Meets or Exceeds the Requirements of ITU
Recommendations V.10, V.11, X.26, and
X.27
Designed to Operate Up To 20 Mbaud
–7 V to 7 V Common-Mode Input Voltage
Range With 300-mV Sensitivity
3-State TTL-Compatible Outputs
High Input Impedance . . . 12 kW Min
Input Hysteresis . . . 120 mV Typ
Single 5-V Supply Operation
Low Supply Current Requirement
35 mA Max
Improved Speed and Power Consumption
Compared to MC3486

description
The SN75ALS199 is a monolithic, quadruple line receiver with 3-state outputs designed using advanced,
low-power, Schottky technology. This technology provides combined improvements in bar design, tooling
production, and wafer fabrication, providing significantly less power consumption and permitting much higher
data throughput than other designs. The device meets the specification of ITU Recommendations V.10, V.11,
X.26, and X.27.
The SN75ALS199 features 3-state outputs that permit direct connection to a bus-organized system with a
fail-safe design that ensures the ouptuts will always be high if the inputs are open. The device is optimized for
balanced multipoint bus transmission at rates up to 20 megabits per second. The input features high-input
impedance, input hysteresis for increased noise immunity, and an input sensitivity of ±300 mV over a
common-mode input voltage range of ±7 V. It also features an active-high enable function for each of two
receiver pairs. The SN75ALS199 is designed for optimum performance when used with the SN75ALS194
quadruple, differential line driver.
The SN75ALS199 is characterized for operation from 0°C to 70°C.