My Inquiry
My Account
Texas Instruments TRS202ECNG4
- Part No.:
- TRS202ECNG4
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
TRS202ECNG4.pdf
- Description:
- IC TRANSCEIVER FULL 2/2 16PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,661
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TRS202ECNG4 from Texas Instruments is a dual RS-232 line driver and receiver IC operating from a single 5-V supply, delivering ±9-V driver output swing, 120-kbit/s data rate, and ±15-kV IEC 61000-4-2 air-gap ESD protection on RS-232 pins. It integrates a charge-pump voltage generator and supports full-duplex serial communication in battery-powered portable systems.
For engineers reviewing the TRS202ECNG4 datasheet, TRS202ECNG4 pinout, TRS202ECNG4 application, or TRS202ECNG4 equivalent, this device is selected for compact RS-232 interface design where high ESD robustness, low external component count (four 0.1-µF capacitors), and logic-level compatibility with UARTs are required.
Technical Context
The TRS202ECNG4 implements two independent RS-232 drivers and receivers with integrated charge-pump circuitry generating ±VCC-derived voltages using four external capacitors. Its receiver inputs tolerate ±30 V and feature Schmitt-trigger inputs with 0.2–1-V hysteresis and internal 5-kΩ pull-downs.
Driver outputs deliver ±9-V swing into 3-kΩ loads with 3–30 V/µs slew rate control; propagation delays are ≤2 µs (driver) and ≤10 µs (receiver). The device operates across 0 to 70°C ambient temperature and draws 8–15 mA supply current at 5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Enables direct connection to standard 5-V logic rails without regulation overhead. |
| Data Rate | Up to 120 kbit/s - Supports legacy and embedded RS-232 applications including modem handshaking and industrial diagnostics. |
| Driver Output Swing | ±9 V min - Meets TIA/EIA-232-F voltage compliance for reliable long-cable or noisy-environment signaling. |
| ESD Protection | ±15-kV IEC 61000-4-2 air-gap - Protects RS-232 bus pins (7, 8, 13, 14, 15) against real-world electrostatic discharge events. |
| Receiver Input Range | ±30 V - Allows safe operation with floating, miswired, or faulted RS-232 lines without latch-up or damage. |
| Propagation Delay (Driver) | ≤2 µs - Ensures timing margin for synchronous UART interfaces at maximum data rate. |
| Capacitor Requirement | Four 0.1-µF ceramic capacitors - Minimizes board space and BOM cost versus older RS-232 transceivers requiring larger values. |
Pinout & Package
TSSOP-16 (PW) package: 5 mm × 6.4 mm body, 0.65-mm lead pitch, surface-mount, RoHS-compliant, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 C1+ | Charge-pump capacitor node | Positive terminal of first flying capacitor; connects to 0.1-µF ceramic capacitor for voltage doubling. |
| 2 V+ | Charge-pump positive output | Provides +2×VCC rail for driver stage; not intended for external load connection. |
| 3 C1− | Charge-pump capacitor node | Negative terminal of first flying capacitor; completes charge-transfer path for V+ generation. |
| 4 C2+ | Charge-pump capacitor node | Positive terminal of second flying capacitor; enables negative voltage generation via charge inversion. |
| 5 C2− | Charge-pump capacitor node | Negative terminal of second flying capacitor; forms inverting charge-pump stage for V−. |
| 6 V− | Charge-pump negative output | Provides −2×VCC rail for driver stage; isolated from system ground and logic circuits. |
| 7 DOUT2 | RS-232 driver output | Second RS-232 transmit line (T2OUT); swings ±9 V relative to GND for remote device reception. |
| 8 RIN2 | RS-232 receiver input | Second RS-232 receive line (R2IN); accepts ±30 V input and converts to TTL/CMOS logic levels. |
| 9 ROUT2 | Logic-level receiver output | Second logic output (R2OUT); drives UART RX pin with 3.5–VCC−0.4 V high level and <0.4 V low level. |
| 10 DIN2 | Logic-level driver input | Second logic input (T2IN); accepts 0–5 V TTL/CMOS signals; no internal pull-up-must be driven. |
| 11 DIN1 | Logic-level driver input | First logic input (T1IN); identical electrical behavior to DIN2; enables dual-channel full-duplex operation. |
| 12 ROUT1 | Logic-level receiver output | First logic output (R1OUT); compatible with standard UART RX inputs; open-fail-safe (high when unconnected). |
| 13 RIN1 | RS-232 receiver input | First RS-232 receive line (R1IN); electrically identical to RIN2; supports hot-plug and floating-line resilience. |
| 14 DOUT1 | RS-232 driver output | First RS-232 transmit line (T1OUT); provides primary serial transmit path with ±9-V compliance. |
| 15 GND | Signal and power reference | Common return for logic, charge pump, and RS-232 sections; requires low-impedance PCB plane for ESD performance. |
| 16 VCC | Primary power supply | 5-V input pin; bypassed internally and externally to suppress charge-pump switching noise on logic domain. |
Key Features
| Feature | Design Value |
|---|---|
| Dual full-duplex RS-232 channel | Enables simultaneous TX/RX on two independent serial ports-ideal for multi-interface embedded controllers. |
| Integrated charge-pump generator | Eliminates need for ±12-V supplies; operates from single 5-V rail using only four 0.1-µF capacitors. |
| IEC 61000-4-2 Level 4 ESD protection | Guarantees ±15-kV air-gap and ±8-kV contact discharge survival on all RS-232 pins without external TVS diodes. |
| Schmitt-trigger receiver inputs | Provides 0.2–1-V hysteresis to reject noise on long cables and prevent chatter during slow signal transitions. |
| Fail-safe open-input detection | ROUT outputs high when RIN is disconnected or driven off-prevents spurious UART framing errors. |
Applications
| Industrial Serial Gateway | Medical Handheld Diagnostics |
|---|---|
Use Scenario: Isolating and converting UART signals from microcontrollers to legacy RS-232 field devices in factory automation panels. IC Role / Device Role / Timing Role: Dual-channel level translator and ESD-hardened physical layer interface between 3.3/5-V logic and ±12-V RS-232 buses. Use Value: Eliminates external DC-DC converters and discrete protection components while maintaining 120-kbit/s throughput and >15-kV ESD immunity. |
Use Scenario: Enabling wired serial communication between portable diagnostic instruments and PC-based analysis software. IC Role / Device Role / Timing Role: RS-232 transceiver providing logic-to-line conversion and robust ESD protection for handheld device USB-to-serial adapters. Use Value: Reduces bill-of-materials by integrating charge pump and protection, and ensures regulatory compliance for medical EMC testing per IEC 60601-1-2. |
| Point-of-Sale Terminal Interface | Test & Measurement Equipment |
Use Scenario: Connecting barcode scanners, receipt printers, and magnetic stripe readers to embedded POS controllers via RS-232. IC Role / Device Role / Timing Role: Dual-port line driver/receiver handling both host-initiated commands and peripheral responses in full-duplex mode. Use Value: Supports hot-plug operation and withstands repeated cable insertion/disconnection events due to ±15-kV HBM and IEC ESD ratings. |
Use Scenario: Providing configurable serial debug and configuration ports on benchtop oscilloscopes and signal generators. IC Role / Device Role / Timing Role: Robust physical-layer interface ensuring reliable firmware updates and instrument control over RS-232 despite lab ESD environments. Use Value: Maintains signal integrity up to 120 kbit/s with ≤2-µs driver delay and failsafe receiver behavior during probe contact or grounding anomalies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RS-232 transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3232ESE+ | Higher ICC (1 mA typical), ±15-kV ESD, same 5-V supply and 120-kbit/s rating; uses different capacitor topology (charge-pump with internal regulation). | Preferred in high-reliability industrial designs requiring tighter output voltage tolerance (±5.5 V min) and lower quiescent current at light load. | Select MAX3232ESE+ when tighter driver output regulation and lower standby current are critical; verify layout compatibility with its 16-pin SOIC footprint. |
| SP3232EEN-L | Same 5-V operation and 120-kbit/s speed; ±15-kV ESD; slightly higher driver output resistance (400 Ω vs 300 Ω); 0.1-µF capacitor requirement identical. | Better suited for cost-sensitive consumer electronics where TI's thermal metrics (RθJA = 107.5°C/W) are less constraining than Exar's (RθJA = 90°C/W). | Choose SP3232EEN-L for price-driven volume production where identical functional specs and pinout allow drop-in substitution in TSSOP-16 layouts. |
Compared with TRS202ECNG4, MAX3232ESE+ offers tighter output voltage control but requires different capacitor placement, while SP3232EEN-L matches pinout and capacitor count exactly but trades marginal thermal performance for lower unit cost in high-volume deployments.
Availability
TRS202ECNG4 is available at Aetrix Electronics and suitable for industrial serial gateways, medical handheld diagnostics, point-of-sale terminals, and test & measurement equipment requiring stable component supply and guaranteed long-term sourcing.
Supply support for TRS202ECNG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with over 90 years of innovation in industrial, automotive, and communications markets.
The TRS202ECNG4 belongs to TI's RS-232 interface product line, engineered for compact, low-power, ESD-hardened serial communication in portable and space-constrained embedded systems.
FAQ
What is the operating temperature range for the TRS202ECNG4?
The TRS202ECNG4 is rated for an operating free-air temperature range of 0°C to 70°C. This commercial-grade specification aligns with its TRS202EC part marking and makes it suitable for indoor industrial and consumer applications where ambient conditions remain within this band. The device's thermal metrics-including RθJA = 107.5°C/W for the TSSOP-16 package-are validated across this full range.
Does the TRS202ECNG4 require external resistors for RS-232 termination?
No, the TRS202ECNG4 does not require external termination resistors. Its drivers are designed to drive standard RS-232 loads (3-kΩ to 7-kΩ) directly, and its receivers include internal 5-kΩ pull-downs. External resistors are unnecessary unless implementing custom fail-safe biasing or specialized cable equalization-neither of which is specified or recommended in the TRS202ECNG4 datasheet.
Can the TRS202ECNG4 operate with 3.3-V logic inputs?
Yes, the TRS202ECNG4 accepts 3.3-V logic inputs on its DIN pins. Its driver input thresholds are VIH = 2 V min and VIL = 0.8 V max at VCC = 5 V, fully compatible with 3.3-V CMOS/TTL logic levels. No level-shifting circuitry is needed, simplifying integration with mixed-voltage systems where the host MCU operates at 3.3 V while the TRS202ECNG4 runs from 5 V.
How many external capacitors does the TRS202ECNG4 need, and what values are supported?
The TRS202ECNG4 requires exactly four external capacitors-C1+, C1−, C2+, and C2−-to enable its charge-pump voltage generator. Both 0.1-µF and 1-µF ceramic capacitors are supported per TI's datasheet; 0.1-µF is the minimum recommended value, and 1-µF improves ripple suppression under heavy load. Polarized capacitors must be oriented per the pinout diagram.
Is the TRS202ECNG4 pin-compatible with other members of the TRS202E family?
Yes, the TRS202ECNG4 shares identical pinout and functionality with all TRS202E variants in the TSSOP-16 (PW) package, including TRS202ECPWR and TRS202EIPWRG4. Differences among these parts relate solely to temperature grade (commercial 0–70°C vs industrial −40–85°C) and packaging markings-not electrical behavior, pin assignment, or layout requirements.
TRS202ECNG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Type:
- Transceiver
- Protocol:
- RS232
- Number of Drivers/Receivers:
- 2/2
- Duplex:
- Full
- Receiver Hysteresis:
- 500 mV
- Data Rate:
- 120Kbps
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
TRS202ECNG4 FAQ
1.How can I place an order for TRS202ECNG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TRS202ECNG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TRS202ECNG4 reliable?
The price and inventory of TRS202ECNG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TRS202ECNG4 is usually 5 days.
3.What payment methods are accepted for TRS202ECNG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TRS202ECNG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TRS202ECNG4?
TRS202ECNG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TRS202ECNG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TRS202ECNG4?
For technical support, including TRS202ECNG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TRS202ECNG4 requirements.
6.How does Aetrix verify that TRS202ECNG4 is sourced from the original manufacturer or authorized distributors?
All TRS202ECNG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TRS202ECNG4 meets industry standards.
7.What is the process for return or replacement of TRS202ECNG4?
All TRS202ECNG4 units undergo pre-shipment inspection (PSI). If there is an issue with TRS202ECNG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TRS202ECNG4 part is unused and in its original packaging.
Return procedure for TRS202ECNG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TRS202ECNG4 Tags
-
ATA6561-GAQW-N
Microchip Technology
-
ATA6561-GBQW-N
Microchip Technology
-
AM26LS32ACDR
Texas Instruments
-
SP485CN-L/TR
MaxLinear, Inc.
-
SP485EN-L/TR
MaxLinear, Inc.
-
SP485EEN-L/TR
MaxLinear, Inc.
-
SP485ECN-L/TR
MaxLinear, Inc.
-
THVD1400DR
Texas Instruments
-
AM26C31IDR
Texas Instruments
-
TLIN1021ADRQ1
Texas Instruments
-
MAX232IDR
Texas Instruments
-
AM26C32IDR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
