Key Specifications

 

The UM340XS8 Series are pure 3.3V supply differential Multipoint Low Voltage (M−LVDS) line Drivers and Receivers. Devices UM3400S8 and UM3401S8 are TIA/EIA−899 compliant. UM3400S8 offers the Type 1 receiver threshold at 0.0V. UM3401S8 offers the Type 2 receiver threshold at 0.1 V.
These devices have Type 1 and Type 2 receivers that detect the bus state with as little as 50 mV of differential input voltage over a common−mode voltage range of −1V to 3.4V. The Type 1 receivers have near zero thresholds (±50 mV) and exhibit 25 mV of differential input voltage hysteresis to prevent output oscillations with slowly changing signals or loss of input. Type 2 receivers include an offset threshold to provide a detectable voltage under open−circuit, idle−bus, and other faults conditions. UM3400S8 and UM3401S8 support Simplex or Half Duplex bus configurations.
 

- Low−Voltage Differential 30 Ω to 55 Ω Line Drivers and Receivers for Signaling Rates Up to 100 Mbps
- Type 1 Receivers Incorporate 25 mV of Hysteresis
- Type 2 Receivers Provide an Offset (100 mV)
  Threshold to Detect Open−Circuit and Idle−Bus Conditions
- Meets or Exceeds the M−LVDS Standard TIA/EIA−899 for Multipoint Data Interchange
- Controlled Driver Output Voltage Transition Times for Improved Signal Quality
- −1 V to 3.4 V Common−Mode Voltage Range Allows Data Transfer With up to 2 V of Ground Noise
- Bus Pins High Impedance When Disabled or V_CC ≤ 1.5 V
- M−LVDS Bus Power Up/Down Glitch Free
- Operating range: VCC = 3.3 ±10% V (3.0 to 3.6V)
- Operation from –40°C to 85°C
- Latch-Up Performance Exceeds 200mA
- These are Pb−Free Devices

  

 
- Low−Power High−Speed Short−Reach Alternative to TIA/EIA−485

 

Part Number	Operating Temperature	Mark Code	Package Type	Shipping Qty
UM3400S8	-40°C to +85°C	UM3400S8	SOP8	3000pcs/13 Inch Tape & Reel