The LTC1518/LTC1519 are high speed, precision delay differential quad bus/line receivers that can operate at data rates as high as 52Mbps. They are pin compatible with the LTC488/LTC489 RS485 line receivers and operate over the entire –7V to 12V common mode range. A unique architecture provides very stable propagation delays and low skew over wide input common mode, input overdrive and ambient temperature ranges. Propagation delay is 18.5ns ±3.5ns over the commercial temperature range. Typical tPLH/tPHL and channel-to-channel skew is 500ps. Each receiver translates differential input levels (| VID | ≥ 300mV) into valid CMOS and TTL output levels. Its high input resistance (≥22k) allows many receivers to be connected to the same driver. The receiver outputs go into a high impedance state when disabled. The receivers have a fail-safe feature that guarantees a high output state when the inputs are shorted or left floating. Other protection features include thermal shutdown and a controlled maximum short-circuit current (50mA Max). Input resistance remains ≥22k when the device is unpowered or disabled, thus allowing hot swapping without loading the data lines. The LTC1518/LTC1519 operate from a single 5V supply and draw 12mA of supply current. Applications * High Speed RS485/RS422 Receivers * STS-1/OC-1 Data Receivers * PECL Line Receivers * Level Translators * Fast-20/Fast-40 SCSI Receiver * Precision Propagation Delay: 18.5ns ±3.5ns Over 0°C to 70°C Temperature Range * Data Rate: 52Mbps * Low tPLH/tPHL Skew: 500ps Typ * Low Channel-to-Channel Skew: 500ps Typ * –7V to 12V RS485 Input Common Mode Range * Input Resistance ≥22k, Even When Unpowered * Guaranteed Fail-Safe Operation over the Entire Common Mode Range * Hot Swap™ Capable * High Common Mode Rejection to 26MHz * Short-Circuit Protection: 10mA Typ Output Current for an Indefinite Short * Three-State Output Capability * Will Not Oscillate with Slow Moving Input Signals * Single 5V Supply * Pin Compatible with LTC488, LTC489 https://elecena.pl/product/251025/high-speed-precision-delay-rs485-quad-line-receivers 2007-03-02 https://elecena.pl/product/251025/high-speed-precision-delay-rs485-quad-line-receivers 2014-05-12 https://elecena.pl/product/251025/high-speed-precision-delay-rs485-quad-line-receivers 2025-01-19