Specifications
| Type | Description |
|---|---|
| Part Number | MAX232DR |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | SOIC (D), 16 pins, 9.9 mm × 6 mm |
| Interface Standard Compliance | Meets or exceeds TIA/EIA-232-F and ITU V.28; Device feature |
| Number of Drivers | 2; Device feature |
| Number of Receivers | 2; Device feature |
| Nominal Supply Voltage | 5 V; Single-supply operation |
| Charge Pump Capacitors | 1 µF; External capacitors C1-C4 |
| Maximum Data Rate | 120 kbit/s; One TOUT switching |
| Receiver Input Voltage Capability | ±30 V; R1IN, R2IN |
| Typical Receiver Threshold | 1.3 V; Receiver input threshold, typical description |
| Typical Receiver Hysteresis | 0.5 V; Receiver input hysteresis, typical description |
| Supply Current | 8 mA typ, 10 mA max; VCC = 5.5 V, all outputs open, TA = 25°C |
| Recommended Supply Voltage | 4.5 V min, 5 V nom, 5.5 V max; VCC |
| Recommended High-Level Input Voltage | 2 V min; T1IN, T2IN |
| Recommended Low-Level Input Voltage | 0.8 V max; T1IN, T2IN |
| Recommended Receiver Input Voltage | ±30 V; R1IN, R2IN |
| Operating Free-Air Temperature, MAX232 | 0°C to 70°C; MAX232 |
| Operating Free-Air Temperature, MAX232I | -40°C to 85°C; MAX232I |
| Absolute Maximum Input Supply Voltage | -0.3 V to 6 V; VCC, over operating free-air temperature range |
| Absolute Maximum Positive Output Supply Voltage | VCC - 0.3 V to 15 V; VS+ |
| Absolute Maximum Negative Output Supply Voltage | -0.3 V to -15 V; VS- |
| Absolute Maximum Logic Input Voltage | -0.3 V to VCC + 0.3 V; T1IN, T2IN |
| Absolute Maximum Receiver Input Voltage | ±30 V; R1IN, R2IN |
| Absolute Maximum Driver Output Voltage | VS- - 0.3 V to VS+ + 0.3 V; T1OUT, T2OUT |
| Absolute Maximum Receiver Output Voltage | -0.3 V to VCC + 0.3 V; R1OUT, R2OUT |
| Driver Output Short-Circuit Duration | Unlimited; T1OUT, T2OUT |
| Operating Virtual Junction Temperature | 150°C max; TJ |
| Storage Temperature Range | -65°C to 150°C; Tstg |
| ESD Rating HBM | 2000 V max; Human body model, ANSI/ESDA/JEDEC JS-001, all pins |
| ESD Rating CDM | 1000 V max; Charged device model, JEDEC JESD22-C101, all pins |
| Driver High-Level Output Voltage | 5 V min, 7 V typ; T1OUT, T2OUT; RL = 3 kΩ to GND |
| Driver Low-Level Output Voltage | -7 V typ, -5 V max; T1OUT, T2OUT; RL = 3 kΩ to GND |
| Driver Output Resistance | 300 Ω min; T1OUT, T2OUT; VS+ = VS- = 0, VO = ±2 V |
| Driver Short-Circuit Output Current | ±10 mA typ; T1OUT, T2OUT; VCC = 5.5 V, VO = 0 V |
| Driver Short-Circuit Input Current | 200 µA max; T1IN, T2IN; VI = 0 |
| Receiver High-Level Output Voltage | 3.5 V min; R1OUT, R2OUT; IOH = -1 mA |
| Receiver Low-Level Output Voltage | 0.4 V max; R1OUT, R2OUT; IOL = 3.2 mA |
| Receiver Positive-Going Input Threshold Voltage | 1.7 V typ, 2.4 V max; R1IN, R2IN; VCC = 5 V, TA = 25°C |
| Receiver Negative-Going Input Threshold Voltage | 0.8 V min, 1.2 V typ; R1IN, R2IN; VCC = 5 V, TA = 25°C |
| Receiver Input Hysteresis Voltage | 0.2 V min, 0.5 V typ, 1 V max; R1IN, R2IN; VCC = 5 V |
| Receiver Input Resistance | 3 kΩ min, 5 kΩ typ, 7 kΩ max; R1IN, R2IN; VCC = 5 V, TA = 25°C |
| Driver Slew Rate | 30 V/µs max; RL = 3 kΩ to 7 kΩ, Figure 6-2 |
| Driver Transition Region Slew Rate | 3 V/µs min; Figure 6-3 |
| Receiver Propagation Delay Low-to-High | 500 ns typ; TTL load, Figure 6-1 |
| Receiver Propagation Delay High-to-Low | 500 ns typ; TTL load, Figure 6-1 |
| Junction-to-Ambient Thermal Resistance | 84.6°C/W; SOIC (D), 16 pins |
| Junction-to-Case Top Thermal Resistance | 43.5°C/W; SOIC (D), 16 pins |
| Junction-to-Board Thermal Resistance | 43.2°C/W; SOIC (D), 16 pins |
| Datasheet Status | request_only |
Product Overview
MAX232DR is a Texas Instruments dual EIA-232 driver receiver for Signal_Chain interface applications. The device integrates two drivers and two receivers and meets or exceeds TIA/EIA-232-F and ITU V.28 requirements, supporting EIA-232 serial signal translation with TTL-side transmitter inputs and receiver outputs.
The device is specified for single-supply 5 V operation with a recommended VCC range of 4.5 V to 5.5 V. External charge-pump capacitors C1 through C4 are 1 µF. Electrical characteristics include a 120 kbit/s maximum data rate with one TOUT switching, 8 mA typical and 10 mA maximum supply current at VCC = 5.5 V with outputs open, and ±30 V capability on R1IN and R2IN.
The MAX232DR package is SOIC (D), 16 pins, measuring 9.9 mm × 6 mm. Thermal data for this package includes 84.6°C/W junction-to-ambient resistance, 43.5°C/W junction-to-case top resistance, and 43.2°C/W junction-to-board resistance. Applications are centered on EIA-232 serial communication links requiring two driver and two receiver channels.
Key Features
- Dual EIA-232 interface with two drivers and two receivers
- Meets or exceeds TIA/EIA-232-F and ITU V.28
- Single-supply operation at nominal 5 V
- Uses 1 µF external charge-pump capacitors C1-C4
- Supports 120 kbit/s maximum data rate
- Receiver inputs support ±30 V capability
- Typical receiver threshold described as 1.3 V
- Typical receiver hysteresis described as 0.5 V
- Driver outputs rated for unlimited short-circuit duration
- Receiver propagation delay is 500 ns typical both directions
Typical Applications
- EIA-232 serial interface translation
- Two-channel driver receiver links
- TTL-to-EIA-232 signal conversion
- 5 V serial communication designs
- Systems using SOIC-16 assembly
- Interfaces requiring ±30 V receiver inputs
Procurement Notes
When requesting a quote for MAX232DR, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What type of interface device is MAX232DR?
MAX232DR is a Texas Instruments dual EIA-232 driver receiver in the Signal_Chain category. It includes two drivers and two receivers and meets or exceeds TIA/EIA-232-F and ITU V.28 requirements.
What supply voltage does MAX232DR use?
MAX232DR is specified for single-supply operation at a nominal 5 V. The recommended VCC range is 4.5 V minimum, 5 V nominal, and 5.5 V maximum.
What package is used for MAX232DR?
MAX232DR is supplied in a SOIC (D), 16-pin package measuring 9.9 mm × 6 mm. For that package, the listed junction-to-ambient thermal resistance is 84.6°C/W.
What receiver input range is specified for MAX232DR?
The receiver input capability for R1IN and R2IN is ±30 V. The recommended receiver input voltage and absolute maximum receiver input voltage are also listed as ±30 V.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.