My Inquiry
My Account
Texas Instruments SN74GTLP1395DWE4
- Part No.:
- SN74GTLP1395DWE4
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
SN74GTLP1395DWE4.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,467
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74GTLP1395DWE4 from Texas Instruments is a dual 1-bit LVTTL-to-GTLP bidirectional bus transceiver with split LVTTL port, adjustable edge-rate control (ERC), selectable polarity, and feedback path for diagnostics. It provides high-drive GTLP outputs (100 mA), 5-V-tolerant LVTTL I/O, and supports live insertion via Ioff, power-up 3-state, and BIAS VCC. It is designed for IEEE 1394 backplane physical-layer interfacing in distributed-load backplanes.
For engineers reviewing the SN74GTLP1395DWE4 datasheet, SN74GTLP1395DWE4 pinout, SN74GTLP1395DWE4 application, or SN74GTLP1395DWE4 equivalent, key selection considerations include GTLP/LVTTL level translation capability, ERC-controlled rise/fall times (1.3–3.0 ns), split-port feedback architecture, 3.3-V operation with 1.5-V GTLP termination, and SOIC-20 (DW) package compatibility with industrial backplane timing integrity requirements.
Technical Context
This device implements two independent 1-bit transceivers, each with separate A (LVTTL input), B (GTLP I/O), and Y (LVTTL output) terminals, enabling true bidirectional signal flow with polarity inversion and isolated control per channel. The split LVTTL port (A/Y) provides real-time feedback for diagnostics without interrupting B-port data transfer.
TI-OPC™ circuitry actively limits overshoot on unevenly loaded backplanes, while OEC™ improves signal integrity and reduces EMI. Edge-rate control via ERC pin selects fast (ERC = L) or slow (ERC = H) GTLP output transitions to optimize data rate vs. signal integrity across varying distributed loads down to 11 Ω equivalent impedance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VCC) | 3.15 V to 3.45 V - ensures stable 3.3-V system operation with ±4.5% tolerance |
| GTLP Output Drive | 100 mA sink - enables incident-wave switching on heavily loaded backplanes (Zeq ≥ 11 Ω) |
| LVTTL I/O Drive | ±24 mA - compatible with TTL/5-V CMOS logic while operating at 3.3 V |
| Propagation Delay (A→B, Fast) | Typ. 3.8 ns into RLC load - supports >100 Mbps backplane data rates with low skew |
| Rise/Fall Time (B port) | 1.0 ns / 2.0 ns (Fast), 1.5 ns / 2.6 ns (Slow) - adjustable via ERC pin for noise/speed trade-off |
| Live Insertion Support | Ioff < 10 µA at VCC = 0 V - prevents backflow current during hot-plug events |
| Input Tolerance | LVTTL ports 5-V tolerant - allows direct interface with legacy 5-V controllers without level shifters |
Pinout & Package
SN74GTLP1395DWE4 is packaged in a 20-pin SOIC (DW) body with 0.65-mm pitch, 7.5-mm width, and JEDEC MS-013AC compliant footprint. Pin assignments are validated per TI SCES349C datasheet (Rev. November 2001), top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1Y, 3Y | LVTTL output (feedback path) | Provides mirrored or inverted A-port data for real-time diagnostics and control monitoring |
| 1A, 2A, 1B, 2B | Data I/O (LVTTL input / GTLP I/O) | Independent 1-bit channels: A = LVTTL side, B = GTLP backplane side |
| 1OEAB, 2OEAB | GTLP output-enable (active-low) | Controls B-port driver state; high = high-Z, low = active drive to backplane |
| 1OEBY, 2OEBY | LVTTL output-enable (active-low) | Enables/disables Y-port feedback output independently of B-port activity |
| 1T/C, 2T/C | Polarity control (true/complement select) | High = transparent mode (A→B, B→Y); low = inverted mode (¬A→B, ¬B→Y) |
| ERC | Edge-rate control input | Low = fast edges (1.0/2.0 ns), high = slow edges (1.5/2.6 ns) for optimal signal integrity |
| VREF | B-port differential reference voltage | Set to 1.0 V for GTLP operation; defines GTLP input threshold (VREF ± 0.05 V) |
| BIAS VCC | Backplane I/O precharge supply | Preconditions B-port pins during live insertion to prevent disturbance of active backplane signals |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable edge-rate control (ERC) | Two discrete slew-rate settings allow system-level optimization of GTLP rise/fall times for specific backplane loading and noise margin |
| Split LVTTL port with feedback path | Independent A (input) and Y (output) pins per channel enable real-time loopback monitoring without disrupting B-port data flow |
| TI-OPC™ and OEC™ circuitry | Actively suppresses overshoot on unterminated or unevenly loaded backplanes and minimizes bus settling time for higher throughput |
| 5-V-tolerant LVTTL interfaces | Eliminates need for external level translators when interfacing with legacy 5-V microcontrollers or FPGAs |
| Live-insertion support (Ioff, power-up 3-state, BIAS VCC) | Enables hot-plug capability in modular backplane systems without risk of data corruption or hardware damage |
Applications
| IEEE 1394 Backplane PHY Interface | Diagnostics & Control Monitoring |
|---|---|
Use Scenario: Interfacing TI TSB14AA1 or similar 1394 backplane PHY controllers to a parallel backplane carrying primary clock/data signals. IC Role / Device Role / Timing Role: Translates LVTTL-level strobe and data signals from PHY to GTLP levels for reliable transmission across multi-slot backplanes at 25–100 Mbps. Use Value: Enables full IEEE 1394 backplane compliance with deterministic latency (<6 ns A→B propagation), low skew (<0.4 ns), and robust signal integrity on distributed RLC loads. |
Use Scenario: Providing real-time visibility into backplane signal health during system bring-up, field maintenance, or firmware updates. IC Role / Device Role / Timing Role: Uses split A/Y port architecture to mirror or invert B-port traffic for external logic analyzers or supervisory MCUs without interrupting live data flow. Use Value: Delivers non-intrusive diagnostics with sub-10 ns feedback delay and polarity-selectable output for protocol-aware monitoring. |
| Hot-Pluggable Modular Backplane | High-Speed Clock Distribution |
Use Scenario: Supporting live insertion/removal of daughter cards in telecom or industrial chassis where uninterrupted backplane operation is mandatory. IC Role / Device Role / Timing Role: Implements Ioff, power-up 3-state, and BIAS VCC to isolate powered-down cards and precondition B-port pins before VCC ramp-up. Use Value: Prevents bus contention, signal disturbance, and current backflow-ensuring zero packet loss during card swaps in mission-critical systems. |
Use Scenario: Distributing primary/secondary clocks (e.g., 1394 REFCLK, ATM read/write clocks) across multiple slots with matched skew and minimal jitter. IC Role / Device Role / Timing Role: Functions as a low-skew, high-drive clock buffer translating LVTTL clock sources to GTLP-compatible levels for backplane fanout. Use Value: Achieves <0.4 ns inter-channel skew and <3.8 ns max A→B delay, supporting synchronous multi-slot timing at 100+ MHz equivalent rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LVTTL-to-GTLP bidirectional transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74GTLP1394DWE4 | Single 2-bit transceiver (vs. dual 1-bit); no split A/Y feedback path; no polarity control | Suitable for simpler point-to-point GTLP links without diagnostic monitoring or polarity inversion needs | Choose when feedback path and per-channel polarity are unnecessary and board space favors 2-bit integration |
| SN74GTLP1396DWE4 | Includes integrated VREF generator (vs. external VREF required); same pinout and core functionality | Reduces external component count in new designs but requires layout revision if replacing SN74GTLP1395DWE4 | Prefer for green-field designs where VREF sourcing complexity must be minimized; not drop-in compatible due to internal VREF routing |
Compared with SN74GTLP1394DWE4 and SN74GTLP1396DWE4, the SN74GTLP1395DWE4 uniquely delivers per-channel polarity selection and dedicated A/Y feedback paths-critical for IEEE 1394 PHY diagnostics and flexible backplane control architectures-while maintaining identical SOIC-20 packaging and GTLP timing performance.
Availability
SN74GTLP1395DWE4 is available at Aetrix Electronics and suitable for IEEE 1394 backplane PHY interfacing, hot-pluggable modular chassis design, and high-speed clock distribution requiring stable component supply and long-term industrial lifecycle support.
Supply support for SN74GTLP1395DWE4 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 50 years of innovation in high-speed interface solutions.
The SN74GTLP1395DWE4 belongs to TI's GTLP family of backplane transceivers, engineered specifically for robust signal integrity, live insertion, and interoperability with IEEE 1394 and other high-speed parallel backplane standards.
FAQ
What is the function of the ERC pin on the SN74GTLP1395DWE4?
The ERC (Edge-Rate Control) pin on the SN74GTLP1395DWE4 selects between two discrete GTLP output slew rates: ERC = L enables fast edges (1.0 ns rise / 2.0 ns fall), while ERC = H enables slow edges (1.5 ns rise / 2.6 ns fall). This adjustment optimizes signal integrity versus data rate for specific backplane loading conditions, directly impacting noise margin and maximum achievable throughput in distributed RLC environments. The SN74GTLP1395DWE4 uses this feature to maintain clean waveforms across variable slot counts and termination mismatches.
Does the SN74GTLP1395DWE4 support both GTL and GTLP signaling standards?
Yes, the SN74GTLP1395DWE4 supports both GTL (VTT = 1.2 V, VREF = 0.8 V) and GTLP (VTT = 1.5 V, VREF = 1.0 V) signal levels, though its AC specifications are guaranteed only at GTLP. The device's input thresholds and output swing are compatible with either standard, giving designers flexibility to match existing backplane termination schemes. For GTL operation, users must ensure VTT and VREF are set accordingly and verify noise margins under actual load conditions. The SN74GTLP1395DWE4 maintains full functionality-including ERC control and live-insertion features-in both modes.
How does the split LVTTL port (A and Y) enhance system diagnostics with the SN74GTLP1395DWE4?
The split LVTTL port-comprising dedicated A (input) and Y (output) pins per channel-enables non-intrusive, real-time monitoring of data flow without disrupting the primary GTLP B-port path. When configured in transparent mode, the Y output mirrors A-input data; in inverted mode, it delivers ¬A. This allows external test logic or supervisory MCUs to observe signal integrity, verify polarity, or detect faults while the backplane remains fully operational. The SN74GTLP1395DWE4 leverages this architecture to support IEEE 1394 diagnostic protocols and field-serviceable backplane systems.
What live-insertion features are implemented in the SN74GTLP1395DWE4?
The SN74GTLP1395DWE4 integrates three complementary live-insertion features: Ioff circuitry disables outputs when VCC = 0 V (Ioff < 10 µA), preventing damaging current backflow; power-up 3-state holds outputs in high-Z during VCC ramp-up/down; and BIAS VCC precharges B-port pins before VCC is applied, eliminating glitches on active backplanes. These features collectively enable safe hot-plug operation in modular chassis. All are validated per JESD78 Class II latch-up and JESD22 ESD standards, and the SN74GTLP1395DWE4 meets these requirements across –40°C to 85°C.
Can the SN74GTLP1395DWE4 be used with 5-V logic controllers?
Yes, the LVTTL-side inputs (A ports, control pins, ERC) and outputs (Y ports) of the SN74GTLP1395DWE4 are explicitly 5-V tolerant, allowing direct connection to 5-V TTL or CMOS devices without external level-shifting components. Input voltage range extends to 7 V, and output drive remains ±24 mA at 3.3-V VCC. This compatibility simplifies integration with legacy microcontrollers, CPLDs, or FPGAs operating at 5 V while maintaining GTLP-level backplane signaling. The SN74GTLP1395DWE4 retains full specification compliance-including timing and live-insertion behavior-under these mixed-voltage conditions.
SN74GTLP1395DWE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74GTLP
- Package/Case:
- Packaging:
- Tube
- Product Status:
- Obsolete
- Translator Type:
- Mixed Signal
- Channel Type:
- Bidirectional
- Number of Circuits:
- 2
- Channels per Circuit:
- 1
- Voltage - VCCA:
- -
- Voltage - VCCB:
- -
- Input Signal:
- LVTTL
- Output Signal:
- GTLP
- Output Type:
- Tri-State, Inverted
- Data Rate:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC (0.295", 7.50mm Width)
SN74GTLP1395DWE4 FAQ
1.How can I place an order for SN74GTLP1395DWE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74GTLP1395DWE4 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 SN74GTLP1395DWE4 reliable?
The price and inventory of SN74GTLP1395DWE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74GTLP1395DWE4 is usually 5 days.
3.What payment methods are accepted for SN74GTLP1395DWE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74GTLP1395DWE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74GTLP1395DWE4?
SN74GTLP1395DWE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74GTLP1395DWE4 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 SN74GTLP1395DWE4?
For technical support, including SN74GTLP1395DWE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74GTLP1395DWE4 requirements.
6.How does Aetrix verify that SN74GTLP1395DWE4 is sourced from the original manufacturer or authorized distributors?
All SN74GTLP1395DWE4 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 SN74GTLP1395DWE4 meets industry standards.
7.What is the process for return or replacement of SN74GTLP1395DWE4?
All SN74GTLP1395DWE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74GTLP1395DWE4, 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 SN74GTLP1395DWE4 part is unused and in its original packaging.
Return procedure for SN74GTLP1395DWE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74GTLP1395DWE4 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…
