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Texas Instruments SN10KHT5574DW
- Part No.:
- SN10KHT5574DW
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
SN10KHT5574DW.pdf
- Description:
- IC TRANSLATOR UNIDIR 24SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,555
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Product details
Overview
SN10KHT5574DW from Texas Instruments is an octal ECL-to-TTL translator with edge-triggered D-type flip-flops, 24-pin SOIC (DW) package, 0°C to 75°C operating range, and 300 MHz maximum clock frequency. It enables high-speed CPU/bus interface functions including memory-address drivers, clock distribution, and bidirectional bus transceivers in mixed-signal systems.
For engineers reviewing the SN10KHT5574DW datasheet, SN10KHT5574DW pinout, SN10KHT5574DW application, or SN10KHT5574DW equivalent, key selection criteria include ECL/TTL level translation capability, output-enable-controlled high-impedance state, flow-through PCB layout architecture, and −5.2 V ECL supply compatibility.
Technical Context
The SN10KHT5574DW integrates eight independent D-type flip-flops with synchronous positive-edge clocking and TTL-compatible output-enable control. Its dual-supply operation uses VCC = 5 V (TTL) and VEE = −5.2 V (ECL), supporting −1130 mV to −810 mV ECL high-level inputs and −1950 mV to −1450 mV low-level inputs across temperature.
It delivers 48 mA low-level output drive and supports 200–300 MHz operation with tPLH/tPHL propagation delays of 2.3–7 ns. The device maintains internal flip-flop state during OE assertion, enabling data retention while outputs are tri-stated - critical for bus arbitration and hot-swap signaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Octal ECL-to-TTL translator with D-type flip-flops and 3-state outputs |
| Supply Voltages | VCC = 4.5–5.5 V (TTL), VEE = −4.94 to −5.46 V (ECL) |
| Max Clock Frequency | 300 MHz - supports high-speed CPU/bus timing in legacy ECL systems |
| Propagation Delay | tPLH = 2.3–7 ns - enables sub-ns timing margin for 200+ MHz synchronous designs |
| Output Drive | IOL = 48 mA - drives terminated 50 Ω TTL buses without external pull-ups |
| Operating Temperature | 0°C to 75°C - qualified for commercial/industrial computing environments |
| Package | 24-pin SOIC (DW) - surface-mount compatible with standard reflow profiles (MSL Level-1) |
Pinout & Package
SN10KHT5574DW is housed in a 24-pin Small Outline Integrated Circuit (SOIC) package with 300-mil body width and gull-wing leads. Pin spacing is 0.050 inch (1.27 mm), and thermal pad is not present. The center-pin configuration (VCC, GND, GND, GND, VEE) minimizes high-speed switching noise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | D1–D8 Data Inputs (ECL) | ECL-level data inputs referenced to VEE; accept −1950 mV to −810 mV logic levels |
| 9 | CLK (ECL) | Positive-edge triggered ECL clock input; synchronizes all eight flip-flops |
| 10 | OE (TTL) | TTL-level output-enable; active-low, controls all eight Q outputs simultaneously |
| 11–18 | Q1–Q8 Outputs (TTL) | TTL-compatible outputs with 48 mA sink capability and high-impedance state when OE = H |
| 19 | VCC | +5 V TTL supply rail - powers output buffers and internal TTL logic |
| 20, 21, 22 | GND | Three dedicated ground pins - reduce ground bounce and improve signal integrity |
| 23 | VEE | −5.2 V ECL supply rail - powers ECL input receivers and internal bias networks |
| 24 | NC | No-connect pin - electrically isolated; no internal connection or function |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pin architecture | Input-to-output signal path runs left-to-right across package - eliminates layer jumps and reduces trace length by up to 40% on dense PCBs |
| Independent data retention during OE assertion | Flip-flop states remain unchanged while outputs are tri-stated - enables seamless bus handoff without clock gating or pipeline stalls |
| Center-pin power/ground layout | VCC, three GND, and VEE occupy central pins (19–24) - lowers inductance and suppresses simultaneous switching noise by >6 dB |
| High-current TTL outputs | 48 mA sink per output - directly drives 50 Ω transmission lines or multiple 74LS loads without external buffers |
| 10KH ECL compatibility | Fully interoperable with TI's 10KH ECL family - matches voltage thresholds, timing margins, and termination requirements |
Applications
| Memory Address Driver | Clock Distribution Hub |
|---|---|
|
Use Scenario: Driving address bus lines from ECL-based CPU core to TTL-compatible memory arrays in mainframe or minicomputer systems. IC Role / Device Role / Timing Role: Translates ECL address signals to TTL levels while latching via clock edge; provides bus isolation during refresh cycles. Use Value: Eliminates discrete level-shifting resistors and pull-up networks, reducing BOM count by 12 components per channel and improving setup/hold timing margin by 1.8 ns. |
Use Scenario: Distributing synchronized clock signals from an ECL oscillator to multiple TTL logic blocks (e.g., ALU, register file, cache controller). IC Role / Device Role / Timing Role: Acts as a fan-out buffer with edge-aligned output enable - allows dynamic clock gating without skew accumulation. Use Value: Delivers <7 ns max skew across eight outputs at 250 MHz, enabling deterministic timing closure in pipelined architectures. |
| Bus-Oriented Receiver | Bus-Oriented Transmitter |
|
Use Scenario: Receiving ECL data from backplane or I/O module and presenting TTL-level signals to local processor bus. IC Role / Device Role / Timing Role: Synchronizes asynchronous ECL data into local clock domain; tri-states outputs during bus arbitration. Use Value: Supports hot-plug detection via OE-controlled high-Z state - prevents bus contention during module insertion/removal. |
Use Scenario: Transmitting TTL data from processor to ECL peripherals (e.g., high-speed ADCs, DACs, or RF front-ends). IC Role / Device Role / Timing Role: Converts and latches TTL data for ECL consumption; isolates processor bus during idle periods. Use Value: Enables bidirectional protocol bridging without external direction control logic - reduces interface latency by one clock cycle. |
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 |
|---|---|---|---|
| SN10KHT5574N | 24-pin PDIP package; identical electrical specs and timing; higher thermal resistance (θJA = 70°C/W vs. 55°C/W) | Suitable for prototyping or through-hole assembly; less suitable for high-density or thermally constrained boards | Select SN10KHT5574N only when manual soldering or socket-based validation is required. |
| MC100ELT24DG | 100EL ECL family; 5 V single supply (no VEE); 3.3 V TTL-compatible outputs; 2.5 ns typical tPD | Designed for newer 3.3 V systems; lacks true −5.2 V ECL input compatibility and 48 mA drive | Choose MC100ELT24DG only when migrating from 10KH to 100EL infrastructure and accepting reduced noise immunity. |
Compared with SN10KHT5574N and MC100ELT24DG, the SN10KHT5574DW uniquely combines legacy 10KH ECL input compatibility, 48 mA TTL drive, and SOIC packaging - making it the sole option for space-constrained, high-noise-margin upgrades of vintage ECL/TTL hybrid systems.
Availability
SN10KHT5574DW is available at Aetrix Electronics and suitable for memory-address driver, clock distribution hub, and bus-oriented receiver applications requiring stable component supply across extended product lifecycles.
Supply support for SN10KHT5574DW 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 U.S.-based semiconductor company founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN10KHT5574DW belongs to TI's legacy 10KH ECL logic family, engineered specifically to bridge high-speed ECL subsystems with TTL-based control and memory interfaces in mainframe and real-time computing systems.
FAQ
What is the primary function of the SN10KHT5574DW?
The SN10KHT5574DW is an octal ECL-to-TTL translator with edge-triggered D-type flip-flops and 3-state outputs. It converts −5.2 V ECL logic levels to 5 V TTL levels while providing synchronous latching and bus isolation. Its design enables direct interfacing between legacy ECL CPUs and TTL memory/peripheral subsystems without external level-shifting components.
Does the SN10KHT5574DW support both ECL and TTL supplies simultaneously?
Yes, the SN10KHT5574DW requires two independent supplies: VCC = 4.5–5.5 V for TTL output stages and internal logic, and VEE = −4.94 to −5.46 V for ECL input receivers and biasing. These supplies operate concurrently and are not interchangeable - VCC must be positive relative to GND, and VEE must be negative relative to GND.
How does the output-enable (OE) pin affect internal flip-flop operation in the SN10KHT5574DW?
The OE pin in the SN10KHT5574DW controls only the output drivers - it has no effect on internal D-type flip-flop state or clocking behavior. When OE is high, all Q outputs enter high-impedance mode while flip-flops continue sampling D inputs and updating on CLK edges. This allows data to be loaded or retained independently of bus activity.
What is the maximum clock frequency supported by the SN10KHT5574DW?
The SN10KHT5574DW supports a maximum clock frequency of 300 MHz under recommended operating conditions (VCC = 5 V, VEE = −5.2 V, TA = 25°C). At temperature extremes (0°C and 75°C), the guaranteed minimum fmax is 200 MHz. This rating assumes proper termination, controlled impedance routing, and ≤2.5 ns input rise/fall times.
Is the SN10KHT5574DW pin-compatible with other devices in the 10KH family?
The SN10KHT5574DW shares the same 24-pin SOIC (DW) footprint and pinout as SN10KHT5574N and SN10KHT5574J, but differs from non-translator variants like SN10KHT5573 (octal latch) or SN10KHT5575 (octal register with different enable logic). Pin compatibility is limited to members of the SN10KHT5574 variant group - always verify function mapping before substitution.
SN10KHT5574DW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- Packaging:
- Bulk
- Product Status:
- Active
- Translator Type:
- Mixed Signal
- Channel Type:
- Unidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 8
- Voltage - VCCA:
- -
- Voltage - VCCB:
- -
- Input Signal:
- ECL
- Output Signal:
- TTL
- Output Type:
- Tri-State, 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)
SN10KHT5574DW FAQ
1.How can I place an order for SN10KHT5574DW through Aetrix?
Please submit a Request for Quotation (RFQ) for SN10KHT5574DW 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 SN10KHT5574DW reliable?
The price and inventory of SN10KHT5574DW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN10KHT5574DW is usually 5 days.
3.What payment methods are accepted for SN10KHT5574DW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN10KHT5574DW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN10KHT5574DW?
SN10KHT5574DW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN10KHT5574DW 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 SN10KHT5574DW?
For technical support, including SN10KHT5574DW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN10KHT5574DW requirements.
6.How does Aetrix verify that SN10KHT5574DW is sourced from the original manufacturer or authorized distributors?
All SN10KHT5574DW 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 SN10KHT5574DW meets industry standards.
7.What is the process for return or replacement of SN10KHT5574DW?
All SN10KHT5574DW units undergo pre-shipment inspection (PSI). If there is an issue with SN10KHT5574DW, 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 SN10KHT5574DW part is unused and in its original packaging.
Return procedure for SN10KHT5574DW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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