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Nexperia USA Inc. 74HC368DB,118
- Part No.:
- 74HC368DB,118
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 16-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74HC368DB,118.pdf
- Description:
- IC BUFFER INVERT 6V 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,066
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Product details
Overview
74HC368DB,118 from Nexperia is a hex inverting 3-state buffer/line driver in SO16 (SOT109-1) package, operating from 2.0 V to 6.0 V, with CMOS-level inputs, ±35 mA output drive, and propagation delay as low as 9 ns at VCC = 6.0 V. It serves as a bidirectional bus interface or address/data line driver in microcontroller peripheral expansion, industrial I/O modules, and legacy parallel bus systems.
For engineers reviewing the 74HC368DB,118 datasheet, 74HC368DB,118 pinout, 74HC368DB,118 application, or 74HC368DB,118 equivalent, key selection criteria include 3-state enable timing (ten ≤ 38 ns), input voltage compatibility (VIH ≥ 4.2 V at VCC = 6.0 V), thermal derating (12.4 mW/K above 110 °C), and JEDEC JESD7A compliance for 2.0–6.0 V operation.
Technical Context
This device implements six independent inverting buffers, each with active-low 3-state control via dedicated OE pins (1OE on Pin 1, 2OE on Pin 15). Its logic function follows strict truth table behavior: when nOE = L, nY = NOT(nA); when nOE = H, nY = Z (high-impedance).
Designed for mixed-voltage system interfacing, it features input clamp diodes enabling safe use of current-limiting resistors for over-VCC input protection, and meets latch-up immunity >100 mA per JESD78 Class II Level B. Operating temperature range is -40 °C to +125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.0 V to 6.0 V - supports direct interface with 3.3 V and 5 V logic domains without level shifters. |
| Propagation Delay | 9 ns (typ) at VCC = 6.0 V - enables reliable operation in 50 MHz+ parallel bus timing budgets. |
| Output Drive | ±35 mA - sufficient to drive 50 pF loads with <15 ns transition time, meeting TTL fanout requirements. |
| Input Thresholds | VIH = 4.2 V (min) at VCC = 6.0 V - ensures robust noise margin (>1.2 V) in noisy industrial environments. |
| Enable/Disable Time | ten = 38 ns (max), tdis = 38 ns (max) at VCC = 6.0 V - guarantees glitch-free bus arbitration in shared-data applications. |
| Power Dissipation | 500 mW (max) at Tj ≤ 110 °C - derates linearly at 12.4 mW/K above 110 °C in SO16 package. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - exceeds IEC 61000-4-2 Level 2 for board-level handling robustness. |
Pinout & Package
74HC368DB,118 is housed in plastic small outline package (SO16), SOT109-1, with 16 leads and 3.9 mm body width. Pin 1 is index-marked; pin 1 index corner is located at bottom-left when viewed top-down with marking side up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | 1OE, 2OE | Active-low output enable inputs - control groups of three outputs each; both must be LOW for full bus drive. |
| 2, 4, 6, 10, 12, 14 | 1A–6A | Inverting data inputs - each drives corresponding inverted output; CMOS-compatible thresholds. |
| 3, 5, 7, 9, 11, 13 | 1Y–6Y | Inverting 3-state outputs - present NOT(nA) when nOE = L; high-Z when nOE = H. |
| 8 | GND | Ground reference - decoupling capacitor (100 nF) required within 5 mm of Pin 8 and Pin 16. |
| 16 | VCC | Positive supply - must be stable within ±5 %; recommended bulk + local ceramic decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range | 2.0 V to 6.0 V - eliminates need for separate voltage rails in mixed-signal systems with 3.3 V MCU and 5 V peripherals. |
| Input clamp diodes | Integrated - allows external current-limiting resistors to safely interface to signals up to 6.5 V without damage. |
| High noise immunity | Typical 40 % VCC noise margin - prevents false triggering in electrically noisy factory automation environments. |
| JEDEC-compliant | JESD7A (2.0–6.0 V) and JESD8C (2.7–3.6 V) - ensures interoperability with industry-standard logic families. |
| Latch-up immunity | >100 mA per JESD78 Class II Level B - withstands transient overcurrent events common in hot-plug I/O designs. |
Applications
| Industrial PLC Backplane Interface | Microcontroller Parallel Port Expander |
|---|---|
|
Use Scenario: Isolating and driving address/data lines between CPU module and modular I/O cards in DIN-rail mounted PLCs. IC Role / Device Role / Timing Role: Inverting 3-state buffer providing direction-controlled bus isolation and signal inversion for legacy 8-bit parallel protocols. Use Value: Enables clean bus turnaround with <38 ns enable/disable timing, preventing data contention during read/write transitions. |
Use Scenario: Extending GPIO count of ARM Cortex-M0+ MCU to drive 16-segment LED displays and keypad scanners. IC Role / Device Role / Timing Role: Hex inverting driver translating MCU logic levels to higher-current outputs while supporting tri-state for multiplexed display refresh. Use Value: Delivers ±35 mA per output to directly drive LEDs without external transistors, reducing BOM count by 6 discrete components. |
| Legacy Printer Parallel Port Driver | Test Equipment Signal Conditioning Module |
|
Use Scenario: Buffering and level-shifting Centronics-style parallel port signals between PC host and dot-matrix printer controller. IC Role / Device Role / Timing Role: Bidirectional bus driver with independent OE control for handshake signal management (STROBE, ACK, BUSY). Use Value: Input clamp diodes allow safe connection to 5 V printer-side signals even when MCU operates at 3.3 V, eliminating external clamping diodes. |
Use Scenario: Conditioning digital stimulus signals in automated test equipment before routing to DUT under test. IC Role / Device Role / Timing Role: Inverting buffer with precise 9 ns propagation delay used to align clock edges across multiple test channels. Use Value: Tight propagation delay matching (<5 ns variation across six channels) ensures sub-20 ns skew in synchronized multi-channel test vectors. |
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 |
|---|---|---|---|
| 74HCT368DB,118 | TTL-compatible inputs (VIH = 2.0 V min at VCC = 4.5–5.5 V); identical pinout and timing. | Better suited for interfacing with legacy 5 V TTL logic; slightly higher ICC at VCC = 5 V. | Select when driving from standard 5 V TTL sources; not suitable for 2.0–3.6 V only systems. |
| SN74LVC368APWR | Lower VCC range (1.65–3.6 V); 3.3 V optimized; 24 mA output drive; different pinout (TSSOP16). | Targeted for modern low-voltage embedded systems; lacks input clamp diodes for over-VCC tolerance. | Choose for 3.3 V-only designs requiring lower power; requires PCB redesign due to non-pin-compatible layout. |
Compared with 74HC368DB,118, the 74HCT368DB,118 offers superior TTL input compatibility but reduced low-voltage flexibility, while the SN74LVC368APWR delivers lower static power and tighter 3.3 V timing at the cost of voltage range and overvoltage resilience.
Availability
74HC368DB,118 is available at Aetrix Electronics and suitable for industrial PLC backplanes, microcontroller peripheral expansion, and legacy parallel port interfaces requiring stable component supply across extended temperature ranges (-40 °C to +125 °C).
Supply support for 74HC368DB,118 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 specializing in high-performance logic, analog, and MOSFET solutions, with leadership in automotive-grade and industrial reliability standards.
The 74HC368 belongs to Nexperia's HC logic family, designed for robust, low-power, wide-supply-voltage digital interfacing in industrial control, instrumentation, and legacy system upgrades.
FAQ
What is the maximum operating frequency supported by 74HC368DB,118?
The device does not specify a maximum clock frequency, but its propagation delay (9 ns typ at VCC = 6.0 V) and transition time (4 ns typ) support reliable operation in parallel bus systems with cycle times ≥ 30 ns - equivalent to ~33 MHz sustained data rate. System-level timing must account for load capacitance and PCB trace delays.
Can 74HC368DB,118 drive a 50 pF capacitive load at 6.0 V supply?
Yes. At VCC = 6.0 V and CL = 50 pF, the typical transition time is 10 ns and propagation delay remains ≤25 ns, well within datasheet limits. Output current capability (±35 mA) ensures adequate slew rate for this load, provided PCB layout minimizes inductance and uses proper grounding.
Is 74HC368DB,118 pin-compatible with 74HC367?
No. The 74HC367 is a hex non-inverting 3-state buffer with identical pinout except for logic polarity: 74HC367 outputs follow inputs (Y = A), whereas 74HC368 outputs invert (Y = NOT A). Swapping them causes functional failure unless logic inversion is compensated elsewhere in the design.
Does 74HC368DB,118 require external pull-up or pull-down resistors on OE pins?
No. OE pins (1OE, 2OE) are active-low CMOS inputs with negligible leakage (<±0.1 μA). They may be driven directly from MCU GPIO or logic gates. Pull-up resistors are unnecessary unless open-drain control is used; floating OE pins must be avoided to prevent undefined output states.
74HC368DB,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 16-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SSOP
74HC368DB,118 FAQ
1.How can I place an order for 74HC368DB,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC368DB,118 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 74HC368DB,118 reliable?
The price and inventory of 74HC368DB,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC368DB,118 is usually 5 days.
3.What payment methods are accepted for 74HC368DB,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC368DB,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC368DB,118?
74HC368DB,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC368DB,118 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 74HC368DB,118?
For technical support, including 74HC368DB,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC368DB,118 requirements.
6.How does Aetrix verify that 74HC368DB,118 is sourced from the original manufacturer or authorized distributors?
All 74HC368DB,118 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 74HC368DB,118 meets industry standards.
7.What is the process for return or replacement of 74HC368DB,118?
All 74HC368DB,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC368DB,118, 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 74HC368DB,118 part is unused and in its original packaging.
Return procedure for 74HC368DB,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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