Analog Devices Debuts ADM3312E/3307E Transceivers

Analog Devices Inc. (Norwood, MA) announced the new ADM3312E and ADM3307E transceivers. The ADM3312E is designed for palmtop computers, PDAs and other portable hand-held devices while the ADM3307E addresses the needs of mobile phone handsets and accessories as well as notebook PC peripherals.

The ADM3312E is a three-driver/three-receiver serial port transceiver that meets full EIA-232 standards while operating from a single power supply as low as +2.7V. A charge pump dc/dc converter is integrated on-chip, eliminating the need for dual power supplies. The dc/dc converter also contains a voltage tripler and voltage inverter for internally generating positive and negative supplies from the power supply. It operates in a green idle mode, where the charge pump oscillator is gated on and off to maintain an output voltage to ±7.25V, regardless of the load conditions. It features an ESD protection of up to ±15kV on all I/O lines. The ADM3312E is available in a 24-lead TSSOP package as well as a space-saving 32-lead LFCSP package.

Operating from a single supply as low as +2.7V, the ADM3307E is a five-driver/three-receiver serial port transceiver that meets EIA-232 standards. It also features an on-board, charge pump dc/dc converter similar to the ADM3312E. It has ±15kV ESD protection on both the RS-232 I/O pins and the TTL pins, making it suitable for harsh environments. It operates at speeds of up to 1Mbps. The ADM3307E is available in a 28-lead TSSOP package as well as a space-saving 32-lead LFCSP package.

Both products are available now and the price, in 1,000-piece quantities, is $1.20 for both the ADM3312E and ADM3307E.