LTC2801

Features:

` 1.8V to 5.5V Supply Voltage
` Single and Dual Transceivers
` High-Speed Operation
1Mbps for 250pF/3k Load (LTC2802, LTC2804)
250kbps for 1nF/3k Load
100kbps for 2.5nF/3k TIA/EIA-232-F Load
` Low-Power 1A Shutdown and 15A 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

Application

·Battery-Powered Systems
· Computers and Consumer Electronics
· Diagnostic Ports


Pinout




Specifications

Input Supplies
V_CC ...........................................................0.3V to 7V
V_L .........................................................0.3V to 6.7V
Generated Supplies
V_DD ................................................ V_CC 0.3V to 7.5V
V_EE ........................................................ 0.3V to 7.5V
V_DD V_EE ..............................................................14V
SW .................................................. 0.3V to V_DD + 0.3V
CAP .................................................. +0.3V to V_EE 0.3V
TIN, T1IN, T2IN, MODE ................................0.3V to 7V
PS, ONOFF .....................................0.3V to (V_L + 0.3V)
RIN, R1IN, R2IN ..........................................25V to 25V
TOUT, T1OUT, T2OUT ..................................15V to 15V
ROUT, R1OUT, R2OUT ....................0.3V to (V_L + 0.3V)
Operating Temperature
LTC280XC ................................................ 0°C to 70°C
LTC280XI .............................................40°C to 85°C
Storage Temperature Range ..............65°C to 125°C
Lead Temperature (Soldering, 10 sec)
GN Package ...................................................... 300°C


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 of LTC2801/LTC2802/LTC2803/LTC2804  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 15A current. In shutdown mode, current is further reduced to 1A. Line sharing and half-duplex operation are also supported.