The MAX3311/MAX3313 are low-power, +5V EIA/TIA-232-compatible transceivers. Both devices have one transmitter and one receiver. The transceivers have a proprietary low-dropout transmitter output stage enabling RS-232-compatible operation from a +5V sup- ply with a single inverting charge pump. These devices require only three 0.1µF capacitors and will run at data rates up to 460kbps while maintaining RS-232-compati- ble output levels. The MAX3311 features a 1µA shutdown mode. In shut- down the device turns off the charge pump, pulls V- to ground, and the transmitter output is disabled. The MAX3313 features an INVALID output that asserts high when an active RS-232 cable signal is connected, sig- naling to the host that a peripheral is connected to the communication port.
The MAX3311 and MAX3313 are low‑power, +5 V EIA/TIA‑232‑compatible transceivers that integrate a single inverting charge‑pump to generate the required negative voltage. Each device contains one transmitter and one receiver and requires only three 0.1 µF capacitors. The MAX3311 includes a 1 µA shutdown mode, while the MAX3313 provides an INVALID output that signals when a valid RS‑232 level is present on the receiver input.
These transceivers are intended for use in digital cameras, PDAs, GPS units, POS terminals, telecommunications equipment, handy terminals, and set‑top boxes. They operate up to 460 kbps with a 3 kΩ load and 1000 pF capacitance, and they are offered in a 10‑pin uMAX package.
| Supply Current (typical) | 1 pA |
|---|---|
| Shutdown Supply Current (MAX3311) | 1‑10 pA |
| Output Voltage Low (VOL) | 0.4 V |
| Package Type | 10‑Pin uMAX |
| Transistor Count | 278 |
In shutdown mode the MAX3311 typically draws 1 pA of supply current.
The device is housed in a 10‑pin uMAX package.