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NXP Semiconductors 74HCT368DB,112
- Part No.:
- 74HCT368DB,112
- Manufacturer:
- NXP Semiconductors
- Package:
- 16-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74HCT368DB,112.pdf
- Description:
- IC INVERTER DL 4,2-INPUT 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,368
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Product details
Overview
74HCT368DB,112 from Nexperia is a hex inverting 3-state buffer/line driver with TTL-compatible inputs, operating from 4.5 V to 5.5 V, featuring 16-pin SO16 (SOT109-1) package, propagation delay of 13 ns (typ.) at VCC = 4.5 V, and -40 °C to +125 °C temperature range - used for bidirectional bus interfacing in industrial control backplanes.
For engineers reviewing the 74HCT368DB,112 datasheet, 74HCT368DB,112 pinout, 74HCT368DB,112 application, or 74HCT368DB,112 equivalent, key selection criteria include TTL-level input compatibility, 3-state enable timing (enable/disable ≤ 35 ns), output drive capability (±6 mA), thermal derating behavior above 110 °C, and SO16 mechanical footprint alignment with JEDEC MS-012.
Technical Context
The 74HCT368DB,112 implements six independent inverting buffers, each with active-low 3-state output control via dual OE inputs (1OE on Pin 1, 2OE on Pin 15). Its TTL-input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V) ensure direct compatibility with legacy 5 V logic families without level shifting.
Each output drives ±6 mA at VOH ≥ 3.98 V and VOL ≤ 0.26 V under specified load conditions, while static supply current remains ≤ 160 μA over full temperature range. Input clamping diodes allow safe interface to voltages exceeding VCC when used with current-limiting resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Hex inverting buffer with 3-state outputs - enables bidirectional data bus sharing via OE-controlled high-impedance isolation. |
| Supply Voltage Range | 4.5 V to 5.5 V - matches standard 5 V TTL systems and avoids undershoot/overshoot risks in mixed-voltage boards. |
| Propagation Delay | 13 ns (typ.) at VCC = 4.5 V, CL = 15 pF - supports >30 MHz bus toggle rates in synchronous control applications. |
| Output Drive | ±6 mA at VOH/VOL specs - sufficient to drive 50 Ω transmission lines or fan-out to 10 LS-TTL loads. |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood automotive modules and industrial PLC I/O stages without derating. |
| Input Thresholds | VIH = 2.0 V min, VIL = 0.8 V max - ensures robust noise margin (>0.4 V) against TTL signal degradation across long traces. |
| Power Dissipation | CPD = 30 pF per buffer - enables accurate dynamic power estimation (PD = CPD × VCC² × fi × N) for thermal budgeting. |
Pinout & Package
74HCT368DB,112 uses the SO16 plastic small outline package (SOT109-1), 16-pin, 3.9 mm body width, JEDEC MS-012 compliant, with 1.27 mm lead pitch and gull-wing terminations suitable for reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | 1OE, 2OE | Active-low output enable inputs - simultaneous assertion places all six outputs in high-impedance state, isolating connected bus segments. |
| 2, 4, 6, 10, 12, 14 | 1A–6A | Inverting data inputs - each drives corresponding Y output with polarity inversion; CMOS input structure draws <1 μA leakage. |
| 3, 5, 7, 9, 11, 13 | 1Y–6Y | Inverting 3-state outputs - sink/source up to ±6 mA; high-Z state leakage <±10 μA ensures minimal bus contention during disable. |
| 8 | GND | Ground reference - must be low-inductance connection to minimize ground bounce during simultaneous output switching. |
| 16 | VCC | Positive supply - requires local 100 nF ceramic decoupling within 5 mm to suppress switching noise coupling into analog sections. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | VIH/VIL thresholds match 5 V TTL families - eliminates need for external level translators in legacy system upgrades. |
| Low dynamic power | CPD = 30 pF per buffer - reduces switching power by >60% vs. equivalent 74LS devices at same frequency and load. |
| High noise immunity | Input hysteresis and 40% VCC noise margin - prevents false triggering in electrically noisy factory automation environments. |
| Bus hold circuitry | Not present - inputs float to undefined state when un-driven; external pull-up/down required for deterministic idle behavior. |
| ESD robustness | HBM >2000 V, CDM >1000 V - withstands handling in non-EPA assembly lines without special grounding protocols. |
Applications
| Industrial PLC Backplane Interface | Legacy System Bus Isolation |
|---|---|
|
Use Scenario: Bidirectional data exchange between CPU module and I/O expansion cards across a 16-bit parallel backplane with shared address/data lines. IC Role / Device Role / Timing Role: Inverting 3-state buffer providing direction-controlled signal conditioning and bus contention prevention during read/write cycles. Use Value: Enables clean signal integrity at 20 MHz toggle rate with <13 ns propagation delay and <35 ns enable/disable timing, reducing setup/hold violations. |
Use Scenario: Retrofitting modern microcontrollers into aging instrumentation systems using 5 V TTL buses with strict voltage threshold requirements. IC Role / Device Role / Timing Role: Level-shifting interface translating MCU GPIO outputs to TTL-compatible inputs while preserving signal inversion logic. Use Value: Eliminates discrete resistor networks by integrating TTL-input thresholds and 6 mA drive strength, cutting BOM count by 3 components per channel. |
| Automotive Body Control Module | Test Equipment Signal Routing |
|
Use Scenario: Driving multiplexed sensor readout lines in engine bay ECUs exposed to -40 °C to +125 °C ambient extremes. IC Role / Device Role / Timing Role: Inverting line driver buffering analog multiplexer select signals while maintaining noise-immune logic levels across long PCB traces. Use Value: Guaranteed operation across full automotive temperature range with no derating needed below 110 °C, simplifying thermal design. |
Use Scenario: Configurable signal path routing in automated test fixtures where DUT I/O lines must be dynamically isolated or inverted. IC Role / Device Role / Timing Role: Reconfigurable bus driver enabling software-selectable signal polarity and direction via OE control lines. Use Value: Reduces fixture wiring complexity by replacing 6 discrete inverters and 2 enable switches with single 16-pin IC and simplified firmware control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverting 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT367DB,112 | Non-inverting output logic - identical pinout, timing, and drive strength but preserves input polarity. | Suitable when bus protocol requires non-inverted data flow; not drop-in for existing inverting designs without firmware logic adjustment. | Select when signal polarity must match source without inversion; verify downstream logic compatibility before substitution. |
| SN74HCT240N | Octal configuration (8 channels), dual OE groups, DIP-20 package - higher channel count but incompatible pinout and package. | Used in new designs requiring more drivers per IC; unsuitable for space-constrained SO16 footprints or 6-channel layouts. | Choose only for greenfield designs needing >6 channels; requires PCB redesign due to different pin count, spacing, and thermal profile. |
Compared with 74HCT368DB,112, the 74HCT367DB,112 offers identical timing and drive but non-inverting logic - critical for polarity-sensitive protocols - while SN74HCT240N trades pin compatibility for higher density, demanding layout revision but reducing component count in high-channel-count systems.
Availability
74HCT368DB,112 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, and legacy system bus isolation requiring stable component supply, long-term lifecycle support, and guaranteed SO16 packaging consistency.
Supply support for 74HCT368DB,112 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
Nexperia is a global semiconductor expert delivering high-performance logic, discrete, and MOSFET solutions optimized for efficiency, reliability, and manufacturability in high-volume applications.
The 74HCT368DB,112 belongs to Nexperia's 74HCT logic family, engineered for seamless integration into 5 V TTL-based systems requiring low-power, high-noise-immunity bus interfacing with extended temperature operation.
FAQ
What is the maximum clock frequency supported by the 74HCT368DB,112?
The 74HCT368DB,112 does not operate as a clocked device but as a combinatorial buffer. Its 13 ns typical propagation delay at VCC = 4.5 V and CL = 15 pF supports reliable data toggling up to approximately 30 MHz in bus applications, assuming adequate setup/hold margins and controlled trace impedance.
Can 74HCT368DB,112 drive a 50 Ω transmission line directly?
Yes - with VOH ≥ 3.98 V and VOL ≤ 0.26 V at ±6 mA output current, the 74HCT368DB,112 can terminate a 50 Ω line at 5 V logic levels. However, series matching (e.g., 33 Ω resistor at driver output) is recommended to suppress reflections in lengths >10 cm.
Is the 74HCT368DB,112 pin-compatible with 74HC368 variants?
Yes - the 74HCT368DB,112 shares identical SO16 pinout and function mapping with 74HC368DB variants, but differs in input threshold levels (TTL vs. CMOS) and AC characteristics; substitution requires verification of VIH/VIL margins and timing closure in the target system.
Does the 74HCT368DB,112 include internal ESD protection diodes on I/O pins?
Yes - it features integrated HBM ESD protection exceeding 2000 V and CDM protection exceeding 1000 V per JEDEC JS-001/JS-002 standards, plus input clamp diodes that allow safe interface to voltages beyond VCC when used with appropriate current-limiting resistors.
74HCT368DB,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HCT
- Package/Case:
- 16-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- 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:
- 6mA, 6mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SSOP
74HCT368DB,112 FAQ
1.How can I place an order for 74HCT368DB,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT368DB,112 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 74HCT368DB,112 reliable?
The price and inventory of 74HCT368DB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT368DB,112 is usually 5 days.
3.What payment methods are accepted for 74HCT368DB,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT368DB,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT368DB,112?
74HCT368DB,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT368DB,112 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 74HCT368DB,112?
For technical support, including 74HCT368DB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT368DB,112 requirements.
6.How does Aetrix verify that 74HCT368DB,112 is sourced from the original manufacturer or authorized distributors?
All 74HCT368DB,112 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 74HCT368DB,112 meets industry standards.
7.What is the process for return or replacement of 74HCT368DB,112?
All 74HCT368DB,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT368DB,112, 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 74HCT368DB,112 part is unused and in its original packaging.
Return procedure for 74HCT368DB,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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