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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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ltc1480is8-pbf.step / ltc1480is8-pbf.glb are 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, 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