Bus Terminators

Bus terminators are electrical devices attached to the end points of a bus network to prevent the signals from reflecting off the end of the transmission line. They do this by supplying a load equal to the impedance of the cable.

How do bus terminators work?

Bus networks are connected in a chain formation by a single wire or series of wire segments. Once each component has detected a signal, the signal is absorbed by the bus terminator allowing other components to place their signals on the cable. Without the bus terminator, a signal placed on a wire by a component would bounce back and forth between the ends of the cable, preventing other cables from signaling.

What are bus terminators used for?

Bus terminators are used in ethernet networks, small computer system interfaces, dummy loads and control area networks. If you are looking for a device that can provide bidirectional input or output control and can be used in either digital or analogue devices consider a bus transceiver


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Description Price Termination Type Number of Bits Typical Resistance Maximum Supply Current Package Type Pin Count Dimensions Length Width Height Maximum Operating Supply Voltage Maximum Operating Temperature Minimum Operating Supply Voltage Minimum Operating Temperature
RS Stock No. 123-8820
Mfr. Part No.NCV51510MWTAG
TWD47
Each (In a Pack of 5)
units
DDR1, DDR2, DDR3, DDR4, LPDDR3 - - - DFN 10 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.6 V - 1.1 V -
RS Stock No. 791-6296
Mfr. Part No.NUF2221W1T2G
TWD13
Each (On a Tape of 20)
units
USB Line Termination 2bit 1.5 kΩ, 22 Ω 10 nA SC-88 6 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 5.25 V +125 °C - -55 °C
RS Stock No. 163-0116
Mfr. Part No.NCP51401MNTXG
TWD19
Each (On a Reel of 3000)
units
DDR1, DDR2, DDR3, DDR4, LPDDR3 - 18Ω 1 mA DFN 10 3 x 3 x 0.95mm 3mm 3mm 0.95mm 5.5 V +125 °C 2.37 V -40 °C
RS Stock No. 919-9424
Mfr. Part No.LTC1694CS5#TRMPBF
TWD71
Each (On a Reel of 500)
units
- - - 100 μA TSOT-23 5 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm 6 V +70 °C 2.7 V 0 °C
RS Stock No. 761-9178
Mfr. Part No.LTC1694CS5#TRMPBF
TWD150
Each
units
- - - 100 μA TSOT-23 5 2.9 x 1.75 x 0.9mm 2.9mm 1.75mm 0.9mm 6 V +70 °C 2.7 V 0 °C
RS Stock No. 163-2662
Mfr. Part No.NCV51510MWTAG
TWD37
Each (On a Reel of 3000)
units
DDR1, DDR2, DDR3, DDR4, LPDDR3 - - - DFN 10 3 x 3 x 0.95mm 3mm 3mm 0.95mm 3.6 V - 1.1 V -
RS Stock No. 163-2632
Mfr. Part No.NCP51403MNTXG
TWD22
Each (On a Reel of 3000)
units
DDR1, DDR2, DDR3, DDR4, LPDDR3 - 18Ω 1 mA DFN 10 3 x 3 x 0.95mm 3mm 3mm 0.95mm 5.5 V +125 °C 2.375 V -40 °C
RS Stock No. 922-9500
Mfr. Part No.NCP51401MNTXG
TWD22
Each (In a Pack of 10)
units
DDR1, DDR2, DDR3, DDR4, LPDDR3 - 18Ω 1 mA DFN 10 3 x 3 x 0.95mm 3mm 3mm 0.95mm 5.5 V +125 °C 2.37 V -40 °C
RS Stock No. 162-9614
Mfr. Part No.NUF2221W1T2G
TWD7
Each (On a Reel of 3000)
units
USB Line Termination 2bit 1.5 kΩ, 22 Ω 10 nA SC-88 6 2.2 x 1.35 x 1mm 2.2mm 1.35mm 1mm 5.25 V +125 °C - -55 °C
RS Stock No. 123-8818
Mfr. Part No.NCP51403MNTXG
TWD28
Each (In a Pack of 10)
units
DDR1, DDR2, DDR3, DDR4, LPDDR3 - 18Ω 1 mA DFN 10 3 x 3 x 0.95mm 3mm 3mm 0.95mm 5.5 V +125 °C 2.375 V -40 °C