INTEGRATED UART AND ±15kV ESD-PROTECTED RS-232 TRANSCEIVER SAVES SPACE, POWER, AND µC I/O PINS
Note to Editors: The MAX3110E is a significant new product. It is the industry's first integrated UART and RS-232 transceiver. It saves space not only through integration but also through its I™/MICROWIRE™-compatible µC interface, which reduces pin count and saves µC I/O pins. The MAX3110E is ideal for space, power, and cost-constrained RS-232 applications.
SUNNYVALE, CA-June 21, 1999-Maxim Integrated Products introduces the MAX3110E/MAX3111E, which combine a full-featured universal asynchronous receiver/transmitter (UART) with a ±15kV ESD-protected RS-232 dual transceiver and integrated charge-pump capacitors into a single 28-pin SO package. The MAX3110E/MAX3111E save additional board space and microcontroller I/O pins by featuring an SPI/MICROWIRE-compatible serial interface.
A proprietary low-dropout output stage allows the two-driver/two-receiver interface to deliver true RS-232 performance down to VCC = +3V (+4.5V for MAX3110E), while consuming only 600µA. The receivers remain active in a hardware/software-invoked shutdown mode, allowing external devices to be monitored while consuming only 10µA supply current. Each device is guaranteed to operate at up to 230kbps, while maintaining true EIA/TIA-232 output voltage levels.
The MAX3110E/MAX3111E's UART includes a crystal oscillator and baud-rate generator with software-programmable divider ratios for all common baud rates from 300baud to 230kbaud. The UART features an eight-word-deep receive FIFO that minimizes processor overhead and provides a flexible interrupt with four maskable sources. Two control lines are included for hardware handshaking: one input and one output.
The MAX3110E/MAX3111E are available in 28-pin SO and DIP packages with prices starting from $4.73 (1000-up, FOB USA).
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