output.
The IC is offered in a 20‑pin QFN package and a 28‑pin SO package.
The device is rated for ambient temperatures from –40 °C to +85 °C.