Texas Instruments SN65LVDS151DAR
- Part Number:
- SN65LVDS151DAR
- Manufacturer:
- Texas Instruments
- Ventron No:
- 5230617-SN65LVDS151DAR
- Description:
- MuxIt ™ serializer-transmitter
- Datasheet:
- sn65lvds151
- FunctionSerializer
- ProtocolsMuxIt
- Supply voltage (V)3.3
- Signaling rate (MBps)200
- Input signalLVCMOS
- Output signalLVDS
- RatingCatalog
- Operating temperature range (°C)-40 to 85
MuxIt is a family of general-purpose, multiple-chip building blocks for implementing parallel data serializers and deserializers. The system allows for wide parallel data to be transmitted through a reduced number of transmission lines over distances greater than can be achieved with a single-ended (e.g., LVTTL or LVCMOS) data interface. The number of bits multiplexed per transmission line is user-selectable and allows for higher transmission efficiencies than with existing fixed ratio solutions. MuxIt utilizes the LVDS (TIA/EIA-644-A) low voltage differential signaling technology for communications between the data source and data destination.
The MuxIt family initially includes three devices supporting simplex communications: the SN65LVDS150 phase locked loop frequency multiplier, the SN65LVDS151 serializer-transmitter, and the SN65LVDS152 receiver-deserializer.
The SN65LVDS151 consists of a 10-bit parallel-in/serial-out shift register, three LVDS differential transmission line receivers, a pair of LVDS differential transmission line drivers, plus associated input buffers. It accepts up to 10 bits of user data on parallel data inputs (DI-0 → DI-9) and serializes (multiplexes) the data for transmission over an LVDS transmission line link. Two or more SN65LVDS151 units may be connected in series (cascaded) to accommodate wider parallel data paths for higher serialization values. Data is transmitted over the LVDS serial link at M times the input parallel data clock frequency. The multiplexing ratio M, or number of bits per data clock cycle, is programmed on the companion SN65LVDS150 MuxIt programmable PLL frequency multiplier with configuration pins (M1 → M5). The range of multiplexing ratio M supported by the SN65LVDS150 MuxIt programmable PLL frequency multiplier is between 4 and 40 . Table 1 shows some of the combinations of LCRI and MCI supported by the SN65LVDS150 MuxIt programmable PLL frequency multiplier.
Data is parallel loaded into the SN65LVDS151 input latches on the first rising edge of the M-clock input (MCI) signal following a rising edge of the link clock reference input (LCRI). The data is read out serially from the SN65LVDS151 shift registers on the rising edges of the M-clock input (MCI). The lowest order bit of parallel input data, DI-0, is output from DO on the third rising edge of MCI following the rising edge of LCRI. The remaining bits of parallel input data, DI-1 → DI-(M-1) are clocked out sequentially, in ascending order, by subsequent MCI rising edges. The link clock output (LCO) signal rising edge is synchronized to the data output (DO) by an internal circuit clocked by MCI. The LCO signal rising edge follows the first rising edge of MCI after the rising edge of LCRI. Examples of operating waveforms for values of M = 4 and M = 10 are provided in Figure 1.
Both the LCRI and MCI signals are intended to be sourced from the SN65LVDS150 MuxIt programmable frequency multiplier. They are carried over LVDS differential connections to minimize skew and jitter. The SN65LVDS151 includes LVDS differential line drivers for both the serialized data output (DO) stream and the link clock output (LCO). The cascade input (CI) is also an LVDS connection, and when it is used it is tied to the DO output of the preceding SN65LVDS151.
An internal power-on reset (POR) and an enable input (EN) control the operation of the SN65LVDS151. When VCC is below 1.5 V, or when EN is low, the device is in a low-power disabled state, and the DO and LCO differential outputs are in a high-impedance state. When VCC is above 3 V and EN is high, the device and the two differential outputs are enabled and operating to specifications. The link clock output enable input (LCO_EN) is used to turn off the LCO output when it is not being used. Cascade input enable (CI_EN) is used to turn off the CI input when it is not being used.
Serialized data bits are output from the DO output, starting in ascending order, from parallel input bit DI-0. The number of serialized data bits output per data clock cycle is determined by the multiplexing ratio M. For values of M less than or equal to 10, the cascade input (CI±) is not used, and only the first M parallel input bits (DI-0 thought DI-[M-1]) are used. For values of M greater than 10, all ten parallel input bits (DI-0 though DI-9) are used, and the cascade input is used to shift in the remaining data bits from additional SN65LVDS151 serializers. Table 2 shows which input data bits are used as a function of the multiplier M.
MuxIt ™ serializer-transmitter 32-TSSOP -40 to 85
Serializers and Deserializers MuxIt Serializer- Transmitter
LVDS Serializer 200Mbps 32-Pin TSSOP T/R
LVDS Interface IC MuxIt Serializer- Transmitter
IC SERIALIZER-XMITTER 32-TSSOP
-
ImagePart NumberManufacturerFunctionProtocolsSupply voltage (V)Signaling rate (MBps)Input signalOutput signalRatingOperating temperature range (°C)Number of receiversNumber of transmittersSupply voltage (nom) (V)Signaling rate (max) (MBps)IEC 61000-4-2 contact (±V)Fault protection (V)Common-mode range (V)Number of nodesIsolatedSupply current (max) (μA)DuplexView Compare
-
SN65LVDS151DARSerializerMuxIt3.3200LVCMOSLVDSCatalog-40 to 85------------
-
------Catalog-40 to 8540540None-10 to 15-7 to 1232No70000-
-
BufferMuxIt3.3-LVDSLVDSCatalog-40 to 8511---------
-
------Catalog-40 to 10511510None-10 to 15-7 to 1232No70000Half
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