component
HT8232RSZ
Public Made by Adomby adom
HTCSEMI USB Converters, SSOP-28-208mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownHT8232RSZ
HTCSEMI · USB Converters · SSOP-28-208mil
HT8232RSZ from HTCSEMI, in a SSOP-28-208mil. 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 | TXD | output | Transmit asynchronous data output of the UART interface. |
| 2 | DTR# | output | Data Terminal Ready control output and handshake signal. |
| 3 | RTS# | output | Request To Send control output and handshake signal. |
| 4 | VCCIO | power_in | Supply of +1.8V to +5.25V for the UART interface and CBUS group pins; connect to 3V3OUT for 3.3V drive, to VCC for 5V CMOS drive, or to an external 1.8V to 2.8V supply for lower output levels. |
| 5 | RXD | input | Receive asynchronous data input of the UART interface. |
| 6 | RI# | input | Ring Indicator control input; when remote wake-up is enabled in the internal EEPROM, taking RI# low resumes the PC USB host controller from suspend. |
| 7 | GND | power_in | Device ground supply pin. |
| 8 | NC | unconnected | No internal connection. |
| 9 | DSR# | input | Data Set Ready control input and handshake signal. |
| 10 | DCD# | input | Data Carrier Detect control input. |
| 11 | CTS# | input | Clear to Send control input and handshake signal. |
| 12 | CBUS4 | bidirectional | Configurable CBUS I/O pin whose function is set in the internal EEPROM; factory default is SLEEP#. |
| 13 | CBUS2 | bidirectional | Configurable CBUS I/O pin whose function is set in the internal EEPROM; factory default is TXDEN. |
| 14 | CBUS3 | bidirectional | Configurable CBUS I/O pin whose function is set in the internal EEPROM; factory default is PWREN#. |
| 15 | USBDP | bidirectional | USB Data Signal Plus, incorporating an internal series resistor and a 1.5kΩ pull-up resistor to 3.3V. |
| 16 | USBDM | bidirectional | USB Data Signal Minus, incorporating an internal series resistor. |
| 17 | 3V3OUT | power_out | 3.3V output from the integrated LDO regulator that should be decoupled to ground with 100nF; up to 50mA can be drawn to power external logic. |
| 18 | GND | power_in | Device ground supply pin. |
| 19 | RESET# | input | Can be driven by an external device to reset the HT8232R; if not required it can be left unconnected or pulled up to VCCIO. |
| 20 | VCC | power_in | 3.3V to 5.25V supply to the device core. |
| 21 | GND | power_in | Device ground supply pin. |
| 22 | CBUS1 | bidirectional | Configurable CBUS I/O pin whose function is set in the internal EEPROM; factory default is RXLED#. |
| 23 | CBUS0 | bidirectional | Configurable CBUS I/O pin whose function is set in the internal EEPROM; factory default is TXLED#. |
| 24 | NC | unconnected | No internal connection. |
| 25 | AGND | power_in | Device analog ground supply for the internal clock multiplier. |
| 26 | TEST | input | Puts the device into IC test mode and must be tied to GND for normal operation. |
| 27 | OSCI | input | Input to the 12MHz oscillator cell; optional and can be left unconnected for normal operation. |
| 28 | OSCO | output | Output from the 12MHz oscillator cell; optional and can be left unconnected for normal operation when the internal oscillator is used. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HTCSEMI |
| Package | SSOP-28-208mil |
| Category | Interface |
| Pins | 28 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Vcc Supply Voltage | Vcc | -0.5 | 6 | V | 13 | ||
| Power Dissipation | 500 | mW | Vcc = 5.25V | 13 | |||
| Storage Temperature | -65 | 150 | °C | 13 | |||
| Ambient Temperature (Power Applied) | -40 | 85 | °C | 13 | |||
| D.C. Input Voltage - USBDP and USBDM | -0.5 | 3.8 | V | 13 | |||
| D.C. Input Voltage - High Impedance Bidirectionals | -0.5 | V | Printed max is +(Vcc +0.5) V; not numeric | 13 | |||
| D.C. Input Voltage - All other Inputs | -0.5 | V | Printed max is +(Vcc +0.5) V; not numeric | 13 | |||
| D.C. Output Current - Outputs | 24 | mA | 13 | ||||
| DC Output Current - Low Impedance Bidirectionals | 24 | mA | 13 | ||||
| VCC Operating Supply Voltage | Vcc1 | 3.3 | 5.25 | V | 13 | ||
| VCCIO Operating Supply Voltage | Vcc2 | 1.8 | 5.25 | V | 13 | ||
| Operating Supply Current | Icc2 | 50 | 70 | 100 | μA | USB Suspend | 13 |
| Output Voltage High | Voh | 3.2 | 4.1 | 4.9 | V | VCCIO = 5.0V, Standard Drive Level; I source = 2mA | 13 |
| Output Voltage Low | Vol | 0.3 | 0.4 | 0.6 | V | VCCIO = 5.0V, Standard Drive Level; I sink = 2mA | 13 |
| Input Switching Threshold | Vin | 1.3 | 1.6 | 1.9 | V | VCCIO = 5.0V, Standard Drive Level; ** (internal 200kΩ pull-up to VCCIO) | 13 |
| Input Switching Hysteresis | VHys | 50 | 55 | 60 | mV | VCCIO = 5.0V, Standard Drive Level; ** (internal 200kΩ pull-up to VCCIO) | 13 |
| Output Voltage High | Voh | 2.2 | 2.7 | 3.2 | V | VCCIO = 3.3V, Standard Drive Level; I source = 1mA | 13 |
| Output Voltage Low | Vol | 0.3 | 0.4 | 0.5 | V | VCCIO = 3.3V, Standard Drive Level; I sink = 2mA | 13 |
| Input Switching Threshold | Vin | 1 | 1.2 | 1.5 | V | VCCIO = 3.3V, Standard Drive Level; ** (internal 200kΩ pull-up to VCCIO) | 13 |
| Input Switching Hysteresis | VHys | 20 | 25 | 30 | mV | VCCIO = 3.3V, Standard Drive Level; ** (internal 200kΩ pull-up to VCCIO) | 13 |
| Output Voltage High | Voh | 2.1 | 2.6 | 3.1 | V | VCCIO = 2.8V, Standard Drive Level; I source = 1mA | 14 |
| Output Voltage Low | Vol | 0.3 | 0.4 | 0.5 | V | VCCIO = 2.8V, Standard Drive Level; I sink = 2mA | 14 |
| Input Switching Threshold | Vin | 1 | 1.2 | 1.5 | V | VCCIO = 2.8V, Standard Drive Level; ** (internal 200kΩ pull-up to VCCIO) | 14 |
| Input Switching Hysteresis | VHys | 20 | 25 | 30 | mV | VCCIO = 2.8V, Standard Drive Level; ** (internal 200kΩ pull-up to VCCIO) | 14 |
| Output Voltage High | Voh | 3.2 | 4.1 | 4.9 | V | VCCIO = 5.0V, High Drive Level; I source = 6mA | 14 |
| Output Voltage Low | Vol | 0.3 | 0.4 | 0.6 | V | VCCIO = 5.0V, High Drive Level; I sink = 6mA | 14 |
| Input Switching Threshold | Vin | 1.3 | 1.6 | 1.9 | V | VCCIO = 5.0V, High Drive Level; ** (internal 200kΩ pull-up to VCCIO) | 14 |
| Input Switching Hysteresis | VHys | 50 | 55 | 60 | mV | VCCIO = 5.0V, High Drive Level; ** (internal 200kΩ pull-up to VCCIO) | 14 |
| Output Voltage High | Voh | 2.2 | 2.8 | 3.2 | V | VCCIO = 3.3V, High Drive Level; I source = 3mA | 14 |
| Output Voltage High | Voh | 2.1 | 2.8 | 3.2 | V | VCCIO = 2.8V, High Drive Level; I source = 3mA | 14 |
| Input Switching Threshold (RESET# and TEST pins) | Vin | 1.3 | 1.6 | 1.9 | V | 14 | |
| Input Switching Hysteresis (RESET# and TEST pins) | VHys | 50 | 55 | 60 | mV | 14 | |
| I/O Pins Static Output (High) | UVoh | 2.8 | 3.6 | V | RI = 1.5kΩ to 3V3Out (D+); RI = 15kΩ to GND (D-) | 14 | |
| I/O Pins Static Output (Low) | UVol | 0 | 0.3 | V | RI = 1.5kΩ to 3V3Out (D+); RI = 15kΩ to GND (D-) | 14 | |
| Single Ended Rx Threshold | UVse | 0.8 | 2 | V | 14 | ||
| Differential Common Mode | UCom | 0.8 | 2.5 | V | 14 | ||
| Differential Input Sensitivity | UVDif | 0.2 | V | 14 | |||
| Driver Output Impedance | UDrvZ | 26 | 29 | 44 | Ohms | *** includes internal USB series resistors on USBDP and USBDM | 14 |
| Oscillator Output Voltage High (OSCO) | Voh | 2.8 | 3.6 | V | Fosc = 12MHz; optional, only if external oscillator used | 14 | |
| Oscillator Output Voltage Low (OSCO) | Vol | 0.1 | 1 | V | Fosc = 12MHz; optional, only if external oscillator used | 14 | |
| Oscillator Input Switching Threshold (OSCI) | Vin | 1.8 | 2.5 | 3.2 | V | optional, only if external oscillator used | 14 |
| Frequency of Operation (internal clock) | 11.98 | 12 | 12.02 | MHz | Equivalent to +/-1667ppm (footnote ****) | 15 | |
| Clock Period | 83.19 | 83.33 | 83.47 | ns | 15 | ||
| Duty Cycle | 45 | 50 | 55 | % | 15 |
CAD (KiCad official)
- Symbol:
HT8232RSZ - Footprint:
Package_SO:SSOP-28_5.3x10.2mm_P0.65mm - 3D model: SSOP-28-208mil (KiCad packages3D, STEP)
- 3D model files:
ht8232rsz-etched.step/ht8232rsz-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ht8232rsz.step/ht8232rsz.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HTCSEMI datasheet (24 pp, sha256
d860d0a63dee4a37, retrieved 2026-10-18, tier: lcsc) - 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).