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Texas Instruments SN100KT5574DW
- Part No.:
- SN100KT5574DW
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
SN100KT5574DW.pdf
- Description:
- ECL TO TTL TRANSLATOR, 8 FUNC
- Quantity:
- Payment:
- Shipping:
Inventory:4,381
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Product details
Overview
SN100KT5574DW from Texas Instruments is an octal ECL-to-TTL translator with edge-triggered D-type flip-flops, 100K ECL compatibility, TTL control inputs, and high-impedance output-enable (OE) functionality. It operates from 0°C to 85°C with VCC = 4.5–5.5 V and VEE = −4.2 to −4.8 V, enabling bus-oriented CPU functions like memory-address drivers and clock distribution in mixed-signal systems.
For engineers reviewing the SN100KT5574DW datasheet, SN100KT5574DW pinout, SN100KT5574DW application, or SN100KT5574DW equivalent, key selection considerations include ECL/TTL level translation capability, flow-through PCB layout optimization, center-pin power/ground configuration for noise suppression, and 200–300 MHz maximum operating frequency under load.
Technical Context
The SN100KT5574DW implements eight independent edge-triggered D-type flip-flops synchronized to the positive transition of an ECL clock input. Its dual-supply architecture uses separate VCC (TTL logic), VEE (ECL logic), and GND rails, with dedicated ECL-level inputs (CLK, D1–D8) and TTL-level outputs (Q1–Q8).
Output-enable (OE) is a buffered TTL input that places all eight outputs in high-impedance state without affecting internal flip-flop operation-enabling data retention or new loading while outputs are disabled. The device features flow-through pinout and center-pin VCC/VEE/GND placement to minimize switching noise and simplify high-speed PCB routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - supports standard TTL supply tolerance and ensures robust logic-high output voltage (VOH ≥ 2.4 V at −3 mA) |
| VEE Range | −4.2 V to −4.8 V - matches 100K ECL logic thresholds (VIH = −1150 mV, VIL = −1810 mV) |
| fmax | 200–300 MHz - defines maximum reliable clock rate for synchronous bus interface applications |
| tPLH / tPHL | 2.3–7 ns / 2.9–7.4 ns - determines minimum pulse-width and setup/hold timing margins in high-speed address/data paths |
| IOL / IOH | 48 mA / −15 mA - enables direct drive of multiple TTL loads without external pull-ups or buffers |
| IOZH / IOZL | ±50 µA - specifies leakage current in high-impedance state, critical for bus contention avoidance |
| Operating Temp | 0°C to 85°C - qualifies for commercial-grade industrial control and computing environments |
Pinout & Package
DW package is a 24-pin SOIC (Small Outline Integrated Circuit) with gull-wing leads, 300-mil body width, and center-pin power/ground configuration (Pins 13–15: GND, GND, GND; Pin 16: VCC; Pin 23: VEE) to reduce ground bounce and improve signal integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1D–8D | ECL data inputs | Accept −1810 mV to −840 mV logic levels; require ECL-compatible source termination |
| CLK | ECL clock input | Edge-triggered on rising transition; referenced to VEE, not GND |
| OE | TTL output-enable input | Active-low TTL control (0.8 V max low, 2 V min high); does not affect internal flip-flop state |
| 1Q–8Q | TTL outputs | Drive standard TTL loads; support high-impedance state when OE = high |
| VCC | TTL supply | Powers output stage and TTL interface circuitry; decoupling required near Pin 16 |
| VEE | ECL supply | Negative rail for ECL input stage and internal biasing; requires clean −4.5 V ±0.3 V |
| GND | Signal reference | Three dedicated pins (13,14,15) provide low-inductance return path for both logic domains |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through architecture | Input pins (D1–D4, CLK, OE) on left side and outputs (Q1–Q4) on right side enable straight PCB trace routing and minimize crosstalk |
| Center-pin VCC/VEE/GND | Reduces simultaneous switching noise by localizing power/ground returns and lowering loop inductance |
| High-impedance OE control | Allows dynamic bus sharing across multiple SN100KT5574DW devices without external tri-state logic or arbitration circuitry |
| 100K ECL compatibility | Meets TI's 100K ECL family voltage thresholds and timing specifications, ensuring interoperability with SN100K-series drivers and receivers |
| Independent data retention | Flip-flop state remains valid during OE assertion, enabling glitch-free bus handoff between controllers |
Applications
| Memory Address Driver | CPU Bus Transceiver |
|---|---|
Use Scenario: Driving 16-bit address bus from ECL-based microprocessor to TTL-compatible memory array. IC Role / Device Role / Timing Role: Level-translating octal D-flip-flop providing synchronized, noise-immune address latching with ECL clock edge alignment. Use Value: Eliminates need for discrete resistor networks or additional buffer stages while maintaining <7 ns propagation delay and 300 MHz timing margin. | Use Scenario: Bidirectional data bus interface between ECL ALU and TTL peripheral controller. IC Role / Device Role / Timing Role: Output-enabled octal translator enabling time-multiplexed read/write cycles without bus contention. Use Value: High-impedance outputs prevent signal collisions; OE-controlled disable allows seamless handoff between master and slave devices. |
| Clock Distribution Hub | High-Speed Bus Receiver |
Use Scenario: Distributing synchronized clock signals from ECL oscillator to multiple TTL clock domains (e.g., DMA, UART, timer modules). IC Role / Device Role / Timing Role: Edge-triggered clock fanout buffer with matched skew and low jitter (<0.5 ns variation across Q1–Q8). Use Value: Center-pin power/ground and flow-through layout minimize clock skew and ground bounce, improving system timing margin. | Use Scenario: Receiving parallel status/data words from ECL sensor interface into TTL-based data acquisition unit. IC Role / Device Role / Timing Role: Synchronized sampling latch converting burst-mode ECL data streams into stable TTL logic levels. Use Value: 48 mA sink capability drives heavy capacitive loads (e.g., long traces, multiple gate inputs) without signal degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ECL-to-TTL translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN100K5574DW | Same pinout and function but lacks OE control; outputs always active | Not suitable for shared-bus systems requiring tri-state capability | Select SN100KT5574DW when dynamic bus arbitration or multi-drop topology is required |
| MC100ELT24DG | 100EL ECL-to-TTL translator with differential ECL inputs and 3.3 V TTL outputs; no internal flip-flops | Used for asynchronous level shift only-not for clocked data latching | Choose SN100KT5574DW when edge-triggered storage and synchronous bus timing are mandatory |
Compared with SN100K5574DW and MC100ELT24DG, the SN100KT5574DW uniquely combines ECL clocked storage, TTL-compatible outputs, and programmable tri-state control in a single 24-pin SOIC-making it irreplaceable for synchronous, multi-master bus architectures requiring deterministic timing and noise resilience.
Availability
SN100KT5574DW is available at Aetrix Electronics and suitable for memory-address driver, CPU bus transceiver, and clock distribution hub applications requiring stable component supply, long-term industrial lifecycle support, and verified ECL/TTL interoperability.
Supply support for SN100KT5574DW 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 SN100KT5574DW belongs to TI's legacy 100K ECL logic family, engineered specifically for high-speed, mixed-technology system integration where ECL performance meets TTL system compatibility.
FAQ
What is the primary function of the SN100KT5574DW?
The SN100KT5574DW is an octal ECL-to-TTL translator with integrated edge-triggered D-type flip-flops. It converts 100K ECL-level signals (CLK, D1–D8) into TTL-compatible outputs (Q1–Q8), supports high-impedance tri-state control via OE, and is optimized for synchronous bus interfaces in mixed-signal computing systems. Its design enables direct replacement of discrete level-shifting and latching circuits.
Does the SN100KT5574DW support both ECL and TTL supplies simultaneously?
Yes, the SN100KT5574DW requires two independent supplies: VCC (4.5–5.5 V) for TTL output logic and VEE (−4.2 to −4.8 V) for ECL input logic. GND serves as the common reference. This dual-rail architecture allows true ECL/TTL domain bridging without level-shifter ICs or resistive networks, and the center-pin GND placement minimizes noise coupling between domains.
How does the output-enable (OE) pin affect internal operation of the SN100KT5574DW?
The OE pin on the SN100KT5574DW controls only the output drivers-it has no effect on internal flip-flop state or clocked data capture. When OE is high (TTL high), all Q outputs enter high-impedance mode regardless of stored data. Data remains latched and can be updated or retained during OE assertion, enabling glitch-free bus arbitration and hot-swappable module designs using the SN100KT5574DW.
What is the maximum operating frequency of the SN100KT5574DW?
The SN100KT5574DW is characterized for fmax = 200–300 MHz under recommended conditions (CL = 50 pF, R1/R2 = 500 Ω). This rating reflects guaranteed operation across temperature and voltage ranges, supporting high-speed CPU bus and memory interface applications. Timing parameters such as tPLH (2.3–7 ns) and tPHL (2.9–7.4 ns) are specified to ensure setup/hold compliance at these frequencies.
Is the SN100KT5574DW compatible with modern PCB assembly processes?
Yes, the SN100KT5574DW in DW (SOIC-24) package is compatible with standard surface-mount reflow profiles, including lead-free soldering. Its gull-wing leads, 300-mil body width, and JEDEC-standard footprint allow automated placement and inspection. TI's datasheet specifies thermal limits (storage: −65°C to 150°C; operating: 0°C to 85°C), confirming suitability for industrial reflow and long-term reliability in production environments using the SN100KT5574DW.
SN100KT5574DW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- Packaging:
- Bulk
- Product Status:
- Active
- Translator Type:
- -
- Channel Type:
- -
- Number of Circuits:
- -
- Channels per Circuit:
- -
- Voltage - VCCA:
- -
- Voltage - VCCB:
- -
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- -
- Data Rate:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
SN100KT5574DW FAQ
1.How can I place an order for SN100KT5574DW through Aetrix?
Please submit a Request for Quotation (RFQ) for SN100KT5574DW 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 SN100KT5574DW reliable?
The price and inventory of SN100KT5574DW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN100KT5574DW is usually 5 days.
3.What payment methods are accepted for SN100KT5574DW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN100KT5574DW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN100KT5574DW?
SN100KT5574DW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN100KT5574DW 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 SN100KT5574DW?
For technical support, including SN100KT5574DW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN100KT5574DW requirements.
6.How does Aetrix verify that SN100KT5574DW is sourced from the original manufacturer or authorized distributors?
All SN100KT5574DW 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 SN100KT5574DW meets industry standards.
7.What is the process for return or replacement of SN100KT5574DW?
All SN100KT5574DW units undergo pre-shipment inspection (PSI). If there is an issue with SN100KT5574DW, 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 SN100KT5574DW part is unused and in its original packaging.
Return procedure for SN100KT5574DW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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