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HT8574ARSZ

Public Made by Adom

by adom

HTCSEMI Pre-ordered Products, SSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Symbol & Footprint

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Datasheet

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Contents

README

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HT8574ARSZ

HTCSEMI · Pre-ordered Products · SSOP-16

HT8574ARSZ from HTCSEMI, in a SSOP-16. 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 A0 input Address input 0, hardware address pin with input leakage of ±250 nA max and VIH of 0.7VDD min.
2 A1 input Address input 1, hardware address pin with input leakage of ±250 nA max and VIH of 0.7VDD min.
3 A2 input Address input 2, hardware address pin with input leakage of ±250 nA max and VIH of 0.7VDD min.
4 P0 bidirectional Quasi-bidirectional I/O 0, HIGH at power-on, usable as input or output without a direction control signal.
5 P1 bidirectional Quasi-bidirectional I/O 1, HIGH at power-on, usable as input or output without a direction control signal.
6 P2 bidirectional Quasi-bidirectional I/O 2, HIGH at power-on, usable as input or output without a direction control signal.
7 P3 bidirectional Quasi-bidirectional I/O 3, HIGH at power-on, usable as input or output without a direction control signal.
8 VSS power_in Supply ground (0 V).
9 P4 bidirectional Quasi-bidirectional I/O 4, HIGH at power-on, usable as input or output without a direction control signal.
10 P5 bidirectional Quasi-bidirectional I/O 5, HIGH at power-on, usable as input or output without a direction control signal.
11 P6 bidirectional Quasi-bidirectional I/O 6, HIGH at power-on, usable as input or output without a direction control signal.
12 P7 bidirectional Quasi-bidirectional I/O 7, HIGH at power-on, usable as input or output without a direction control signal.
13 INT output Open-drain active-LOW interrupt output, sinks 1.6 mA min at VOL = 0.4 V.
14 SCL input Serial clock line of the I2C-bus, up to 100 kHz, needs a pull-up resistor to the positive supply.
15 SDA bidirectional Serial data line of the I2C-bus, open-drain with 3 mA min sink at VOL = 0.4 V, needs a pull-up resistor.
16 VDD power_in Supply voltage, 2.5 to 6 V operating range.

Key specifications

Parameter Value
Manufacturer HTCSEMI
Package SSOP-16
Category Electronic Tools/Instruments/Consumables
Pins 16

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 VDD 2.5 6 V 12
Supply current, operating IDD 40 100 µA operating mode; VDD = 6 V; no load; VI = VDD or VSS; fSCL = 100 kHz 12
Standby current Istb 2.5 10 µA standby mode; VDD = 6 V; no load; VI = VDD or VSS 12
Power-on reset voltage VPOR 1.3 2.4 V VDD = 6 V; no load; VI = VDD or VSS 12
LOW level output current (SCL, SDA) IOL 3 mA VOL = 0.4 V 12
Leakage current (SCL, SDA) IL -1 1 µA VI = VDD or VSS 12
Input capacitance (SCL, SDA) Ci 7 pF VI = VSS 12
Max input current through protection diode (I/Os) IIHL(max) 400 µA VI ≥ VDD or VI ≤ VSS 13
LOW level output current (I/Os) IOL 10 25 mA VOL = 1 V; VDD = 5 V 13
HIGH level output current (I/Os) IOH 30 300 µA VOH = VSS 13
Transient pull-up current IOHt 1 mA HIGH during acknowledge (see Fig.15); VOH = VSS; VDD = 2.5 V 13
Input capacitance (I/Os) Ci 10 pF 13
Output capacitance (I/Os) Co 10 pF 13
Output data valid tpv 4 µs CL ≤ 100 pF 13
Input data set-up time tsu 0 µs CL ≤ 100 pF 13
Input data hold time th 4 µs CL ≤ 100 pF 13
LOW level output current (INT) IOL 1.6 mA VOL = 0.4 V 13
Leakage current (INT) IL -1 1 µA VI = VDD or VSS 13
Input data valid time tiv 4 µs CL ≤ 100 pF 13
Reset delay time tir 4 µs CL ≤ 100 pF 13
Input leakage current (A0 to A2) ILI -250 250 nA pin at VDD or VSS 13
SCL clock frequency fSCL 100 kHz 14
Tolerable spike width on bus tSW 100 ns 14
Bus free time tBUF 4.7 µs 14
START condition set-up time tSU;STA 4.7 µs 14
START condition hold time tHD;STA 4 µs 14
SCL LOW time tLOW 4.7 µs 14
SCL HIGH time tHIGH 4 µs 14
SCL and SDA rise time tr 1 µs 14
SCL and SDA fall time tf 0.3 µs 14
Data set-up time tSU;DAT 250 ns 14
Data hold time tHD;DAT 0 ns 14
SCL LOW to data out valid tVD;DAT 3.4 µs 14
STOP condition set-up time tSU;STO 4 µs 14
Supply voltage VDD -0.5 7 V 12
DC input current II 20 mA 12
DC output current IO 25 mA 12
Supply current IDD 100 mA 12
Total power dissipation Ptot 400 mW 12
Power dissipation per output PO 100 mW 12
Storage temperature Tstg -65 150 °C 12
Ambient temperature Tamb -40 85 °C 12

CAD (KiCad official)

  • Symbol: HT8574ARSZ
  • Footprint: Package_SO:SSOP-16_5.3x6.2mm_P0.65mm
  • 3D model: SSOP-16 (KiCad packages3D, STEP)
  • 3D model files: ht8574arsz-etched.step / ht8574arsz-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ht8574arsz.step / ht8574arsz.glb are the bare package body.

Provenance

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

  • Datasheet: HTCSEMI datasheet (20 pp, sha256 69724f7996dc35d5, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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