Overview
The DS91M040TSQE/NOPB is a quad M-LVDS (Multipoint Low-Voltage Differential Signaling) transceiver produced by Texas Instruments. This device is specifically designed for driving and receiving clock or data signals in multipoint and multidrop cable and backplane applications. It leverages LVDS technology to provide increased drive current, handling double terminations required in multi-point configurations. The DS91M040 supports both M-LVDS type 1 and type 2 receiver inputs and converts LVTTL/LVCMOS signals to differential M-LVDS signal levels and vice versa.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Power Supply Voltage | -0.3V | +4V | V | ||
| LVCMOS Input Voltage | -0.3V | VDD + 0.3V | V | ||
| M-LVDS I/O Voltage | -1.9V | +5.5V | V | ||
| Operating Temperature Range | -40°C | +85°C | °C | ||
| Differential Output Voltage Magnitude | RL = 50Ω, CL = 5 pF | 480 mV | 650 mV | mV | |
| Differential Propagation Delay Low to High | RL = 50Ω, CL = 5 pF | 1.5 ns | 3.3 ns | 5.5 ns | ns |
| Maximum Operating Frequency | 125 MHz | MHz | |||
| Package Type | 32-Pin WQFN |
Key Features
- DC - 125 MHz / 250 Mbps Low Jitter, Low Skew, Low Power Operation
- Wide Input Common Mode Voltage Range Allows up to ±1V of GND Noise
- Conforms to TIA/EIA-899 M-LVDS Standard
- Pin Selectable M-LVDS Receiver Type (1 or 2)
- Controlled Transition Times (2.0 ns typ) Minimize Reflections
- 8 kV ESD on M-LVDS I/O pins protects adjoining components
- Flow-Through Pinout Simplifies PCB Layout
- Small 5 mm x 5 mm WQFN-32 Space Saving Package
Applications
- Multidrop / Multipoint Clock and Data Distribution
- High-Speed, Low Power, Short-Reach Alternative to TIA/EIA-485/422
- Clock Distribution in AdvancedTCA (ATCA) and MicroTCA (μTCA, uTCA) Backplanes
Q & A
- What is the DS91M040TSQE/NOPB used for?
The DS91M040TSQE/NOPB is a quad M-LVDS transceiver used for driving and receiving clock or data signals in multipoint and multidrop cable and backplane applications.
- What is the maximum operating frequency of the DS91M040?
The maximum operating frequency of the DS91M040 is 125 MHz.
- What are the key features of the DS91M040?
The key features include low jitter, low skew, low power operation, wide input common mode voltage range, pin selectable receiver types, controlled transition times, and ESD protection.
- What package type does the DS91M040 come in?
The DS91M040 comes in a 32-Pin WQFN package.
- What is the operating temperature range of the DS91M040?
The operating temperature range is -40°C to +85°C.
- Does the DS91M040 support both M-LVDS type 1 and type 2 receiver inputs?
- What is the differential output voltage magnitude of the DS91M040?
The differential output voltage magnitude is typically 650 mV with a minimum of 480 mV.
- What are some common applications of the DS91M040?
- How does the DS91M040 handle ESD protection?
The DS91M040 has 8 kV ESD protection on M-LVDS I/O pins to protect adjoining components.
- What is the significance of controlled transition times in the DS91M040?
Controlled transition times minimize reflections that are common in multipoint configurations due to unterminated stubs.
