1.8V TO 5V SINGLE RS232 X/RX
LTC2801CDE
LTC2801 - 1.8V to 5.5V RS-232 Single and Dual Transceivers
Features
1.8V to 5.5V Supply Voltage
Single and Dual Transceivers
High-Speed Operation
1Mbps for 250pF/3kΩ Load (LTC2802, LTC2804)
250kbps for 1nF/3kΩ Load
100kbps for 2.5nF/3kΩ TIA/EIA-232-F Load
Low-Power 1μA Shutdown and 15μA Receivers- Active Modes
No Damage or Latch-Up to ±10kV ESD on RS-232 Interface
Logic Supply Pin for Easy Level-Shifting to UART or Microprocessor
Low-Latency Output Enable Allows Line Sharing and Half-Duplex Operation
True RS-232 Compliant Output Levels
Small Footprint:
LTC2801/LTC2802 4mm × 3mm DFN Package
LTC2803/LTC2804 Narrow SSOP-16 and
5mm × 3mm DFN Packages
Description
The LTC®2801/LTC2802/LTC2803/LTC2804 are single and dual RS-232 transceivers in narrow SSOP and chip-scale DFN packages. All operate over a supply range of 1.8V to 5.5V, which permits operation directly from two alkaline, NiCd or NiMH cells. An integrated DC-to-DC converter generates power supplies for driving RS-232 levels. A logic supply pin allows easy interfacing with different logic levels independent of the DC-DC supply.
These parts are compatible with the TIA/EIA-232-F standard. Driver outputs are protected from overload and can be shorted to ground or up to ±15V without damage. To extend battery life, receivers can be kept active, operating at reduced speed, with only 15μA current. In shutdown mode, current is further reduced to 1μA. Line sharing and half-duplex operation are also supported.
Applications
Battery-Powered Systems
Computers and Consumer Electronics
Diagnostic Ports