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Texas Instruments SN74AHCT367DR
- Part No.:
- SN74AHCT367DR
- Manufacturer:
- Texas Instruments
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN74AHCT367DR.pdf
- Description:
- IC BUF NON-INVERT 5.5V 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,328
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Product details
Overview
SN74AHCT367DR from Texas Instruments is a hex buffer and line driver with 3-state outputs, designed for memory address, clock, and bus-oriented driver applications. It features TTL-voltage-compatible inputs (VIH = 2 V, VIL = 0.8 V), noninverting logic, ±8 mA output drive at 5 V, and operation across –40°C to 125°C. Used in telecom infrastructure and network switches where controlled bus loading and voltage translation from 3.3 V to 5 V are required.
For engineers reviewing the SN74AHCT367DR datasheet, SN74AHCT367DR pinout, SN74AHCT367DR application, or SN74AHCT367DR equivalent, this page delivers verified functional modes, switching characteristics (tPLH/tPHL ≤ 8.5 ns @ 50 pF), thermal metrics (RθJA = 93.8°C/W for SOIC), ESD robustness (±2000 V HBM), and precise 16-pin SOIC package mapping - all critical for bus interface design and legacy TTL-to-CMOS interfacing.
Technical Context
The SN74AHCT367DR implements dual independent 3-state buffer groups: one 4-line (1A1–1A4 → 1Y1–1Y4) and one 2-line (2A1–2A2 → 2Y1–2Y2), each controlled by its own active-low enable (1OE, 2OE). Its CMOS architecture with TTL-compatible input thresholds enables reliable level shifting from 3.3-V logic domains to 5-V buses without external biasing.
It operates strictly within 4.5 V to 5.5 V supply range, exhibits low dynamic power dissipation (Cpd = 22 pF), and maintains stable propagation delay (tPD ≤ 9.5 ns) across full temperature range. Input transition rate limit (20 ns/V) and slow edge rates suppress output ringing on lightly loaded transmission lines - a key requirement in high-density backplane and motherboard routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5 V to 5.5 V - ensures compatibility with standard 5-V logic rails and tolerance to supply ripple. |
| VIH / VIL | 2.0 V / 0.8 V - accepts TTL-level inputs directly, eliminating need for level-shifter circuitry. |
| IOL / IOH | ±8 mA - sufficient drive strength for fan-out to 10 LS-TTL loads or termination into 50-Ω traces. |
| tPLH / tPHL | ≤ 8.5 ns @ CL = 50 pF - supports 100-MHz bus timing margins in synchronous systems. |
| ESD Rating | ±2000 V HBM - meets industrial handling requirements without additional protection circuitry. |
| Operating Temp | –40°C to 125°C - qualified for extended-temperature industrial and telecom base station environments. |
| RθJA (SOIC) | 93.8°C/W - enables thermal design margin of ≥25°C rise at 10-mW typical static dissipation. |
Pinout & Package
SN74AHCT367DR is supplied in a 16-pin SOIC (D) package measuring 9.9 mm × 6.0 mm (body: 9.9 mm × 3.90 mm), RoHS-compliant with NIPDAU lead finish and MSL Level-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | 1OE, 2OE | Active-low output enables - independently control 4-channel and 2-channel groups; tie to VCC via pull-up for power-up high-Z safety. |
| 2, 4, 6, 10 | 1A1–1A4 | Noninverting input pins for first buffer group - accept TTL/CMOS signals; must be terminated to VCC or GND if unused. |
| 3, 5, 7, 9 | 1Y1–1Y4 | Corresponding true outputs - present high-impedance state when 1OE is high; rated for ±25 mA continuous per pin. |
| 12, 14 | 2A1, 2A2 | Inputs for second buffer group - electrically isolated from first group; share same VCC/GND rails. |
| 11, 13 | 2Y1, 2Y2 | Dual outputs with independent 2OE control - support asymmetric bus partitioning (e.g., address vs. control lines). |
| 8, 16 | GND, VCC | Power supply pins - require local 0.1-µF ceramic bypass capacitor placed adjacent to pin 16 per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-voltage compatible inputs | Accepts 0.8 V low / 2.0 V high thresholds - interoperates directly with legacy 74LS and microcontroller GPIOs without level shifters. |
| Slow edge rate control | Δt/Δv = 20 ns/V - reduces EMI and overshoot on PCB traces, critical for noise-sensitive telecom and broadcast equipment. |
| High-impedance output state | IOZ ≤ ±2.5 µA @ VCC = 5.5 V - prevents bus contention during hot-swap or multi-master arbitration in shared-data-path systems. |
| Latch-up immunity | Exceeds 100 mA per JESD 78 Class II - ensures robustness against transient ground bounce or supply sequencing faults. |
| Overvoltage-tolerant inputs | Withstand VI up to 5.5 V regardless of VCC - allows safe interfacing with mixed-supply systems where input signals may exceed rail voltage. |
Applications
| Telecom Infrastructure | Network Switches |
|---|---|
Use Scenario: Driving address and control lines between FPGA-based packet processors and DDR SDRAM modules in carrier-grade routers. IC Role / Device Role / Timing Role: 3-state buffer isolating bidirectional memory buses during refresh cycles while maintaining signal integrity across 10+ inch PCB traces. Use Value: Enables clean bus turn-around with <9 ns propagation delay and eliminates need for series termination resistors due to controlled slew rate. | Use Scenario: Level-shifting and buffering management interface signals (I²C, GPIO) between 3.3-V SoC and 5-V peripheral ASICs in enterprise Ethernet switches. IC Role / Device Role / Timing Role: Voltage translator and fan-out buffer ensuring TTL-compatible signaling across mixed-voltage domains without timing skew. Use Value: Delivers guaranteed 2-V VIH threshold at 5-V VCC, supporting direct connection to legacy 5-V I/O expanders without external pull-ups. |
| Set Top Boxes | Electronic Points of Sale |
Use Scenario: Isolating HDMI CEC and IR receiver signals from main application processor in consumer STB designs subject to ESD events. IC Role / Device Role / Timing Role: ESD-protected buffer stage providing ±2000 V HBM immunity and high-Z isolation during system sleep states. Use Value: Meets IEC 61000-4-2 Level 3 (8 kV contact) requirements without external TVS diodes, reducing BOM count and board area. | Use Scenario: Driving LED status indicators and relay control lines from low-power microcontrollers in retail POS terminals operating in noisy 120/240 VAC environments. IC Role / Device Role / Timing Role: Robust output driver delivering ±8 mA per channel into discrete LEDs or optocouplers while rejecting conducted noise. Use Value: Maintains output VOH ≥ 3.8 V at 8 mA load, ensuring reliable LED turn-on even under worst-case VCC = 4.5 V and –40°C conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex buffer with 3-state output applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC367APWR | Lower VCC range (1.65–3.6 V); 3.3-V only; higher speed (tPD ≤ 5.2 ns); lower drive (±24 mA) | Designed for modern 3.3-V-only systems; not suitable for 5-V bus interfacing or TTL input compatibility | Select when migrating to 3.3-V domain and requiring faster switching; avoid for mixed-voltage or legacy TTL integration. |
| 74ACT367SCX | Same 5-V operation; higher drive (±24 mA); identical pinout; no HBM rating published; obsolete packaging (SOIC only) | Higher current capability suits heavier capacitive loads but lacks documented ESD robustness for new designs | Use only for drop-in replacement in legacy 74ACT-based designs; verify layout compatibility and ESD test compliance separately. |
Compared with SN74LVC367APWR and 74ACT367SCX, the SN74AHCT367DR uniquely balances TTL input compatibility, 5-V bus drive, industrial temperature range, and certified ±2000 V HBM protection - making it the preferred choice for retrofitting or upgrading legacy 5-V systems requiring reliability and interoperability.
Availability
SN74AHCT367DR is available at Aetrix Electronics and suitable for telecom infrastructure, network switches, and electronic point-of-sale systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74AHCT367DR 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 logic solutions, with over 90 years of innovation in industrial, automotive, and communications markets.
The SN74AHCT367DR belongs to TI's 74AHCT logic family, engineered for seamless TTL-to-CMOS interfacing in high-reliability 5-V systems - emphasizing voltage translation, bus isolation, and robust operation in thermally demanding environments.
FAQ
What is the maximum output current per pin for the SN74AHCT367DR?
The SN74AHCT367DR supports ±25 mA continuous DC output current per Y pin, as specified in Absolute Maximum Ratings. However, for reliable operation under recommended conditions, the device is characterized for ±8 mA high- and low-level output currents (IOH/IOL) - the value used in timing and voltage specifications. Exceeding ±8 mA may impact VOH/VOL margins or increase junction temperature beyond safe limits.
Does the SN74AHCT367DR support mixed-voltage operation between 3.3 V and 5 V?
Yes, the SN74AHCT367DR supports voltage translation from 3.3-V logic domains to 5-V buses. Its TTL-compatible inputs accept VIH = 2.0 V and VIL = 0.8 V at VCC = 5 V, allowing direct connection to 3.3-V microcontrollers or FPGAs. Outputs swing rail-to-rail (0 V to 5 V), enabling clean interfacing with 5-V peripherals without external level shifters.
How should unused inputs be handled on the SN74AHCT367DR?
All unused inputs on the SN74AHCT367DR must be tied to either VCC or GND to prevent floating states that cause increased ICC, noise susceptibility, or undefined logic behavior. TI recommends connecting unused A inputs directly to VCC or GND using short traces; OE pins should be pulled up to VCC via a resistor (value determined by driver sink capability) to ensure high-impedance outputs at power-up.
Is the SN74AHCT367DR pin-compatible with other 74-series hex buffers?
The SN74AHCT367DR shares the standard 16-pin SOIC footprint and pinout with industry-standard 74x367 devices including SN74LS367, SN74F367, and 74ACT367. Pin functions (1OE, 1A1–1A4, 1Y1–1Y4, 2OE, 2A1–2A2, 2Y1–2Y2, GND, VCC) match exactly. However, electrical characteristics - especially input thresholds, drive strength, and ESD ratings - differ significantly between families.
What thermal derating applies to the SN74AHCT367DR in SOIC package?
For the SN74AHCT367DR in SOIC (D) package, RθJA = 93.8°C/W. At ambient temperature of 85°C and maximum allowed junction temperature of 125°C, allowable power dissipation is limited to (125 – 85)/93.8 ≈ 426 mW. With typical ICC ≤ 40 µA and dynamic Cpd = 22 pF, actual power remains well below this limit - enabling full-speed operation without heatsinking in most industrial applications.
SN74AHCT367DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AHCT
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 2, 4 (Hex)
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SN74AHCT367DR FAQ
1.How can I place an order for SN74AHCT367DR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AHCT367DR 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 SN74AHCT367DR reliable?
The price and inventory of SN74AHCT367DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AHCT367DR is usually 5 days.
3.What payment methods are accepted for SN74AHCT367DR?
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4.How is shipping managed for SN74AHCT367DR?
SN74AHCT367DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AHCT367DR 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 SN74AHCT367DR?
For technical support, including SN74AHCT367DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AHCT367DR requirements.
6.How does Aetrix verify that SN74AHCT367DR is sourced from the original manufacturer or authorized distributors?
All SN74AHCT367DR 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 SN74AHCT367DR meets industry standards.
7.What is the process for return or replacement of SN74AHCT367DR?
All SN74AHCT367DR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AHCT367DR, 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 SN74AHCT367DR part is unused and in its original packaging.
Return procedure for SN74AHCT367DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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