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Texas Instruments SN10KHT5574NT
- Part No.:
- SN10KHT5574NT
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
SN10KHT5574NT.pdf
- Description:
- IC TRANSLTR UNIDIRECTIONAL 24DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,950
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Product details
Overview
SN10KHT5574NT from Texas Instruments is an octal ECL-to-TTL translator with edge-triggered D-type flip-flops, 24-pin SOIC-NT package, 0°C to 75°C operating range, 200–300 MHz maximum clock frequency, and TTL-compatible output-enable control. It enables high-speed bus interfacing in mixed-signal CPU and memory-address driver systems.
For engineers reviewing the SN10KHT5574NT datasheet, SN10KHT5574NT pinout, SN10KHT5574NT application, or SN10KHT5574NT equivalent, key selection criteria include ECL/TTL level translation capability, flow-through PCB layout support, high-impedance tri-state outputs, and −5.2 V ECL supply compatibility.
Technical Context
The SN10KHT5574NT implements eight independent D-type flip-flops triggered on the positive edge of an ECL clock input, with separate TTL-level OE control enabling synchronous bus isolation. Its dual-supply architecture uses VCC = 4.5–5.5 V (TTL) and VEE = −4.94 to −5.46 V (ECL), supporting direct interface between 10KH ECL logic domains and 5-V TTL buses.
Internal logic retains data during OE assertion, allowing asynchronous data loading while outputs remain high-impedance. The device features center-pin VCC/VEE/GND configuration to minimize switching noise, and its flow-through pinout reduces trace crossovers in dense backplane or motherboard layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Octal ECL-to-TTL translator with D-type flip-flops and tri-state outputs |
| Max clock frequency | 300 MHz - supports high-speed CPU/bus timing in legacy ECL-based systems |
| Supply voltages | VCC = 4.5–5.5 V (TTL), VEE = −4.94 to −5.46 V (ECL) - enables direct dual-rail interfacing |
| Output drive | IOL = 48 mA, IOH = −15 mA - drives standard TTL loads without external pull-ups |
| Operating temperature | 0°C to 75°C - qualified for commercial and industrial computing environments |
| Propagation delay | tPLH/tPHL ≤ 7 ns - ensures sub-10 ns timing margin for 100+ MHz bus cycles |
| Input compatibility | ECL inputs: −1950 mV to −735 mV; TTL inputs: 0.8 V/2.0 V thresholds - matches 10KH family logic levels |
Pinout & Package
SN10KHT5574NT is housed in a 24-pin small-outline integrated circuit (SOIC-NT) package with gull-wing leads, 0.025-inch pitch, and center-aligned power/ground pins (pins 12, 13, 14 = GND; pin 11 = VCC; pin 15 = VEE) to suppress simultaneous switching noise.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | D inputs (1D–8D) | TTL-level data inputs synchronized to CLK↑; accept 0.8 V/2.0 V thresholds |
| 9 | CLK (ECL) | Edge-triggering clock input referenced to VEE; accepts −1950 mV to −735 mV logic swing |
| 10 | OE (TTL) | Active-low output enable; places Q outputs in high-Z without affecting internal flip-flop state |
| 11 | VCC | +5 V TTL supply rail; center-positioned to reduce power distribution inductance |
| 12, 13, 14 | GND | Three dedicated ground pins adjacent to VCC/VEE for low-inductance return paths |
| 15 | VEE | −5.2 V ECL supply rail; center-positioned to minimize ECL switching noise coupling |
| 16–23 | Q outputs (1Q–8Q) | TTL-compatible outputs with 48 mA sink / 15 mA source capability; tri-statable via OE |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pinout | Input pins on left (1–8, 9, 10), power/ground center (11–15), outputs right (16–23) - eliminates layer jumps in PCB routing |
| Tri-state OE control | OE operates independently of clock and data; preserves internal state while isolating bus lines |
| Center-pin VCC/VEE/GND | Reduces simultaneous switching noise by localizing high-current return paths near supply pins |
| 10KH ECL compatibility | Meets TI's SDZS010 specification for voltage thresholds, timing, and noise immunity in 10KH systems |
| High-density bus interface | Replaces discrete level-shifting + latch combinations in memory-address drivers and clock distribution networks |
Applications
| Memory Address Drivers | CPU Bus Transceivers |
|---|---|
|
Use Scenario: Driving address lines from ECL-based CPU core to TTL-compatible memory arrays in mainframe or minicomputer systems. IC Role / Device Role / Timing Role: Level-translating octal latch synchronizing ECL clock domain to TTL memory interface timing. Use Value: Eliminates need for discrete ECL-to-TTL translators and external latches, reducing component count and propagation skew. |
Use Scenario: Bidirectional data buffering between ECL ALU units and TTL I/O peripherals in legacy computing architectures. IC Role / Device Role / Timing Role: Tri-stateable octal translator enabling controlled bus arbitration without signal contention. Use Value: OE-controlled high-impedance outputs prevent bus conflicts during read/write direction changes at >100 MHz rates. |
| High-Speed Clock Distribution | Backplane Signal Interface |
|
Use Scenario: Distributing synchronized clock signals from ECL clock generator to multiple TTL clock receivers across a multi-layer board. IC Role / Device Role / Timing Role: Edge-triggered D-flip-flop replicating and retiming ECL clocks into clean TTL waveforms. Use Value: Sub-7 ns tPLH/tPHL ensures minimal clock skew across eight parallel outputs for tightly timed subsystems. |
Use Scenario: Interfacing ECL bus controllers to TTL backplane slots in modular instrumentation or telecom chassis. IC Role / Device Role / Timing Role: Flow-through architecture minimizes trace length mismatch across 24-pin interface. Use Value: Center-grounded VCC/VEE/GND pins suppress crosstalk in high-density backplane connectors with shared return paths. |
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 |
|---|---|---|---|
| SN10KHT5574DW | Same die, SOIC-DW package (different lead finish and MSL rating); identical electrical specs and pinout | RoHS-compliant NIPDAU finish; rated for 0°C to 70°C (vs. NT's 0°C to 75°C) | Select SN10KHT5574DW for RoHS-constrained production; verify thermal margin in 70–75°C ambient zones. |
| MC100ELT24DG | ECL-to-CMOS/TTL translator with differential ECL inputs; no internal D-flip-flops; 3.3 V/5 V tolerant outputs | Requires external clock conditioning; lacks synchronous latch function; suited for point-to-point links vs. bus driving | Choose MC100ELT24DG only when differential ECL input rejection or 3.3 V compatibility is required over latch functionality. |
Compared with SN10KHT5574DW and MC100ELT24DG, the SN10KHT5574NT uniquely combines ECL clock synchronization, TTL-compatible latching, and 75°C operation in a single 24-pin SOIC-making it irreplaceable for legacy high-temperature bus interface designs requiring guaranteed timing margins.
Availability
SN10KHT5574NT is available at Aetrix Electronics and suitable for memory-address drivers, CPU bus transceivers, high-speed clock distribution networks, and backplane signal interfaces requiring stable component supply across extended product lifecycles.
Supply support for SN10KHT5574NT 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 computing markets.
The SN10KHT5574NT belongs to TI's 10KH-compatible ECL translator family, engineered specifically to bridge legacy ECL CPU/bus systems with TTL memory and I/O subsystems while maintaining signal integrity at multi-hundred-MHz rates.
FAQ
What is the operating temperature range of the SN10KHT5574NT?
The SN10KHT5574NT is characterized for operation from 0°C to 75°C, making it suitable for industrial computing environments where ambient temperatures exceed standard commercial-grade limits. This 75°C upper bound exceeds the 70°C rating of the pin-compatible SN10KHT5574DW variant and aligns with legacy mainframe and telecom chassis thermal profiles.
Does the SN10KHT5574NT support true tri-state operation?
Yes, the SN10KHT5574NT provides true high-impedance tri-state outputs via its TTL-level OE input. When OE is high, all eight Q outputs enter a high-Z state with leakage current ≤ ±50 µA, eliminating bus loading without affecting internal D-flip-flop states. This allows concurrent data loading and bus isolation-critical for dynamic bus arbitration in CPU/memory systems.
What are the valid voltage ranges for VCC and VEE on the SN10KHT5574NT?
The SN10KHT5574NT requires VCC = 4.5 V to 5.5 V for TTL logic operation and VEE = −4.94 V to −5.46 V for ECL interface compliance. These ranges ensure correct threshold referencing for both input families: TTL inputs meet 0.8 V/2.0 V VIH/VIL, while ECL inputs accept −1950 mV to −735 mV swings per SDZS010 specification.
How does the flow-through pinout of the SN10KHT5574NT improve PCB layout?
The SN10KHT5574NT's flow-through architecture positions D inputs (pins 1–8), CLK/OE (9–10), power/ground (11–15), and Q outputs (16–23) in linear sequence. This allows straight trace routing from left to right-eliminating vias, layer changes, and stubs in high-speed bus layouts-and directly reduces signal skew and crosstalk in dense motherboard or backplane designs.
Can the SN10KHT5574NT be used with modern 3.3 V systems?
No, the SN10KHT5574NT is not compatible with 3.3 V systems. It requires 5 V TTL-level inputs/outputs and −5.2 V ECL supply rails. Its VIH/VIL thresholds (2.0 V/0.8 V) and VOL/VOH specifications (0.55 V/3.3 V) are defined strictly for 5 V operation. Interfacing to 3.3 V logic would require external level-shifting circuitry and invalidate timing guarantees.
SN10KHT5574NT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- Through Hole
- Supplier Device Package:
- 24-DIP (0.300", 7.62mm)
SN10KHT5574NT FAQ
1.How can I place an order for SN10KHT5574NT through Aetrix?
Please submit a Request for Quotation (RFQ) for SN10KHT5574NT 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 SN10KHT5574NT reliable?
The price and inventory of SN10KHT5574NT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN10KHT5574NT is usually 5 days.
3.What payment methods are accepted for SN10KHT5574NT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN10KHT5574NT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN10KHT5574NT?
SN10KHT5574NT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN10KHT5574NT 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 SN10KHT5574NT?
For technical support, including SN10KHT5574NT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN10KHT5574NT requirements.
6.How does Aetrix verify that SN10KHT5574NT is sourced from the original manufacturer or authorized distributors?
All SN10KHT5574NT 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 SN10KHT5574NT meets industry standards.
7.What is the process for return or replacement of SN10KHT5574NT?
All SN10KHT5574NT units undergo pre-shipment inspection (PSI). If there is an issue with SN10KHT5574NT, 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 SN10KHT5574NT part is unused and in its original packaging.
Return procedure for SN10KHT5574NT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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