Overview
The SN65MLVD082DGGR is an 8-channel half-duplex Multipoint-Low-Voltage Differential Signaling (M-LVDS) line transceiver produced by Texas Instruments. This device is designed to operate in compliance with the TIA/EIA-899 (M-LVDS) standard, supporting high-speed data transmission rates up to 250 Mbps. It features independent enables for each driver and global enable for the receivers, allowing for listen-while-talking operation. The SN65MLVD082 is packaged in a 64-pin TSSOP (DGG) and is characterized for operation from –40°C to 85°C.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3 | 3.3 | 3.6 | V |
| High-Level Input Voltage (VIH) | 2 | VCC | VCC | V |
| Low-Level Input Voltage (VIL) | GND | 0.8 | V | V |
| Operating Free-Air Temperature (TA) | –40 | 85 | °C | |
| Maximum Junction Temperature | 140 | °C | ||
| Driver Rise Time (tr) | 1 | 2 | ns | |
| Driver Fall Time (tf) | 1 | 2 | ns | |
| Propagation Delay Time (tpLH, tpHL) | 1 | 1.5 | 2.4 | ns |
| Differential Input Voltage Threshold (VIT+) | 150 | mV | ||
| Differential Input Voltage Hysteresis (VHYS) | 0 | mV |
Key Features
- Meets or exceeds the M-LVDS standard for signaling rates up to 250 Mbps and clock frequencies up to 125 MHz.
- Controlled driver output voltage transition times for improved signal quality.
- –1 V to 3.4 V common-mode voltage range, allowing data transfer with 2 V of ground noise.
- Bus pins high impedance when driver is disabled or VCC ≤ 1.5 V.
- Independent enables for each driver and global enable for the receivers.
- Bus pin ESD protection exceeds 8 kV.
- M-LVDS bus power up/down glitch free.
- Parallel multipoint data and clock transmission via backplanes and cables.
- Low-power, high-speed, short-reach alternative to TIA/EIA-485.
Applications
- Cellular base stations.
- Central-office switches.
- Network switches and routers.
- High-speed replacement for RS-485 where lower common-mode can be tolerated or when higher signaling rates are needed.
Q & A
- What is the maximum signaling rate supported by the SN65MLVD082?
The SN65MLVD082 supports signaling rates up to 250 Mbps.
- What is the operating temperature range of the SN65MLVD082?
The device operates from –40°C to 85°C.
- What type of ESD protection does the SN65MLVD082 have?
The bus pins have ESD protection that exceeds 8 kV.
- Can the SN65MLVD082 operate in multipoint bus configurations?
- What is the common-mode voltage range of the SN65MLVD082?
The common-mode voltage range is –1 V to 3.4 V.
- How is the driver output voltage transition time controlled?
The driver output voltage transition times are controlled to improve signal quality and allow for stubs on the bus.
- What is the purpose of the independent enables for each driver and global enable for the receivers?
This arrangement allows for listen-while-talking operation and flexible control over the transceivers.
- What kind of packaging is available for the SN65MLVD082?
The device is packaged in a 64-pin TSSOP (DGG).
- Does the SN65MLVD082 support parallel multipoint data and clock transmission?
- What are some typical applications of the SN65MLVD082?
Typical applications include cellular base stations, central-office switches, and network switches and routers.
