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HT3232EERZ

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HTCSEMI RS232 ICs, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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HT3232EERZ

HTCSEMI · RS232 ICs · SOP-16

HT3232EERZ from HTCSEMI, in a SOP-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 C1+ passive Positive terminal of the first charge-pump capacitor, using a 0.1 µF external capacitor for 3.3 V operation.
2 V+ power_out Doubled-voltage charge-pump terminal with absolute maximum (VCC − 0.3) to 7 V, where
3 C1- passive Negative terminal of the first charge-pump capacitor.
4 C2+ passive Positive terminal of the second charge-pump capacitor.
5 C2- passive Negative terminal of the second charge-pump capacitor.
6 V- power_out Inverted-voltage charge-pump terminal with absolute maximum -0.3 to -7 V, where
7 T2OUT output Second RS-232 transmitter output with absolute maximum range ±13.2 V, minimum swing ±5 V at VCC = 5 V and ±3.5 V at VCC = 3.3 V into a 3 kΩ load, and short-circuit current of ±60 mA.
8 R2IN input Second RS-232 receiver input with an operating range of ±25 V and input resistance of 3 kΩ to 7 kΩ.
9 R2OUT output Second TTL/CMOS receiver output with VOL maximum of 0.4 V and VOH of VCC − 0.6 V to VCC − 0.1 V at 3.3 V, and range −0.3 V to (VCC + 0.3) V.
10 T2IN input Second TTL/CMOS transmitter input with logic-low threshold of 0.8 V maximum and logic-high threshold of 2 V (3.3 V) or 2.4 V (5 V), absolute range -0.3 V to 6 V.
11 T1IN input First TTL/CMOS transmitter input with logic-low threshold of 0.8 V maximum and logic-high threshold of 2 V (3.3 V) or 2.4 V (5 V), absolute range -0.3 V to 6 V.
12 R1OUT output First TTL/CMOS receiver output with VOL maximum of 0.4 V and VOH of VCC − 0.6 V to VCC − 0.1 V at 3.3 V, and range −0.3 V to (VCC + 0.3) V.
13 R1IN input First RS-232 receiver input with an operating range of ±25 V and input resistance of 3 kΩ to 7 kΩ.
14 T1OUT output First RS-232 transmitter output with absolute maximum range ±13.2 V, minimum swing ±5 V at VCC = 5 V and ±3.5 V at VCC = 3.3 V into a 3 kΩ load, and short-circuit current of ±60 mA.
15 GND power_in Ground reference for the device.
16 VCC power_in Supply voltage of 3.3 V to 5.5 V per the electrical characteristics, with absolute maximum range -0.3 V to 6 V.

Key specifications

Parameter Value
Manufacturer HTCSEMI
Package SOP-16
Category Interface
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 (absolute maximum) VCC -0.3 6 V 2
Doubled Voltage Terminal (absolute maximum) V+ 7 V Printed as (VCC - 0.3) to 7 V; lower bound is an expression and is not stored 2
Inverted Voltage Terminal (absolute maximum) V- -7 0.3 V Printed as 0.3 to -7 V; sign on 0.3 appears missing 2
V+ + /V-/ (absolute maximum) V+ +/V-/ 13 V 2
Transmitter Input Voltage Range (absolute maximum) TIN -0.3 6 V 2
Receiver Input Voltage Range (absolute maximum) RIN -25 25 V 2
Transmitter Output Voltage Range (absolute maximum) TOUT -13.2 13.2 V 2
Receiver Output Voltage Range (absolute maximum) ROUT -0.3 V Upper bound printed as (VCC + 0.3) and not stored 2
Storage Temperature (absolute maximum) Ts -60 150 °C 2
Operating Temperature Range TA -40 125 °C For all packages 1
Supply Voltage (electrical test range) VCC 3.3 5.5 V Electrical characteristics test condition C1-C4 = 0.1 µF 3
VCC Power Supply Current, 3.3 V ISUPPLY 2.5 5 mA No Load VCC = 3.3V ±10% TA = 25°C 3
VCC Power Supply Current, 5 V ISUPPLY 6 10 mA No Load VCC = 5V ±10% TA = 25°C 3
Input Logic Threshold Low VTIL 0.8 V T-IN (Note 1) 3
Input Logic Threshold High, VCC = 3.3 V VTIH 2 V VCC = 3.3V 3
Input Logic Threshold High, VCC = 5 V VTIH 2.4 V VCC = 5V 3
Input Leakage Current IIL -1 0.01 1 µA T-IN 3
Transmitter Output Voltage Swing, VCC = 5.0 V VTOUT 5 5.4 V All transmitter outputs loaded with 3KΩ to GND, VCC = 5.0V; printed ±5 / ±5.4 3
Transmitter Output Voltage Swing, VCC = 3.3 V VTOUT 3.5 4 V All transmitter outputs loaded with 3KΩ to GND, VCC = 3.3V; printed ±3.5 / ±4.0 3
Transmitter Output Resistance RTOUT 300 10 Ω (max in MΩ) VCC = V+ = V- = 0V VOUT = ±2V; max printed as 10M Ω 3
Output Short Circuit Current ITSC -60 60 mA VCC = 3.3V to 5V VOUT = 0V; printed ±60 mA 3
Receiver Input Voltage Operating Range VRIN -25 25 V 3
RS-232 Input Threshold Low, VCC = 3.3 V VRIL 0.6 1.2 V TA = 25°C VCC = 3.3V 3
RS-232 Input Threshold Low, VCC = 5 V VRIL 0.8 1.5 V TA = 25°C VCC = 5V 3
RS-232 Input Threshold High, VCC = 3.3 V VRIH 1.5 2.4 V TA = 25°C VCC = 3.3V 3
RS-232 Input Threshold High, VCC = 5 V VRIH 1.8 2.4 V TA = 25°C VCC = 5V 3
Input Hysteresis VRIHYS 0.3 V 3
Input Resistance RRIN 3 5 7 kΩ TA = 25°C 3
TTL/CMOS Output Voltage Low VROL 0.4 V IOUT = 1.6mA VCC = 3.3V 3
Data Transfer Rate DR 120 Kbps RL = 3KΩ CL2= 1000pF one transmitter switching VCC=3.3V 4
Propagation Delay Input to Output, receiver tPHLR, tPLHR 4 9.7 µs RXIN = RXOUT CL = 150pF 4
Propagation Delay Input to Output, transmitter tPHLT, tPLHT 2 5 µs RL = 3KΩ CL = 2500pF 4
Receiver Propagation Delay Difference /tPHLR - tPLHR/ 300 ns 4
Transmitter Propagation Delay Difference /tPHLT - tPLHT/ 300 ns 4
Transition Slew Rate SRT 3 30 V/µs TA = 25°C RL = 3KΩ to 7KΩ VCC = 3.3V measured from +3V to -3V or -3V to +3V CL = 150pF to 1000pF 4

CAD (KiCad official)

  • Symbol: HT3232EERZ
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOP-16 (KiCad packages3D, STEP)
  • 3D model files: ht3232eerz-etched.step / ht3232eerz-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ht3232eerz.step / ht3232eerz.glb are the bare package body.

Provenance

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

  • Datasheet: HTCSEMI datasheet (13 pp, sha256 ea733c936d856ec6, 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