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A1454KLETR-4N-T

Public Made by Adom

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Allegro MicroSystems, LLC Hall Sensor, TSSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentsensorsa1454kletr-4n-tfactory-2.0.0extractor-text

Verified A1454KLETR-4N-T

by Ray · last 6 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

6 Nov 2026RayPublished by the parts factory: tier lcsc, 8 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: A1454KLETR-4N-T · TSSOP-8 · 8 pins
  • ✓copper: 8 copper pads, none touching another net
  • ✓datasheet: all 8 pin names found in the 15-page datasheet
  • ✓distributor: lcsc C3716106, digikey 620-1737-2-ND, mouser 250-A1454KLETR-4N-T
  • ✓family: TSSOP-8_4.4x3mm_P0.65mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-5lwr1ylb/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.14)
  • ✓pads: 8 pins = 8 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 8 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ a1454kletr-4n-t.kicad_sym✓ a1454kletr-4n-t.kicad_mod✓ a1454kletr-4n-t.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 4h ago
viewers a1454kletr-4n-t: viewers · Ray 4h ago
a1454kletr-4n-t-etched.glb Publish 0.1.0 · Ray 4h ago
a1454kletr-4n-t-etched.step a1454kletr-4n-t: factory component page (tier=lcsc) · Ray 4h ago
a1454kletr-4n-t-hero.glb a1454kletr-4n-t: hero GLB from the etched model (keeps the MPN mark) · Ray 4h ago
a1454kletr-4n-t-hero.overlay.json Publish 0.1.0 · Ray 4h ago
a1454kletr-4n-t.glb Publish 0.1.0 · Ray 4h ago
a1454kletr-4n-t.kicad_mod Publish 0.1.0 · Ray 4h ago
a1454kletr-4n-t.kicad_sym Publish 0.1.0 · Ray 4h ago
a1454kletr-4n-t.lbr Publish 0.1.0 · Ray 4h ago
a1454kletr-4n-t.step Publish 0.1.0 · Ray 4h ago
package.json Publish 0.1.0 · Ray 4h ago
page.json Set visibility: public · Ray 4h ago
README.md Publish 0.1.0 · Ray 4h ago
verification.json Verified: Published by the parts factory: tier lcsc, 8 pins · Ray 4h ago

A1454KLETR-4N-T

Allegro MicroSystems, LLC · Hall Sensor · TSSOP-8

A1454KLETR-4N-T from Allegro MicroSystems, LLC, in a TSSOP-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 VCC power_in Device supply voltage pin; normal operation is specified from 2.65 V to 3.5 V (3.0 V typical), with a forward supply absolute maximum rating of 5.0 V.
2 ADR0 input Address select pin 0; its voltage, as a fraction of VCC, sets the I2C device address bits per Table 9, with an input resistance of 0.8 to 1.2 MΩ.
3 GND power_in Device ground pin.
4 NC unconnected No connection.
5 NC unconnected No connection.
6 ADR1 input Address select pin 1; its voltage, as a fraction of VCC, sets the I2C device address bits per Table 9, with an input resistance of 0.8 to 1.2 MΩ.
7 SDA bidirectional I2C serial data line operating as an open-drain input/output, with a forward voltage limit of 5.5 V, a VOL maximum of 0.36 V at 1.5 mA, and a total bus capacitance limit of 100 pF.
8 SCL input I2C serial clock input driven by the master, with a forward voltage limit of 5.5 V and a clock frequency up to 400 kHz.

Key specifications

Parameter Value
Manufacturer Allegro MicroSystems, LLC
Package TSSOP-8
Category Sensors
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
Forward Supply Voltage VCC 5 V 2
Reverse Supply Voltage VRCC -0.1 V 2
Forward SCL Pin Voltage VI2C(SCL) 5.5 V 2
Forward SDA Pin Voltage VI2C(SDA) 5.5 V 2
Reverse SCL and SDA Voltage VRI2C -0.1 V 2
Operating Ambient Temperature TA -40 125 °C Range K 2
Maximum Junction Temperature TJ(max) 165 °C 2
Storage Temperature Tstg -65 170 °C 2
Supply Voltage, Normal Operation VCC 2.65 3 3.5 V Normal Operation 3
Supply Voltage, EEPROM programming VCC 2.8 3.5 V EEPROM programming 3
Supply Current, Active mode ICC 2 5 mA VCC = VCC(max), Active mode 3
Supply Current, Sleep mode ICC 0.2 1 µA VCC = VCC(max), Sleep mode 3
Supply Current, EEPROM programming occurring ICC 2 5 mA VCC = VCC(max), EEPROM programming occurring 3
Number of EEPROM Writes 1000 writes Number of times the EEPROM can be written 3
Address Value 0 Reference VADDR0 0 0.1 × VCC ADR0, ADR1 Pins 3
Address Value 1 Reference VADDR1 0.23 0.33 0.43 × VCC ADR0, ADR1 Pins 3
Address Value 2 Reference VADDR2 0.57 0.67 0.77 × VCC ADR0, ADR1 Pins 3
Address Value 3 Reference VADDR3 0.9 0.1 × VCC ADR0, ADR1 Pins 3
Address Pin Input Resistance RIN 0.8 1 1.2 MΩ ADR0, ADR1 Pins 3
Factory-Programmed Quiescent Voltage Output QVO -10 10 LSB Valid at TA = 25°C, VCC = 3.0 V, CBYPASS = 0.1 µF 4
Linearity Sensitivity Error LinERR -1 1 % Valid at TA = 25°C, VCC = 3.0 V, CBYPASS = 0.1 µF 4
Sensitivity Error versus Temperature SensErr -3 3 % TA = -40°C to 85°C 4
Sensitivity Error versus Temperature SensErr -6 6 % TA = -40°C to 125°C 4
Bus Free Time Between Stop and Start tBUF 1.3 µs Valid at TA = 25°C, VCC = 3.0 V, REXT = 10 kΩ 5
Hold Time Start Condition thdSTA 0.6 µs Valid at TA = 25°C, VCC = 3.0 V, REXT = 10 kΩ 5
Setup Time for Repeated Start Condition tsuSTA 0.6 µs Valid at TA = 25°C, VCC = 3.0 V, REXT = 10 kΩ 5
SCL Low Time tLOW 1.3 µs Valid at TA = 25°C, VCC = 3.0 V, REXT = 10 kΩ 5
SCL High Time tHIGH 0.6 µs Valid at TA = 25°C, VCC = 3.0 V, REXT = 10 kΩ 5
Data Setup Time tsuDAT 100 ns Valid at TA = 25°C, VCC = 3.0 V, REXT = 10 kΩ 5
Data Hold Time thdDAT 0 900 ns Valid at TA = 25°C, VCC = 3.0 V, REXT = 10 kΩ 5
Setup Time for Stop Condition tsuSTO 0.6 µs Valid at TA = 25°C, VCC = 3.0 V, REXT = 10 kΩ 5
Logic Input Low Level (SDA, SCL pins) VIL 30 %VCC Valid at TA = 25°C, VCC = 3.0 V, REXT = 10 kΩ 5
Logic Input High Level (SDA, SCL pins) VIH 70 %VCC Valid at TA = 25°C, VCC = 3.0 V, REXT = 10 kΩ 5
Logic Input Current IIN -1 0 1 µA VIN = 0 V to VCC 5
Output Voltage (SDA pin) VOL 0.36 V ILOAD = 1.5 mA 5
Clock Frequency (SCL pin) fCLK 400 kHz Valid at TA = 25°C, VCC = 3.0 V, REXT = 10 kΩ 5
Output Fall Time (SDA pin) tf 250 ns REXT = 10 kΩ, CB = 100 pF 5
I2C Pull-Up Resistance REXT 2.4 10 kΩ Valid at TA = 25°C, VCC = 3.0 V, REXT = 10 kΩ 5
Total Capacitive Load for Each of SDA and SCL Buses CB 100 pF Valid at TA = 25°C, VCC = 3.0 V, REXT = 10 kΩ 5
Package Thermal Resistance RθJA 137 °C/W On single-layer PCB with copper limited to solder pads 2

CAD (KiCad official)

  • Symbol: A1454KLETR-4N-T
  • Footprint: Package_SO:TSSOP-8_4.4x3mm_P0.65mm
  • 3D model: TSSOP-8 (KiCad packages3D, STEP)
  • 3D model files: a1454kletr-4n-t-etched.step / a1454kletr-4n-t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); a1454kletr-4n-t.step / a1454kletr-4n-t.glb are the bare package body.

Provenance

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

  • Datasheet: Allegro MicroSystems, LLC datasheet (15 pp, sha256 1ce4853de1f896d5, retrieved 2026-11-06, 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