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Texas Instruments SN10KHT5578DWR
- Part No.:
- SN10KHT5578DWR
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
SN10KHT5578DWR.pdf
- Description:
- IC TRANSLATOR UNIDIR 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,395
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Product details
Overview
SN10KHT5578DWR from Texas Instruments is an octal TTL-to-ECL translator with edge-triggered D-type flip-flops and ECL-compatible output enable, operating from 0°C to 75°C, supporting 180 MHz clock frequency, noninverting outputs, and flow-through pinout for optimized PCB layout in high-speed bus interface applications.
For engineers reviewing the SN10KHT5578DWR datasheet, SN10KHT5578DWR pinout, SN10KHT5578DWR application, or SN10KHT5578DWR equivalent, key selection considerations include TTL clock/ECL control input compatibility, –5.2 V ECL supply operation, 2.2 ns typical tPLH propagation delay, and SOIC-24 package thermal impedance of 81°C/W.
Technical Context
This device implements eight independent D-type flip-flops triggered on the positive edge of a TTL-level clock while accepting ECL-level control inputs (OE), enabling synchronous data latching across mixed-signal domains. Its architecture separates TTL input logic from ECL output drivers, with OE asserted low to disable outputs without affecting internal state retention.
The SN10KHT5578DWR uses center-pin VCC, VEE, and GND configuration to minimize high-speed switching noise, supports 50 Ω ECL termination to –2 V, and meets MIL-STD-883 ESD protection (>2000 V) - all critical for CPU/bus-oriented functions like memory address drivers and clock distribution in legacy 10KH ECL systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VCC) | 4.5 V to 5.5 V TTL supply - ensures compatibility with standard 5 V TTL logic families and stable internal biasing. |
| Supply Voltage (VEE) | –4.94 V to –5.46 V ECL supply - matches 10KH ECL rail requirements and enables correct ECL logic level translation. |
| Max Clock Frequency | 180 MHz - supports high-speed synchronous bus timing in CPU and memory subsystems. |
| tPLH / tPHL (CLK→Q) | 0.8–4 ns - guarantees sub-4 ns worst-case propagation delay for precise edge-aligned data capture. |
| Input Clamp Current (IIK) | –18 mA - defines safe negative current handling at TTL inputs during overvoltage transients. |
| Output Drive Capability | ±50 mA per output - sufficient to drive 50 Ω terminated ECL loads without signal degradation. |
| Operating Temperature | 0°C to 75°C ambient - validated for commercial-grade industrial computing and telecom infrastructure use. |
Pinout & Package
SN10KHT5578DWR is packaged in a 24-pin SOIC (DW) with gull-wing leads, 300 mil body width, and RoHS-compliant CU NIPDAU finish. The package features center-aligned power/ground pins (VCC at Pin 17, VEE at Pin 24, GND at Pins 5–8) to reduce ground bounce and improve high-frequency noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1D–8D | TTL Data Inputs | Eight asynchronous TTL-level data inputs synchronized to CLK edge; tolerate –1.2 V to 7 V input range. |
| CLK | TTL Clock Input | Positive-edge-triggered TTL clock (Pin 16); requires ≥4 ns pulse width for reliable flip-flop operation. |
| OE | ECL Output Enable | Active-low ECL-level enable (Pin 1); disables all Q outputs without affecting internal DFF state. |
| 1Q–8Q | ECL Outputs | Noninverting ECL outputs (Pins 1–4, 13–16); terminated to –2 V via 50 Ω for standard ECL waveform integrity. |
| VCC | TTL Supply | +5 V TTL supply (Pin 17); powers internal TTL input buffers and logic circuitry. |
| VEE | ECL Supply | –5.2 V nominal ECL supply (Pin 24); powers ECL output drivers and level-shifting stages. |
| GND | Ground Reference | Four dedicated ground pins (Pins 5–8) provide low-inductance return paths for both TTL and ECL sections. |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through architecture | Input (D/CLK/OE) and output (Q) pins arranged on opposite sides of SOIC package to minimize trace crossovers and reduce parasitic coupling in dense layouts. |
| Independent output enable | OE asserts low to tri-state all eight ECL outputs without disrupting internal DFF latch state - enables dynamic bus sharing and hot-swap capability. |
| 10KH ECL compatibility | Fully compliant with TI's 10KH ECL family voltage thresholds (VOH = –810 mV min, VOL = –1630 mV max at 25°C) and timing specifications. |
| ESD robustness | Exceeds 2000 V HBM per MIL-STD-883 Method 3015 - protects against handling damage during assembly and field service. |
| Thermal performance | θJA = 81°C/W (SOIC-DW) - enables stable operation up to 75°C ambient without forced airflow in compact enclosures. |
Applications
| Memory Address Driver | Clock Distribution Hub |
|---|---|
|
Use Scenario: Driving 10KH ECL address buses from TTL-based microprocessor or ASIC address outputs in legacy mainframe or minicomputer systems. IC Role / Device Role / Timing Role: Synchronous octal level translator and latch - converts TTL address bits to ECL-compatible signals while holding stable values across clock cycles. Use Value: Eliminates external discrete level-shifting components and provides deterministic setup/hold timing (tsu = 1.5 ns, th = 1 ns) for reliable address sampling in high-speed memory controllers. |
Use Scenario: Distributing a single TTL system clock to multiple ECL clock receivers (e.g., ALUs, register files) in a 10KH ECL CPU pipeline. IC Role / Device Role / Timing Role: Clock domain translator with edge-triggered synchronization - ensures zero-skew, phase-aligned ECL clock edges across eight fanout paths. Use Value: Achieves 180 MHz operation with <4 ns worst-case tPLH/tPHL, enabling tight timing budgets in multi-stage pipelined execution units. |
| Bus Transceiver Interface | High-Speed Data Capture |
|
Use Scenario: Bidirectional bus arbitration between TTL peripheral controllers and ECL backplane data paths in telecom switching fabric modules. IC Role / Device Role / Timing Role: Directionally isolated octal translator - OE controls ECL output enable while TTL inputs remain active for status monitoring. Use Value: Enables concurrent read/write operations using shared bus lines, with no internal state corruption during OE assertion/deassertion. |
Use Scenario: Capturing parallel TTL data streams (e.g., ADC outputs, sensor arrays) into ECL-domain FIFOs or DSP input buffers. IC Role / Device Role / Timing Role: Synchronized data latch and level shifter - samples TTL data on CLK↑ and presents ECL-formatted Q outputs within 2.2 ns typical delay. Use Value: Supports >100 MSPS effective sampling rates with guaranteed hold time (th = 1 ns), reducing metastability risk in mixed-signal acquisition systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TTL-to-ECL translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN10KHT5578DW | Same die, identical electrical specs, but supplied in tape-and-reel (25 pcs) vs. SN10KHT5578DWR (2000 pcs). | No functional difference; suited for prototyping or low-volume builds where reel size matters. | Select SN10KHT5578DW for evaluation or small-batch assembly; SN10KHT5578DWR for production runs requiring automated pick-and-place feed. |
| SN10KHT5578NT | Same functionality in 24-pin PDIP package; higher θJA (67°C/W), no moisture sensitivity rating, leaded finish. | Better manual soldering and socket compatibility; unsuitable for reflow-only SMT lines or humidity-sensitive environments. | Choose SN10KHT5578NT for lab validation, repair, or through-hole legacy systems; avoid in high-density SOIC designs. |
Compared with SN10KHT5578DW and SN10KHT5578NT, the SN10KHT5578DWR offers optimized manufacturability for high-volume SMT production via its 2000-piece green RoHS-compliant tape-and-reel format, while retaining full electrical and timing equivalence to the base SN10KHT5578 device family.
Availability
SN10KHT5578DWR is available at Aetrix Electronics and suitable for memory address drivers, clock distribution hubs, bus transceiver interfaces, and high-speed data capture systems requiring stable component supply across extended product lifecycles.
Supply support for SN10KHT5578DWR 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 founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN10KHT5578DWR belongs to TI's legacy 10KH ECL logic family, designed specifically to bridge TTL and ECL domains in high-performance computing and telecom infrastructure where signal integrity and timing precision are critical.
FAQ
What is the maximum operating temperature for the SN10KHT5578DWR?
The SN10KHT5578DWR is characterized for operation from 0°C to 75°C ambient temperature. This range is validated under recommended supply conditions (VCC = 4.5–5.5 V, VEE = –4.94 to –5.46 V) and applies to the SOIC-DW package. Operation outside this range may result in undefined timing or logic behavior, and is not supported by TI's characterization data for SN10KHT5578DWR.
Does the SN10KHT5578DWR support true bidirectional translation between TTL and ECL?
No, the SN10KHT5578DWR is unidirectional: it accepts TTL-level inputs (D, CLK) and produces ECL-level outputs (Q). It does not translate ECL signals to TTL. The OE input is ECL-compatible but only controls output enable - it does not reverse signal flow. For bidirectional translation, separate devices or discrete solutions are required for each direction.
What is the purpose of the four GND pins (Pins 5–8) on the SN10KHT5578DWR?
The four dedicated GND pins on SN10KHT5578DWR provide low-inductance return paths for both TTL input circuitry and ECL output drivers. This separation minimizes ground bounce and crosstalk between logic domains, especially critical at 180 MHz operation. TI's layout guidance emphasizes using all four pins and connecting them to a solid ground plane beneath the SOIC footprint to maintain signal integrity.
Can the SN10KHT5578DWR be used with modern 3.3 V TTL systems?
No - the SN10KHT5578DWR requires a 4.5–5.5 V TTL supply (VCC) and is not rated for 3.3 V operation. Its TTL input thresholds (VIH = 2 V min, VIL = 0.8 V max) assume 5 V logic levels, and applying 3.3 V signals risks marginal recognition of logic highs. For 3.3 V systems, TI recommends newer families such as LVT or ALVT logic, not SN10KHT5578DWR.
Is the SN10KHT5578DWR pin-compatible with other members of the '5578 family?
Yes - SN10KHT5578DWR shares identical pinout and function with SN10KHT5578DW, SN10KHT5578NT, and SN10KHT5578NTE4. All variants use the same 24-pin mapping, including D/Q/OE/CLK placement and center-aligned VCC/VEE/GND. Differences are limited to package type, packaging format, and finish - not pin assignment or logic behavior.
SN10KHT5578DWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Translator Type:
- Mixed Signal
- Channel Type:
- Unidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 8
- Voltage - VCCA:
- -
- Voltage - VCCB:
- -
- Input Signal:
- TTL
- Output Signal:
- ECL
- Output Type:
- Non-Inverted
- Data Rate:
- -
- Operating Temperature:
- 0°C ~ 75°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SOIC (0.295", 7.50mm Width)
SN10KHT5578DWR FAQ
1.How can I place an order for SN10KHT5578DWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN10KHT5578DWR 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 SN10KHT5578DWR reliable?
The price and inventory of SN10KHT5578DWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN10KHT5578DWR is usually 5 days.
3.What payment methods are accepted for SN10KHT5578DWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN10KHT5578DWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN10KHT5578DWR?
SN10KHT5578DWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN10KHT5578DWR 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 SN10KHT5578DWR?
For technical support, including SN10KHT5578DWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN10KHT5578DWR requirements.
6.How does Aetrix verify that SN10KHT5578DWR is sourced from the original manufacturer or authorized distributors?
All SN10KHT5578DWR 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 SN10KHT5578DWR meets industry standards.
7.What is the process for return or replacement of SN10KHT5578DWR?
All SN10KHT5578DWR units undergo pre-shipment inspection (PSI). If there is an issue with SN10KHT5578DWR, 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 SN10KHT5578DWR part is unused and in its original packaging.
Return procedure for SN10KHT5578DWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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