Overview
The DS92LV1021AMSAX from Texas Instruments is a 10-bit Bus LVDS (Low Voltage Differential Signaling) Serializer designed to convert a 10-bit wide parallel LVCMOS/LVTTL data bus into a single high-speed serial LVDS data stream with an embedded clock. This device operates at clock speeds ranging from 16 MHz to 40 MHz and is capable of transmitting data over differential backplanes or unshielded twisted pair (UTP) cables. It is an upgrade to the DS92LV1021, featuring enhancements such as no power-up sequence requirement, slower typical edge rates to reduce reflections, and an internal weak pull-down device on the powerdown pin.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Operating Clock Frequency | 16 | - | 40 | MHz |
| Serial Bus LVDS Bandwidth | - | - | 400 | Mbps (at 40 MHz clock) |
| Input Data Bus Width | - | - | 10 bits | - |
| Output Differential Pair | - | - | Single differential pair | - |
| Power Supply Voltage | - | 3.3 | - | V |
| Operating Temperature Range | -40 | - | 85 | °C |
| Package Type | - | - | 28-Lead SSOP | - |
| Load Impedance Range | 27 | - | 100 | Ω |
Key Features
- Converts 10-bit wide parallel LVCMOS/LVTTL data bus into a single high-speed serial LVDS data stream with embedded clock.
- Operates at clock speeds from 16 MHz to 40 MHz.
- Single differential pair eliminates multi-channel skew.
- Flow-through pinout for easy PCB layout.
- Programmable edge trigger on clock.
- Bus LVDS serial output rated for 27Ω load.
- Powerdown pin with internal weak pull-down device to reduce power consumption.
- Output pins can be put into TRI-STATE to achieve high impedance state.
- Compatible with TI’s 10-bit BLVDS Deserializers (e.g., DS92LV1212A).
Applications
- Transmission over differential backplanes.
- Transmission over unshielded twisted pair (UTP) cables.
- Point-to-point configurations on backplanes, PCB traces, or through twisted pair cables.
- Use in systems requiring high-speed data transfer with minimal skew and reduced cable, PCB trace count, and connector size.
Q & A
- What is the primary function of the DS92LV1021AMSAX?
The primary function is to convert a 10-bit wide parallel LVCMOS/LVTTL data bus into a single high-speed serial LVDS data stream with an embedded clock.
- What is the operating clock frequency range of the DS92LV1021AMSAX?
The operating clock frequency range is from 16 MHz to 40 MHz.
- What is the maximum serial bus LVDS bandwidth of the DS92LV1021AMSAX?
The maximum serial bus LVDS bandwidth is 400 Mbps at a 40 MHz clock.
- How does the DS92LV1021AMSAX reduce channel skew?
The single differential pair eliminates multi-channel skew.
- What is the purpose of the powerdown pin on the DS92LV1021AMSAX?
The powerdown pin reduces power consumption by shutting down the PLL and putting the outputs into TRI-STATE when driven low.
- Can the DS92LV1021AMSAX be used with other Texas Instruments deserializers?
Yes, it can be used with any of TI’s 10-bit BLVDS Deserializers, such as the DS92LV1212A.
- What is the load impedance range for the DS92LV1021AMSAX?
The load impedance range is between 27Ω and 100Ω.
- How does the DS92LV1021AMSAX simplify PCB design?
The flow-through pinout of the DS92LV1021AMSAX makes PCB design easier.
- What is the operating temperature range of the DS92LV1021AMSAX?
The operating temperature range is from -40°C to 85°C.
- What package type is the DS92LV1021AMSAX available in?
The DS92LV1021AMSAX is available in a 28-Lead SSOP package.
