component
LTC1480IS8#PBF
Public Made by Adomby adom
Analog Devices RS-485/RS-422 ICs, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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LTC1480IS8#PBF
Analog Devices · RS-485/RS-422 ICs · SO-8
LTC1480IS8#PBF from Analog Devices, in a SO-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: when the receiver is enabled (RE LOW) and A exceeds B by 200mV, RO is HIGH, and when A is 200mV below B, RO is LOW. |
| 2 | RE | input | Receiver output enable: a LOW enables RO, and a HIGH forces RO into a high-impedance state; RE HIGH with DE LOW places the part in shutdown. |
| 3 | DE | input | Driver output enable: a HIGH enables the driver outputs A and B, and a LOW forces them into high impedance; with RE HIGH and DE LOW the part enters the low-power (1µA) shutdown state. |
| 4 | DI | input | Driver input: with the driver outputs enabled (DE HIGH), a LOW on DI forces A LOW and B HIGH, and a HIGH on DI forces A HIGH and B LOW. |
| 5 | GND | power_in | Ground reference for the device. |
| 6 | A | bidirectional | Driver output / receiver input (non-inverting RS485 line terminal), with the common mode range of -7V to 12V stated for the receiver inputs. |
| 7 | B | bidirectional | Driver output / receiver input (inverting RS485 line terminal), with the common mode range of -7V to 12V stated for the receiver inputs. |
| 8 | VCC | power_in | Positive supply, specified for 3.0V < VCC < 3.6V (absolute maximum 7V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | SO-8 |
| Category | Communication Interface Chip/UART/485/232 |
| 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 |
|---|---|---|---|---|---|---|---|
| Differential Driver Output Voltage (Unloaded) | VOD1 | 3.3 | V | IO = 0V | 2 | ||
| Differential Driver Output Voltage (with Load, RS485) | VOD2 | 1.5 | 3.3 | V | R = 27Ω (RS485) (Figure 1) | 2 | |
| Differential Driver Output Voltage (with Load, RS422) | VOD2 | 2 | V | R = 50Ω (RS422) | 2 | ||
| Change in Magnitude of Driver Differential Output Voltage for Complementary Output States | ΔVOD | 0.2 | V | R = 27Ω or R = 50Ω (Figure 1) | 2 | ||
| Driver Common Mode Output Voltage | VOC | 2 | V | R = 27Ω or R = 50Ω (Figure 1) | 2 | ||
| Change in Magnitude of Driver Common Mode Output Voltage for Complementary Output States | ΔVOC | 0.2 | V | R = 27Ω or R = 50Ω (Figure 1) | 2 | ||
| Input HIGH Voltage | VIH | 2 | V | DE, DI, RE | 2 | ||
| Input LOW Voltage | VIL | 0.8 | V | DE, DI, RE | 2 | ||
| Input Current | IIN1 | -2 | 2 | µA | DE, DI, RE | 2 | |
| Input Current (A, B) | IIN2 | 1 | mA | DE = 0, VCC = 0V or 3.6V, VIN = 12V | 2 | ||
| Input Current (A, B) | IIN2 | -0.8 | mA | DE = 0, VCC = 0V or 3.6V, VIN = -7V | 2 | ||
| Differential Input Threshold Voltage for Receiver | VTH | -0.2 | 0.2 | V | -7V ≤ VCM ≤ 12V | 2 | |
| Receiver Output HIGH Voltage | VOH | 2 | V | IO = -4mA, VID = 200mV | 2 | ||
| Receiver Output LOW Voltage | VOL | 0.4 | V | IO = 4mA, VID = -200mV | 2 | ||
| Three-State (High Impedance) Output Current at Receiver | IOZR | -1 | 1 | µA | VCC = Max, 0.4V ≤ VO ≤ 2.4V | 2 | |
| Receiver Input Resistance | RIN | 12 | kΩ | -7V ≤ VCM ≤ 12V | 2 | ||
| Supply Current (Output Enabled) | ICC | 400 | 600 | µA | No Load, Output Enabled | 2 | |
| Supply Current (Output Disabled) | ICC | 300 | 500 | µA | No Load, Output Disabled | 2 | |
| Supply Current in Shutdown Mode | ISHDN | 1 | 10 | µA | DE = 0, RE = VCC | 2 | |
| Driver Short-Circuit Current, VOUT = HIGH | IOSD1 | 35 | 250 | mA | -7V ≤ VO ≤ 12V | 3 | |
| Driver Short-Circuit Current, VOUT = LOW | IOSD2 | 35 | 250 | mA | -7V ≤ VO ≤ 12V | 3 | |
| Receiver Short-Circuit Current | IOSR | 7 | 85 | mA | 0V ≤ VO ≤ VCC | 3 | |
| Driver Input to Output (LOW to HIGH propagation delay) | tPLH | 25 | 50 | 80 | ns | RDIFF = 54Ω, CL1 = CL2 = 100pF, (Figures 3, 5) | 3 |
| Driver Input to Output (HIGH to LOW propagation delay) | tPHL | 25 | 50 | 80 | ns | RDIFF = 54Ω, CL1 = CL2 = 100pF, (Figures 3, 5) | 3 |
| Driver Output to Output Skew | tSKEW | 10 | 20 | ns | 3 | ||
| Driver Rise or Fall Time | tR, tF | 5 | 15 | 40 | ns | 3 | |
| Driver Enable to Output HIGH | tZH | 70 | 120 | ns | CL = 100pF (Figures 4, 6), S2 Closed | 3 | |
| Driver Enable to Output LOW | tZL | 70 | 120 | ns | CL = 100pF (Figures 4, 6), S1 Closed | 3 | |
| Driver Disable Time from LOW | tLZ | 70 | 120 | ns | CL = 15pF (Figures 4, 6), S1 Closed | 3 | |
| Driver Disable Time from HIGH | tHZ | 70 | 120 | ns | CL = 15pF (Figures 4, 6), S2 Closed | 3 | |
| Receiver Input to Output (LOW to HIGH propagation delay) | tPLH | 30 | 140 | 200 | ns | RDIFF = 54Ω, CL1 = CL2 = 100pF, (Figures 3, 7) | 3 |
| Receiver Input to Output (HIGH to LOW propagation delay) | tPHL | 30 | 140 | 200 | ns | RDIFF = 54Ω, CL1 = CL2 = 100pF, (Figures 3, 7) | 3 |
| Receiver Enable to Output LOW | tZL | 50 | 80 | ns | CRL = 15pF (Figures 2, 8), S1 Closed | 3 | |
| Receiver Enable to Output HIGH | tZH | 50 | 80 | ns | CRL = 15pF (Figures 2, 8), S2 Closed | 3 | |
| Receiver Disable from LOW | tLZ | 50 | 80 | ns | CRL = 15pF (Figures 2, 8), S1 Closed | 3 | |
| Receiver Disable from HIGH | tHZ | 50 | 80 | ns | CRL = 15pF (Figures 2, 8), S2 Closed | 3 | |
| Maximum Data Rate | fMAX | 2.5 | Mbits/s | 3 | |||
| Time to Shutdown | tSHDN | 50 | 200 | 600 | ns | DE = 0, RE = | 3 |
| Driver Enable from Shutdown to Output HIGH | tZH(SHDN) | 70 | 120 | ns | CL = 100pF (Figures 4, 6), S2 Closed | 3 | |
| Driver Enable from Shutdown to Output LOW | tZL(SHDN) | 70 | 120 | ns | CL = 100pF (Figures 4, 6), S1 Closed | 3 | |
| Receiver Enable from Shutdown to Output HIGH | tZH(SHDN) | 4500 | ns | CL = 15pF (Figures 2, 8), S2 Closed | 3 | ||
| Receiver Enable from Shutdown to Output LOW | tZL(SHDN) | 4500 | ns | CL = 15pF (Figures 2, 8), S1 Closed | 3 | ||
| Supply Voltage | VCC | 7 | V | 2 | |||
| Control Input Voltage | -0.3 | V | 2 | ||||
| Driver Input Voltage | -0.3 | V | 2 | ||||
| Driver Output Voltage | -14 | 14 | V | 2 | |||
| Receiver Input Voltage | -14 | 14 | V | 2 | |||
| Receiver Output Voltage | -0.3 | V | 2 | ||||
| Storage Temperature Range | -65 | 150 | °C | 2 | |||
| Lead Temperature (Soldering, 10 sec) | 300 | °C | 10 sec soldering | 2 | |||
| Maximum Junction Temperature | TJMAX | 125 | °C | 2 | |||
| Supply Voltage | VCC | 3 | 3.6 | V | 4 | ||
| Operating Temperature Range (LTC1480I) | -40 | 85 | °C | LTC1480I grade | 2 | ||
| Differential Input Hysteresis | ΔVTH | 70 | mV | VCM = 0V | 2 | ||
| Differential Receiver Skew | tSKD | 13 | ns | 3 | |||
| Thermal Resistance, Junction-to-Ambient | θJA | 150 | °C/W | S8 package | 2 |
CAD (KiCad official)
- Symbol:
LTC1480IS8#PBF - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SO-8 (KiCad packages3D, STEP)
- 3D model files:
ltc1480is8-pbf-etched.step/ltc1480is8-pbf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ltc1480is8-pbf.step/ltc1480is8-pbf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (8 pp, sha256
9b2ab66a05ae990f, retrieved 2026-10-31, tier: manufacturer) - 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).