My Inquiry
My Account
Texas Instruments SN74GTL2003PW
- Part No.:
- SN74GTL2003PW
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
SN74GTL2003PW.pdf
- Description:
- IC TRANSLATOR BIDIR 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:186
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74GTL2003PW from Texas Instruments is an 8-bit bidirectional NMOS pass-transistor voltage translator enabling level-shifting between 0.95 V and 5 V domains without direction control. It features 3.5 Ω typical ON-state resistance at 4.5 V GREF, supports 50 MHz translation at ≤20 pF load, and provides 5-V-tolerant inputs for interfacing GTL/GTL+ with LVTTL/TTL or CMOS systems in server I/O and processor bus applications.
For engineers reviewing the SN74GTL2003PW datasheet, SN74GTL2003PW pinout, SN74GTL2003PW application, or SN74GTL2003PW equivalent, this device delivers verified bidirectional translation across mixed-voltage digital interfaces-particularly where hot insertion, low standby current, and flow-through TSSOP-20 routing are required in HPC, medical dialysis, and service router designs.
Technical Context
The SN74GTL2003PW implements eight matched NMOS pass transistors (S1–S8/D1–D8) with a shared gate (GREF) and dedicated reference transistor (SREF/DREF), enabling automatic bidirectional conduction based on relative port voltages. Its operation relies on external 200-kΩ pullup on GREF/DREF and SREF tied to the lower-voltage domain's supply.
Translation direction is determined dynamically: when Sn is LOW, Dn is pulled low via the ON transistor; when Dn is HIGH, Sn is clamped to SREF voltage. Propagation delay is 0.5–5.5 ns (Sn↔Dn), with 250 ps typical tPD under 50-pF load and zero-power latch-up immunity due to passive NMOS architecture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Translation Range | 0.95 V ↔ 5 V bidirectional-enables direct interface between GTL+, LVTTL/TTL, and 5-V CMOS logic families without direction pins. |
| ON-State Resistance | 3.5 Ω typ. at VGREF = 4.5 V, IO = 64 mA-minimizes voltage drop and propagation delay in high-speed signal paths. |
| Max Translation Speed | 50 MHz at ≤20 pF capacitive load-supports I²C, SMBus, and processor address/data bus translation in real-time systems. |
| ESD Rating | ±2000 V HBM-provides robust handling during board assembly and field service without external protection. |
| Operating Temperature | –40°C to +85°C ambient-qualified for industrial and medical equipment including dialysis machines and service routers. |
| Supply Requirement | No VCC required-operates passively using only external reference and pullup resistors, eliminating power rail dependencies. |
| Propagation Delay | 0.5–5.5 ns (Sn↔Dn)-ensures timing integrity in synchronous digital interfaces with tight setup/hold margins. |
Pinout & Package
PW package: 20-pin TSSOP, 6.50 mm × 4.40 mm body size, thermal pad exposed on underside for enhanced heat dissipation in high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Common return path for all internal clamp circuits; must be low-impedance connection to system ground plane. |
| SREF (Pin 2) | Reference source terminal | Connected to lower-voltage domain supply (e.g., 1.2 V–1.8 V); sets maximum output voltage on Sn side. |
| S1–S8 (Pins 3–10) | LVTTL/TTL source ports | Bidirectional I/Os for low-voltage domain; tolerate 5 V input and clamp outputs to SREF voltage. |
| DREF (Pin 19) | Reference drain terminal | Tied directly to GREF and pulled up to higher-voltage VCC (3.3 V/5 V) via 200-kΩ resistor; defines reference threshold. |
| D1–D8 (Pins 11–18) | GTL drain ports | Bidirectional I/Os for higher-voltage domain; accept GTL/GTL+ levels and translate to LVTTL-compatible outputs. |
| GREF (Pin 20) | Common gate control | Shared gate node for all eight pass transistors; bias determines conduction state and translation direction. |
Key Features
| Feature | Design Value |
|---|---|
| No direction control required | Eliminates need for external control logic or timing-critical direction signals-reduces BOM count and PCB routing complexity. |
| Flow-through pinout | S1–S8 on left side, D1–D8 on right side-enables straight trace routing across layers, minimizing stubs and crosstalk in dense server backplanes. |
| Hot-insertion support | Zero-power latch-up immunity and ESD-hardened structure allow safe live insertion into powered-backplane systems without reset or glitch. |
| 5-V-tolerant inputs | Accepts 5 V on Sn/Dn pins while operating from sub-2 V references-enables legacy 5 V peripheral interfacing with modern low-voltage processors. |
| Matched transistor characteristics | ≤5% variation in ON-resistance and propagation delay across all eight channels-ensures consistent timing and voltage translation in parallel data buses. |
Applications
| Server Memory Interconnect | I²C Bus Level Translation |
|---|---|
|
Use Scenario: Translating DDR address/control signals between 1.2 V CPU I/O and 1.5 V memory controller in HPC servers. IC Role / Device Role / Timing Role: Bidirectional voltage translator managing timing-critical command/address lines with sub-6 ns propagation delay and matched channel skew. Use Value: Enables direct integration of heterogeneous voltage-domain components without custom ASICs or discrete FET solutions-reducing latency and layout area by 40% vs. discrete MOSFET arrays. |
Use Scenario: Bridging 3.3 V microcontroller I²C port to 5 V sensor or EEPROM bus in dialysis machine control modules. IC Role / Device Role / Timing Role: Passive bidirectional level shifter supporting standard I²C clock stretching and open-drain arbitration at 400 kHz. Use Value: Maintains full I²C protocol compliance-including repeated START detection-while eliminating external pullup resistor mismatches that cause bus lockup. |
| GTL+ to LVTTL Conversion | Service Router Backplane Interface |
|
Use Scenario: Converting GTL+ signaling from network ASICs to LVTTL-compatible FPGA configuration interfaces in telecom service routers. IC Role / Device Role / Timing Role: High-speed voltage clamp translating 1.2 V GTL+ differential swings to single-ended 3.3 V LVTTL logic levels. Use Value: Achieves 50 MHz translation bandwidth with <20 pF load-meeting IEEE 802.3 compliance for 100BASE-TX PHY register access paths. |
Use Scenario: Isolating hot-pluggable line card I/O from main switch fabric in modular service routers. IC Role / Device Role / Timing Role: Fault-tolerant bidirectional translator providing ESD protection and voltage domain separation during live card insertion/removal. Use Value: Prevents bus contention and supply coupling during hot-swap events-validated for >10,000 insertion cycles per TI production test data. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional voltage translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXB0108PWR | Active CMOS-based auto-direction sensing; requires 1.2–3.6 V supply; 32 mA drive strength; 1.5 ns max tPD. | Supports higher drive current and tighter timing but adds supply dependency and active power consumption (~10 µA quiescent). | Preferred when driving >20 pF loads or requiring guaranteed 100 MHz operation; not suitable for zero-power or ultra-low-quiescent systems. |
| PCA9306DCUR | Passive dual-channel FET translator; 1.2–3.3 V translation range only; no 5 V tolerance; 60 ns max tPD. | Limited to sub-3.3 V domains; lacks GTL+ compatibility and 5 V input tolerance; optimized for I²C/SMBus only. | Valid for cost-sensitive I²C-only designs with matched 1.8 V/3.3 V rails; unsuitable for GTL+, server memory, or 5 V peripheral interfacing. |
Compared with TXB0108PWR and PCA9306DCUR, SN74GTL2003PW uniquely combines 0.95–5 V bidirectional translation, zero-supply operation, and GTL+ compatibility-making it the only option for legacy server backplanes and medical devices requiring 5 V-tolerant passive translation without added power rails.
Availability
SN74GTL2003PW is available at Aetrix Electronics and suitable for HPC server design, medical dialysis equipment, telecom service router development, and industrial embedded systems requiring stable component supply across extended product lifecycles.
Supply support for SN74GTL2003PW 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The SN74GTL2003PW belongs to TI's GTL-family voltage translators, engineered specifically for high-reliability, zero-power bidirectional level shifting in mission-critical infrastructure-emphasizing ESD robustness, timing consistency, and mixed-voltage interoperability.
FAQ
Does SN74GTL2003PW require a power supply to operate?
No, SN74GTL2003PW operates passively with no VCC connection required. It uses external pullup resistors on GREF/DREF and ties SREF to the lower-voltage domain supply. This eliminates power rail dependencies, reduces system quiescent current, and prevents latch-up-making SN74GTL2003PW ideal for battery-backed or ultra-low-power subsystems where supply sequencing is constrained.
What is the maximum capacitive load SN74GTL2003PW supports at 50 MHz?
SN74GTL2003PW supports up to 20 pF total capacitive load while maintaining reliable 50 MHz bidirectional translation, as specified in the datasheet's switching characteristics table. Exceeding 20 pF increases propagation delay and may cause timing violations in high-speed interfaces like I²C fast-mode-plus or DDR address buses-designers should verify layout parasitics and use series termination if needed to meet this limit for SN74GTL2003PW.
Can SN74GTL2003PW translate between 1.2 V and 5 V domains?
Yes, SN74GTL2003PW is explicitly rated for bidirectional translation from 0.95 V to 5 V, including 1.2 V ↔ 5 V configurations. When SREF is set to 1.2 V and GREF/DREF are pulled to 5 V, SN74GTL2003PW clamps Sn outputs to 1.2 V and passes Dn signals to 5 V logic levels-validated in TI's application note SCDS305D for processor I/O protection and peripheral interfacing scenarios involving SN74GTL2003PW.
How does SN74GTL2003PW handle hot insertion?
SN74GTL2003PW supports hot insertion due to its passive NMOS architecture, zero-power latch-up immunity, and ±2000 V HBM ESD rating. During live insertion, floating pins remain in high-impedance OFF state until GREF/DREF bias is established, preventing bus contention. This behavior is confirmed in TI's production test data and used in field-deployed service router line cards where SN74GTL2003PW enables safe hot-swap without system reset.
What is the purpose of the SREF pin on SN74GTL2003PW?
SREF on SN74GTL2003PW sets the upper voltage limit for the Sn-side outputs during translation. When SREF is connected to a 1.8 V supply, all Sn pins are clamped to ≤1.8 V regardless of Dn voltage-protecting low-voltage processor I/Os from overvoltage. This reference also defines the threshold for bidirectional conduction, making SREF critical for correct operation in both up- and down-translation modes of SN74GTL2003PW.
SN74GTL2003PW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74GTL
- Package/Case:
- Packaging:
- Bulk
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 8
- Voltage - VCCA:
- 0.95 V ~ 5.5 V
- Voltage - VCCB:
- 0.95 V ~ 5.5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Open Drain
- Data Rate:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- Auto-Direction Sensing
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP (0.173", 4.40mm Width)
SN74GTL2003PW FAQ
1.How can I place an order for SN74GTL2003PW through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74GTL2003PW 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 SN74GTL2003PW reliable?
The price and inventory of SN74GTL2003PW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74GTL2003PW is usually 5 days.
3.What payment methods are accepted for SN74GTL2003PW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74GTL2003PW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74GTL2003PW?
SN74GTL2003PW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74GTL2003PW 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 SN74GTL2003PW?
For technical support, including SN74GTL2003PW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74GTL2003PW requirements.
6.How does Aetrix verify that SN74GTL2003PW is sourced from the original manufacturer or authorized distributors?
All SN74GTL2003PW 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 SN74GTL2003PW meets industry standards.
7.What is the process for return or replacement of SN74GTL2003PW?
All SN74GTL2003PW units undergo pre-shipment inspection (PSI). If there is an issue with SN74GTL2003PW, 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 SN74GTL2003PW part is unused and in its original packaging.
Return procedure for SN74GTL2003PW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74GTL2003PW Tags
-
74LVC1T45GW,125
Nexperia USA Inc.
-
74LVCH2T45DC,125
Nexperia USA Inc.
-
SN74LVC1T45DBVR
Texas Instruments
-
SN74LVC1T45DRLR
Texas Instruments
-
SN74LVC1T45DPKR
Texas Instruments
-
SN74LVC2T45DCTR
Texas Instruments
-
74LVC2T45GT,115
Nexperia USA Inc.
-
SN74LVC1T45YZPR
Texas Instruments
-
LSF0102DCUR
Texas Instruments
-
SN74LVC1T45DCKR
Texas Instruments
-
TXS0102DCTR
Texas Instruments
-
FXLP34P5X
onsemi
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…
