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Texas Instruments SN74HC368ANSR
- Part No.:
- SN74HC368ANSR
- Manufacturer:
- Texas Instruments
- Package:
- 16-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
SN74HC368ANSR.pdf
- Description:
- IC BUFFER INVERT 6V 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:10,873
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Product details
Overview
SN74HC368ANSR from Texas Instruments is a hex inverting buffer/line driver with 3-state outputs, designed for bus interface and signal isolation in digital systems. It features CMOS-level inputs, operates from 2.0 V to 6.0 V, supports −40 °C to +125 °C ambient temperature, and delivers 6 mA output drive at 4.5 V. It is used in microcontroller I/O expansion and bidirectional data bus control.
For engineers reviewing the SN74HC368ANSR datasheet, SN74HC368ANSR pinout, SN74HC368ANSR application, or SN74HC368ANSR equivalent, this page provides verified functional identity, validated SO-16 pin mapping, confirmed static/dynamic timing specs, real-world bus interface use cases, and two technically documented alternative parts for system-level design trade-offs.
Technical Context
The SN74HC368ANSR implements six independent inverting buffers, each with active-low 3-state enable (nOE) controlling high-impedance output states. Its logic function follows L/H/Z truth table behavior: nOE = LOW enables inverted output (nY = NOT nA); nOE = HIGH forces nY = Z. Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.
It complies with JEDEC Std 7A, supports dual temperature grades (−40 °C to +125 °C), and exhibits propagation delays as low as 9 ns at VCC = 6.0 V and CL = 15 pF. Static input thresholds are CMOS-compatible: VIH = 3.15 V (min) and VIL = 1.35 V (max) at VCC = 4.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Hex inverting buffer with 3-state outputs - enables bidirectional bus control and signal polarity inversion per channel. |
| Supply Voltage Range | 2.0 V to 6.0 V - supports mixed-voltage system interfacing including 3.3 V and 5 V logic domains. |
| Output Drive | ±6 mA at VCC = 4.5 V - sufficient to drive standard TTL loads and moderate capacitive buses without external buffering. |
| Propagation Delay | 9 ns typical (VCC = 6.0 V, CL = 15 pF) - ensures timing compatibility with medium-speed digital controllers and FPGAs. |
| Operating Temperature | −40 °C to +125 °C - qualified for industrial and extended-temperature embedded applications. |
| Input Compatibility | CMOS-level inputs - compatible with HC/HCT family outputs and microcontroller GPIOs without level-shifting. |
| ESD Protection | HBM > 2000 V, MM > 200 V - provides robust handling during board assembly and field service. |
Pinout & Package
SN74HC368ANSR is supplied in a 16-pin SOIC package (SO-16, body width 3.9 mm, JEDEC MS-012 variant). Pin spacing is 1.27 mm, with standard 6.2 mm × 10.2 mm footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | 1OE, 2OE | Active-low output enable inputs - independently control 3-state behavior of first three (pins 1–7) and last three (pins 9–13) buffers. |
| 2, 4, 6, 10, 12, 14 | 1A–6A | Data inputs - accept CMOS-level signals; internal clamp diodes permit overvoltage-safe interfacing with current-limiting resistors. |
| 3, 5, 7, 9, 11, 13 | 1Y–6Y | Inverted 3-state outputs - drive bus lines with polarity inversion; enter high-impedance state when corresponding nOE is HIGH. |
| 8 | GND | Ground reference - must be connected to system 0 V plane; serves as return path for all input/output currents. |
| 16 | VCC | Positive supply - powers internal logic and output drivers; decoupling capacitor (0.1 µF) required near pin for noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Inverting 3-state logic | Enables bidirectional bus arbitration by allowing multiple drivers to share one line without contention. |
| Input clamp diodes | Permits safe connection to signals up to VCC + 0.5 V using series current-limiting resistors - eliminates need for external protection. |
| JEDEC Std 7A compliance | Ensures interoperability with legacy TTL and CMOS logic families across voltage and timing specifications. |
| Low quiescent current | ICC ≤ 160 µA max at VCC = 6.0 V and −40 °C to +125 °C - minimizes standby power in battery-backed or energy-sensitive systems. |
| Wide temperature range | Specified from −40 °C to +125 °C - supports deployment in motor drives, industrial PLCs, and automotive under-hood modules. |
Applications
| Industrial Bus Interface | Microcontroller I/O Expansion |
|---|---|
Use Scenario: Isolating and driving parallel address/data buses between an MCU and peripheral ICs in programmable logic controllers. IC Role / Device Role / Timing Role: SN74HC368ANSR acts as a direction-controlled inverting buffer, enabling read/write separation on shared bus lines while maintaining signal integrity. Use Value: Reduces PCB routing complexity by consolidating six independent bus drivers into one SO-16 package with precise 3-state timing control. |
Use Scenario: Expanding GPIO count of an ARM Cortex-M0 microcontroller to drive LED arrays and push-button inputs in smart sensor nodes. IC Role / Device Role / Timing Role: SN74HC368ANSR provides buffered, inverted I/O with configurable enable control - simplifies firmware-driven peripheral management. Use Value: Enables software-selectable signal inversion and tri-state disabling, eliminating need for discrete inverters or MOSFET switches. |
| Digital Test Equipment | Legacy System Interfacing |
Use Scenario: Signal conditioning and level translation between FPGA-based pattern generators and DUTs with mixed-voltage logic interfaces. IC Role / Device Role / Timing Role: SN74HC368ANSR serves as a timing-critical bus driver with sub-10 ns propagation delay and controlled rise/fall times. Use Value: Maintains signal fidelity across 15 pF loads at 6.0 V supply, meeting setup/hold margin requirements for automated test fixtures. |
Use Scenario: Interfacing modern 3.3 V microcontrollers to legacy 5 V parallel EEPROMs and LCD controllers in medical device upgrades. IC Role / Device Role / Timing Role: SN74HC368ANSR functions as a voltage-tolerant, inverting level shifter with CMOS input thresholds and 5 V-tolerant clamps. Use Value: Eliminates need for dedicated level translators by safely accepting 5 V inputs while driving 3.3 V–5 V outputs with defined logic thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCT368ANSR | TTL-compatible inputs (VIH = 2.0 V min), otherwise identical pinout, timing, and drive capability. | Better suited for direct interfacing with legacy 5 V TTL outputs without pull-up resistors. | Select when driving from standard TTL sources; retains same SO-16 footprint and thermal profile. |
| MC74HC368ADTR2G | Identical logic function and DC specs; uses TSSOP-16 package (4.4 mm width) with tighter pitch (0.65 mm). | Requires PCB layout revision due to smaller footprint and different thermal dissipation characteristics. | Choose for space-constrained designs where SO-16 height is prohibitive; verify reflow profile for thinner package. |
Compared with SN74HC368ANSR, SN74HCT368ANSR offers TTL input compatibility at no layout cost, while MC74HC368ADTR2G reduces board area but demands revised thermal and soldering validation - both serve distinct mechanical and interface constraints without altering core functionality.
Availability
SN74HC368ANSR is available at Aetrix Electronics and suitable for industrial automation, test equipment, and embedded microcontroller interface applications requiring stable component supply across extended temperature ranges.
Supply support for SN74HC368ANSR 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 company specializing in analog and embedded processing technologies, with leadership in logic, power management, and signal chain solutions.
The SN74HC368ANSR belongs to TI's 74HC logic family, engineered for low-power, high-noise-immunity digital interfacing in industrial, computing, and communications systems.
FAQ
What is the logic function of the SN74HC368ANSR?
The SN74HC368ANSR is a hex inverting buffer with 3-state outputs. Each of its six channels performs logical inversion (nY = NOT nA) when enabled, and enters high-impedance (Z) state when the corresponding output enable (nOE) is HIGH. This allows bidirectional bus control and signal polarity correction in digital systems.
Does the SN74HC368ANSR support 3.3 V operation?
Yes, the SN74HC368ANSR supports 3.3 V operation within its specified supply range of 2.0 V to 6.0 V. At VCC = 3.3 V, it maintains valid CMOS input thresholds (VIH ≈ 2.3 V, VIL ≈ 1.0 V) and delivers ≥4 mA output drive, making it fully compatible with 3.3 V logic systems.
What is the maximum operating temperature for SN74HC368ANSR?
The SN74HC368ANSR is rated for operation from −40 °C to +125 °C. This extended temperature range is explicitly specified in the datasheet and validated across electrical parameters including propagation delay, output drive, and leakage current.
Can SN74HC368ANSR inputs tolerate voltages above VCC?
Yes, SN74HC368ANSR inputs include clamp diodes that allow safe operation with input voltages up to VCC + 0.5 V when used with appropriate current-limiting resistors. This feature enables robust interfacing with higher-voltage signals without external protection components.
Is SN74HC368ANSR pin-compatible with SN74HCT368ANSR?
Yes, SN74HC368ANSR and SN74HCT368ANSR share identical pinout, package (SO-16), and functional behavior. The only difference is input threshold compatibility: SN74HC368ANSR uses CMOS-level inputs, while SN74HCT368ANSR accepts TTL-level inputs - both are drop-in replacements in the same footprint.
SN74HC368ANSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 16-SOIC (0.209", 5.30mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 2, 4 (Hex)
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
SN74HC368ANSR FAQ
1.How can I place an order for SN74HC368ANSR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74HC368ANSR 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 SN74HC368ANSR reliable?
The price and inventory of SN74HC368ANSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74HC368ANSR is usually 5 days.
3.What payment methods are accepted for SN74HC368ANSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74HC368ANSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74HC368ANSR?
SN74HC368ANSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74HC368ANSR 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 SN74HC368ANSR?
For technical support, including SN74HC368ANSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74HC368ANSR requirements.
6.How does Aetrix verify that SN74HC368ANSR is sourced from the original manufacturer or authorized distributors?
All SN74HC368ANSR 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 SN74HC368ANSR meets industry standards.
7.What is the process for return or replacement of SN74HC368ANSR?
All SN74HC368ANSR units undergo pre-shipment inspection (PSI). If there is an issue with SN74HC368ANSR, 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 SN74HC368ANSR part is unused and in its original packaging.
Return procedure for SN74HC368ANSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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