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TP8485E-VR

Public Made by Adom

by adom

3PEAK Buffers, Drivers, Receivers, Transceivers, MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TP8485E-VR

3PEAK · Buffers, Drivers, Receivers, Transceivers · MSOP-8

TP8485E-VR from 3PEAK, 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 R output Receiver output; when the receiver is enabled (/RE low) it reflects the bus differential state, and it is high-impedance when /RE is high, with typical drive of 25 mA at VOL = 1 V.
2 /RE input Active-low receiver enable; driving it high disables the receiver output (R goes high-impedance).
3 DE input Active-high driver enable; driving it low disables the driver outputs (A/Y and B/Z go high-impedance), and the logic input is specified with VIH of 2 V min and VIL of 0.4 V max.
4 D input Driver data input; with DE high it sets the bus state (D high drives A/Y high and B/Z low), with logic thresholds VIH 2 V min and VIL 0.4 V max.
5 GND power_in Ground reference for the device supply, rated VDD to GND of -0.3 V to +7 V absolute maximum.
6 A/Y bidirectional Non-inverting RS-485 bus terminal (receiver input A and driver output Y), protected to ±12 kV HBM and rated for a bus common-mode range of -8 V to +13 V.
7 B/Z bidirectional Inverting RS-485 bus terminal (receiver input B and driver output Z), protected to ±12 kV HBM and rated for a bus common-mode range of -8 V to +13 V.
8 VCC power_in Supply voltage, specified from 3 V to 5.5 V.

Key specifications

Parameter Value
Manufacturer 3PEAK
Package MSOP-8
Category Logic
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
Driver differential-output voltage magnitude, RL=60Ω /VOD/ 2.6 V RL = 60 Ω, See Figure 1B, VCC = 5V 4
Driver differential-output voltage magnitude, RS-485 /VOD/ 2.1 2.5 V RL = 54 Ω with VA or VB from -7 to +12 V, VCC = 5V (RS-485), See Figure 1A 4
Driver differential-output voltage magnitude, RS-485 3V /VOD/ 1 1.5 V RL = 54 Ω with VA or VB from -7 to +12 V, VCC = 3V (RS-485) 4
Driver differential-output voltage magnitude, RS-422 /VOD/ 3 V RL = 100 Ω (RS-422) 4
Change in magnitude of driver differential-output voltage ⊿/VOD/ -0.2 -0.002 0.2 V RL = 54 Ω, CL=50 pF, VCC = 5V, See Figure 1A 4
Change in differential driver common-mode output voltage ⊿VOC 0.05 V 4
Peak-to-peak driver common-mode output voltage VOC(PP) 0.5 V 4
Positive-going receiver differential-input voltage threshold VIT+ -40 mV 4
Negative-going receiver differential-input voltage threshold VIT- -200 mV 4
Logic Input High Voltage VIH 2 V DI, DE, RE 4
Logic Input Low Voltage VIL 0.4 V DI, DE, RE 4
Receiver high-level output voltage VOH 4 4.5 V IOH= -8 mA 4
Receiver low-level output voltage VOL 0.2 0.4 V IOL= 8 mA 4
Driver input, driver enable and receiver enable input current II -2 0.01 2 μA 4
Receiver high-impedance output current IOZ -2 0.01 2 μA VO = 0 V or VCC, /RE at VCC 4
Driver short-circuit output current /IOS/ 75 80 115 mA │IOS│ with VA or VB from -7 to +12 V 4
Bus input current (driver disabled), VI=12 V II 100 150 μA VCC = 4.5 to 5.5 V or VCC = 0 V, DE at 0 V; VI= 12 V 4
Bus input current (driver disabled), VI=-7 V II -150 -80 μA VCC = 4.5 to 5.5 V or VCC = 0 V, DE at 0 V; VI= -7 V 4
Supply current (quiescent), driver and receiver enabled ICC 695 900 μA Driver and receiver enabled; DE = VCC, /RE = GND, No LOAD 4
Supply current (quiescent), driver enabled, receiver disabled ICC 270 350 μA Driver enabled, receiver disabled; DE = VCC, /RE = VCC, No LOAD 4
Supply current (quiescent), driver disabled, receiver enabled ICC 480 600 μA Driver disabled, receiver enabled; DE = GND, /RE = VCC, No LOAD 4
Supply current (quiescent), driver and receiver disabled ICC 1.4 5 μA Driver and receiver disabled; DE = GND, /RE = VCC, D= Vcc No LOAD 4
Driver differential-output rise and fall times tr, tf 620 ns RL = 54 Ω, CL=50pF, See Figure 2 5
Driver propagation delay tPHL, tPLH 340 ns 5
Driver pulse skew tSK(P) 23 ns /tPHL, tPLH/ 5
Driver disable time tPHZ, tPLZ 250 ns See Figure 3 5
Driver enable time, receiver enabled tPHZ, tPLZ 562 ns Receiver enabled 5
Driver enable time, receiver disabled tPHZ, tPLZ 562 ns Receiver disabled 5
Receiver output rise and fall times tr, tf 12.4 ns CL=15 pF, See Figure 5 5
Receiver propagation delay time tPHL, tPLH 960 ns 5
Receiver pulse skew tSK(P) 40 ns /tPHL, tPLH/ 5
Receiver disable time tPHZ, tPLZ 7 ns 5
Receiver enable time, driver enabled tPZL, tPZH 70 ns Driver enabled, See Figure 6 5
Receiver enable time, driver disabled tPZL, tPZH 989 ns Driver disabled, See Figure 6 5
ESD HBM, RS-485 bus pins (A, Y, B, Z, A/Y, B/Z) to GND -12 12 kV Human Body Model, From Bus Pins to GND 5
ESD HBM, all other pins -2 2 kV Human Body Model, per MIL-STD-883 5
VDD to GND VDD -0.3 7 V 3
Input voltages DI, DE, RE (max printed as VCC + 0.3V) -0.3 V Max printed as VCC + 0.3V 3
Input/output voltages A/Y, B/Z, A, B, Y, Z -9 14 V 3
Transient pulse A/Y, B/Z, A, B, Y, Z through 100Ω -100 100 V Through 100Ω, Note 1: TIA/EIA-485-A Section 4.2.6, ±100V for 15 μs at 1% duty cycle 3
RO output voltage (max printed as VCC + 0.3V) -0.3 V Max printed as VCC + 0.3V 3
Supply voltage 3 5.5 V 3
Temperature range -40 125 °C 3
Bus pin common mode voltage range -8 13 V 3
Maximum junction temperature (plastic package) 150 °C 3
Maximum storage temperature range -65 150 °C 3

CAD (KiCad official)

  • Symbol: TP8485E-VR
  • Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
  • 3D model: MSOP-8 (KiCad packages3D, STEP)
  • 3D model files: tp8485e-vr-etched.step / tp8485e-vr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tp8485e-vr.step / tp8485e-vr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: 3PEAK datasheet (15 pp, sha256 eddf614de77cf7ff, retrieved 2026-10-18, 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