component
LTC2850IMS8#TRPBF
Public Made by Adomby adom
Analog Devices RS-485 / RS-422 ICs, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LTC2850IMS8#TRPBF
Analog Devices · RS-485 / RS-422 ICs · MSOP-8
LTC2850IMS8#TRPBF from Analog Devices, in a MSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | RO | output | Receiver output: goes high when A-B is greater than 200mV, low when A-B is less than -200mV, and stays high if the inputs are open, shorted, or terminated without a valid signal; it is high impedance when the receiver is disabled. |
| 2 | RE | input | Receiver enable: a low enables the receiver and a high forces the RO output into a high impedance state. |
| 3 | DE | input | Driver enable: a high enables the driver and a low forces the driver outputs into high impedance; with RE high and DE low the part enters low power shutdown. |
| 4 | DI | input | Driver input: with the driver enabled (DE high), a low on DI drives the positive output low and the negative output high, and a high on DI drives the positive output high and the negative output low. |
| 5 | GND | power_in | Ground reference for the device; all voltages are referenced to this pin. |
| 6 | A | bidirectional | Noninverting receiver input and noninverting driver output for the LTC2850; input impedance is greater than 96kΩ in receive mode or when unpowered, and the operating common mode range is -7V to 12V. |
| 7 | B | bidirectional | Inverting receiver input and inverting driver output for the LTC2850; input impedance is greater than 96kΩ in receive mode or when unpowered, and the operating common mode range is -7V to 12V. |
| 8 | VCC | power_in | Positive supply, specified for 3V ≤ VCC ≤ 3.6V; bypass with a 0.1µF ceramic capacitor. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | MSOP-8 |
| Category | Interface |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Voltage (VCC) | VCC | -0.3 | 7 | V | 2 | ||
| Logic Input Voltages (RE, DE, DI) | -0.3 | 7 | V | 2 | |||
| Interface I/O A, B, Y, Z | A, B, Y, Z | 15 | V | min printed as (VCC, 15V) | 2 | ||
| Receiver Output Voltage (RO) | RO | -0.3 | V | max printed as (VCC + 0.3V) (Note 1) | 2 | ||
| Operating Temperature LTC285xI | -40 | 85 | °C | LTC285xI (Industrial grade) | 2 | ||
| Storage Temperature Range | -65 | 150 | °C | 2 | |||
| Maximum Junction Temperature | TJMAX | 150 | °C | MS8 package | 2 | ||
| Supply Voltage (VCC) operating range | VCC | 3 | 3.6 | V | Positive supply pin function | 9 | |
| Differential Driver Output Voltage /VOD/ | /VOD/ | 1.5 | V | R = ∞, VCC = 3V (Figure 1) | 4 | ||
| Differential Driver Output Voltage /VOD/ | /VOD/ | 2 | V | R = 27Ω, VCC = 3V (Figure 1) | 4 | ||
| Difference in Magnitude of Driver Differential Output Voltage | Δ/VOD/ | 0.2 | V | R = 27Ω or 50Ω (Figure 1) | 4 | ||
| Driver Common Mode Output Voltage | VOC | 3 | V | R = 27Ω or 50Ω (Figure 1) | 4 | ||
| Difference in Magnitude of Driver Common Mode Output Voltage | Δ/VOC/ | 0.2 | V | R = 27Ω or 50Ω (Figure 1) | 4 | ||
| Maximum Driver Short-Circuit Current | IOSD | -250 | 250 | mA | -7V ≤ (Y or Z) ≤ 12V (Figure 2) | 4 | |
| Maximum Driver Short-Circuit Current (reverse, extreme cold) | IOSD | 300 | mA | -7V ≤ (Y or Z) ≤ 12V (Figure 2) | 4 | ||
| Receiver Input Current (A, B) at VIN = 12V (C, I-Grade) | IIN | 125 | µA | DE = TE = 0V, VCC = 0V or 3.3V, VIN = 12V (Figure 3) (C, I-Grade) | 4 | ||
| Receiver Input Current (A, B) at VIN = -7V (C, I-Grade) | IIN | -100 | µA | DE = TE = 0V, VCC = 0V or 3.3V, VIN = -7V, (Figure 3) (C, I-Grade) | 4 | ||
| Receiver Input Resistance (C, I-Grade) | RIN | 96 | 125 | kΩ | RE = VCC or 0V, DE = TE = 0V, VIN = -7V, -3V, 3V, 7V, 12V (Figure 3) (C, I-Grade) | 4 | |
| Receiver Differential Input Threshold Voltage | VTH | -0.2 | 0.2 | V | -7V ≤ B ≤ 12V | 4 | |
| Receiver Output High Voltage | VOH | 2.4 | V | I(RO) = -4mA, A-B = 200mV, VCC = 3V | 4 | ||
| Receiver Output Low Voltage | VOL | 0.4 | V | I(RO) = 4mA, A-B = -200mV, VCC = 3V | 4 | ||
| Receiver Three-State Output Current on RO | IOZR | -1 | 1 | µA | RE = VCC, 0V ≤ RO ≤ VCC (LTC2850, LTC2852) | 4 | |
| Receiver Short-Circuit Current | IOSR | -85 | 85 | mA | 0V ≤ RO ≤ VCC | 4 | |
| Logic Input High Voltage | VIH | 2 | V | VCC = 3.6V | 4 | ||
| Logic Input Low Voltage | VIL | 0.8 | V | VCC = 3V | 4 | ||
| Logic Input Current | IINL | -10 | 0 | 10 | µA | 4 | |
| Maximum Data Rate | fMAX | 20 | Mbps | Note 3 | 5 | ||
| Driver Input to Output Propagation Delay | tPLHD, tPHLD | 10 | 50 | ns | RDIFF = 54Ω, CL = 100pF (Figure 4) | 5 | |
| Driver Input to Output Propagation Delay Difference | ΔtPD | 1 | 6 | ns | RDIFF = 54Ω, CL = 100pF (Figure 4) | 5 | |
| Driver Output Y to Output Z Skew | tSKEWD | -6 | 1 | 6 | ns | RDIFF = 54Ω, CL = 100pF (Figure 4) | 5 |
| Driver Rise or Fall Time | tRD, tFD | 4 | 12.5 | ns | RDIFF = 54Ω, CL = 100pF (Figure 4) | 5 | |
| Driver Enable or Disable Time | tZLD, tZHD, tLZD, tHZD | 70 | ns | RL = 500Ω, CL = 50pF, RE = 0V (Figure 5) (LTC2850, LTC2852) | 5 | ||
| Driver Enable from Shutdown | tZHSD, tZLSD | 8 | µs | RL = 500Ω, CL = 50pF, RE = VCC (Figure 5) (LTC2850, LTC2852) | 5 | ||
| Time to Shutdown | tSHDN | 100 | ns | RL = 500Ω, CL = 50pF, (DE = ↓, RE = VCC) or (DE = 0V, RE = ↑) (Figure 5) (LTC2850, LTC2852) | 5 | ||
| Receiver Input to Output Propagation Delay | tPLHR, tPHLR | 50 | 70 | ns | CL = 15pF, VCM = 1.5V, /VAB/ = 1.5V, tR and tF < 4ns (Figure 6) | 5 | |
| Differential Receiver Skew | tSKEWR | 1 | 6 | ns | CL = 15pF (Figure 6) | 5 | |
| Receiver Output Rise or Fall Time | tRR, tFR | 3 | 12.5 | ns | CL = 15pF (Figure 6) | 5 | |
| Receiver Enable/Disable Time | tZLR, tZHR, tLZR, tHZR | 50 | ns | RL =1k, CL =15pF, DE = VCC (Figure 7) (LTC2850, LTC2852) | 5 | ||
| Receiver Enable from Shutdown | tZHSR, tZLSR | 8 | µs | RL = 1k, CL = 15pF, DE = 0V (Figure 7) (LTC2850, LTC2852) | 5 | ||
| Supply Current in Shutdown Mode | ICCS | 0 | 5 | µA | DE = 0V, RE = VCC, LTC2850, LTC2852 (C and I-Grade) | 5 | |
| Supply Current in Receive Mode | ICCR | 370 | 900 | µA | DE = 0V, RE = 0V (LTC2850, LTC2852) | 5 | |
| Supply Current in Transmit Mode | ICCT | 450 | 1000 | µA | No Load, DE = VCC, RE = VCC (LTC2850, LTC2852) | 5 | |
| Supply Current with Both Driver and Receiver Enabled | ICCTR | 450 | 1000 | µA | No Load, DE = VCC, RE = 0V | 5 | |
| Thermal Resistance Junction-to-Ambient (MS8) | θJA | 200 | °C/W | MS8 (8-lead plastic MSOP) package | 2 | ||
| Thermal Resistance Junction-to-Case (MS8) | θJC | 40 | °C/W | MS8 (8-lead plastic MSOP) package | 2 |
CAD (KiCad official)
- Symbol:
LTC2850IMS8#TRPBF - Footprint:
Package_SO:MSOP-8_3x3mm_P0.65mm - 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files:
ltc2850ims8-trpbf-etched.step/ltc2850ims8-trpbf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ltc2850ims8-trpbf.step/ltc2850ims8-trpbf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (18 pp, sha256
68e25e1cc3687b9f, retrieved 2026-10-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).
# LTC2850IMS8#TRPBF
**Analog Devices** · RS-485 / RS-422 ICs · MSOP-8
LTC2850IMS8#TRPBF from Analog Devices, in a MSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
## Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | RO | output | Receiver output: goes high when A-B is greater than 200mV, low when A-B is less than -200mV, and stays high if the inputs are open, shorted, or terminated without a valid signal; it is high impedance when the receiver is disabled. |
| 2 | RE | input | Receiver enable: a low enables the receiver and a high forces the RO output into a high impedance state. |
| 3 | DE | input | Driver enable: a high enables the driver and a low forces the driver outputs into high impedance; with RE high and DE low the part enters low power shutdown. |
| 4 | DI | input | Driver input: with the driver enabled (DE high), a low on DI drives the positive output low and the negative output high, and a high on DI drives the positive output high and the negative output low. |
| 5 | GND | power_in | Ground reference for the device; all voltages are referenced to this pin. |
| 6 | A | bidirectional | Noninverting receiver input and noninverting driver output for the LTC2850; input impedance is greater than 96kΩ in receive mode or when unpowered, and the operating common mode range is -7V to 12V. |
| 7 | B | bidirectional | Inverting receiver input and inverting driver output for the LTC2850; input impedance is greater than 96kΩ in receive mode or when unpowered, and the operating common mode range is -7V to 12V. |
| 8 | VCC | power_in | Positive supply, specified for 3V ≤ VCC ≤ 3.6V; bypass with a 0.1µF ceramic capacitor. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | MSOP-8 |
| Category | Interface |
| Pins | 8 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Voltage (VCC) | VCC | -0.3 | | 7 | V | | 2 |
| Logic Input Voltages (RE, DE, DI) | | -0.3 | | 7 | V | | 2 |
| Interface I/O A, B, Y, Z | A, B, Y, Z | | | 15 | V | min printed as (VCC, 15V) | 2 |
| Receiver Output Voltage (RO) | RO | -0.3 | | | V | max printed as (VCC + 0.3V) (Note 1) | 2 |
| Operating Temperature LTC285xI | | -40 | | 85 | °C | LTC285xI (Industrial grade) | 2 |
| Storage Temperature Range | | -65 | | 150 | °C | | 2 |
| Maximum Junction Temperature | TJMAX | | | 150 | °C | MS8 package | 2 |
| Supply Voltage (VCC) operating range | VCC | 3 | | 3.6 | V | Positive supply pin function | 9 |
| Differential Driver Output Voltage /VOD/ | /VOD/ | 1.5 | | | V | R = ∞, VCC = 3V (Figure 1) | 4 |
| Differential Driver Output Voltage /VOD/ | /VOD/ | 2 | | | V | R = 27Ω, VCC = 3V (Figure 1) | 4 |
| Difference in Magnitude of Driver Differential Output Voltage | Δ/VOD/ | | | 0.2 | V | R = 27Ω or 50Ω (Figure 1) | 4 |
| Driver Common Mode Output Voltage | VOC | | | 3 | V | R = 27Ω or 50Ω (Figure 1) | 4 |
| Difference in Magnitude of Driver Common Mode Output Voltage | Δ/VOC/ | | | 0.2 | V | R = 27Ω or 50Ω (Figure 1) | 4 |
| Maximum Driver Short-Circuit Current | IOSD | -250 | | 250 | mA | -7V ≤ (Y or Z) ≤ 12V (Figure 2) | 4 |
| Maximum Driver Short-Circuit Current (reverse, extreme cold) | IOSD | | | 300 | mA | -7V ≤ (Y or Z) ≤ 12V (Figure 2) | 4 |
| Receiver Input Current (A, B) at VIN = 12V (C, I-Grade) | IIN | | | 125 | µA | DE = TE = 0V, VCC = 0V or 3.3V, VIN = 12V (Figure 3) (C, I-Grade) | 4 |
| Receiver Input Current (A, B) at VIN = -7V (C, I-Grade) | IIN | -100 | | | µA | DE = TE = 0V, VCC = 0V or 3.3V, VIN = -7V, (Figure 3) (C, I-Grade) | 4 |
| Receiver Input Resistance (C, I-Grade) | RIN | 96 | 125 | | kΩ | RE = VCC or 0V, DE = TE = 0V, VIN = -7V, -3V, 3V, 7V, 12V (Figure 3) (C, I-Grade) | 4 |
| Receiver Differential Input Threshold Voltage | VTH | -0.2 | | 0.2 | V | -7V ≤ B ≤ 12V | 4 |
| Receiver Output High Voltage | VOH | 2.4 | | | V | I(RO) = -4mA, A-B = 200mV, VCC = 3V | 4 |
| Receiver Output Low Voltage | VOL | | | 0.4 | V | I(RO) = 4mA, A-B = -200mV, VCC = 3V | 4 |
| Receiver Three-State Output Current on RO | IOZR | -1 | | 1 | µA | RE = VCC, 0V ≤ RO ≤ VCC (LTC2850, LTC2852) | 4 |
| Receiver Short-Circuit Current | IOSR | -85 | | 85 | mA | 0V ≤ RO ≤ VCC | 4 |
| Logic Input High Voltage | VIH | 2 | | | V | VCC = 3.6V | 4 |
| Logic Input Low Voltage | VIL | | | 0.8 | V | VCC = 3V | 4 |
| Logic Input Current | IINL | -10 | 0 | 10 | µA | | 4 |
| Maximum Data Rate | fMAX | 20 | | | Mbps | Note 3 | 5 |
| Driver Input to Output Propagation Delay | tPLHD, tPHLD | | 10 | 50 | ns | RDIFF = 54Ω, CL = 100pF (Figure 4) | 5 |
| Driver Input to Output Propagation Delay Difference | ΔtPD | | 1 | 6 | ns | RDIFF = 54Ω, CL = 100pF (Figure 4) | 5 |
| Driver Output Y to Output Z Skew | tSKEWD | -6 | 1 | 6 | ns | RDIFF = 54Ω, CL = 100pF (Figure 4) | 5 |
| Driver Rise or Fall Time | tRD, tFD | | 4 | 12.5 | ns | RDIFF = 54Ω, CL = 100pF (Figure 4) | 5 |
| Driver Enable or Disable Time | tZLD, tZHD, tLZD, tHZD | | | 70 | ns | RL = 500Ω, CL = 50pF, RE = 0V (Figure 5) (LTC2850, LTC2852) | 5 |
| Driver Enable from Shutdown | tZHSD, tZLSD | | | 8 | µs | RL = 500Ω, CL = 50pF, RE = VCC (Figure 5) (LTC2850, LTC2852) | 5 |
| Time to Shutdown | tSHDN | | | 100 | ns | RL = 500Ω, CL = 50pF, (DE = ↓, RE = VCC) or (DE = 0V, RE = ↑) (Figure 5) (LTC2850, LTC2852) | 5 |
| Receiver Input to Output Propagation Delay | tPLHR, tPHLR | | 50 | 70 | ns | CL = 15pF, VCM = 1.5V, /VAB/ = 1.5V, tR and tF < 4ns (Figure 6) | 5 |
| Differential Receiver Skew | tSKEWR | | 1 | 6 | ns | CL = 15pF (Figure 6) | 5 |
| Receiver Output Rise or Fall Time | tRR, tFR | | 3 | 12.5 | ns | CL = 15pF (Figure 6) | 5 |
| Receiver Enable/Disable Time | tZLR, tZHR, tLZR, tHZR | | | 50 | ns | RL =1k, CL =15pF, DE = VCC (Figure 7) (LTC2850, LTC2852) | 5 |
| Receiver Enable from Shutdown | tZHSR, tZLSR | | | 8 | µs | RL = 1k, CL = 15pF, DE = 0V (Figure 7) (LTC2850, LTC2852) | 5 |
| Supply Current in Shutdown Mode | ICCS | 0 | | 5 | µA | DE = 0V, RE = VCC, LTC2850, LTC2852 (C and I-Grade) | 5 |
| Supply Current in Receive Mode | ICCR | | 370 | 900 | µA | DE = 0V, RE = 0V (LTC2850, LTC2852) | 5 |
| Supply Current in Transmit Mode | ICCT | | 450 | 1000 | µA | No Load, DE = VCC, RE = VCC (LTC2850, LTC2852) | 5 |
| Supply Current with Both Driver and Receiver Enabled | ICCTR | | 450 | 1000 | µA | No Load, DE = VCC, RE = 0V | 5 |
| Thermal Resistance Junction-to-Ambient (MS8) | θJA | | 200 | | °C/W | MS8 (8-lead plastic MSOP) package | 2 |
| Thermal Resistance Junction-to-Case (MS8) | θJC | | 40 | | °C/W | MS8 (8-lead plastic MSOP) package | 2 |
## CAD (KiCad official)
- Symbol: `LTC2850IMS8#TRPBF`
- Footprint: `Package_SO:MSOP-8_3x3mm_P0.65mm`
- 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files: `ltc2850ims8-trpbf-etched.step` / `ltc2850ims8-trpbf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ltc2850ims8-trpbf.step` / `ltc2850ims8-trpbf.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Analog Devices datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588916811005890560) (18 pp, sha256 `68e25e1cc3687b9f`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/ltc2850ims8-trpbf-datasheet.pdf)