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NXP Semiconductors 74HCT366N,652
- Part No.:
- 74HCT366N,652
- Manufacturer:
- NXP Semiconductors
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
74HCT366N,652.pdf
- Description:
- IC BUFFER INVERT 5.5V 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,326
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Product details
Overview
74HCT366N,652 from NXP Semiconductors is a hex inverting buffer/line driver with 3-state outputs, designed for bus interface and data routing in TTL-compatible digital systems. It features dual active-low output enable inputs (OE1, OE2), operates from 4.5 V to 5.5 V, supports −40 °C to +125 °C ambient range, and delivers 6 mA output drive at VCC = 4.5 V. It is commonly used in microcontroller peripheral expansion and legacy industrial control backplanes.
For engineers reviewing the 74HCT366N,652 datasheet, 74HCT366N,652 pinout, 74HCT366N,652 application, or 74HCT366N,652 equivalent, key selection criteria include TTL-level input compatibility, 3-state bus contention management, propagation delay ≤24 ns (VCC = 4.5 V), DIP16 through-hole package suitability for prototyping and repair, and compliance with JEDEC Std 7A.
Technical Context
The 74HCT366N,652 implements six independent inverting buffers, each with separate input (nA) and output (nY) pins, controlled by two shared active-low 3-state enables (OE1, OE2). Its TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensure direct interfacing with legacy 5 V logic families without level shifting.
Each buffer provides rail-to-rail CMOS output swing with guaranteed VOL ≤ 0.26 V and VOH ≥ 3.98 V at IO = ±6 mA, and exhibits low dynamic power dissipation via CPD = 30 pF per buffer. The device uses standard silicon-gate CMOS technology with integrated input clamp diodes for overvoltage tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Hex inverting buffer with 3-state outputs - enables bidirectional bus sharing and signal polarity inversion in one package. |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL and mixed-voltage systems; not rated below 4.5 V. |
| Input Compatibility | TTL-level inputs (VIH ≥ 2.0 V, VIL ≤ 0.8 V) - eliminates need for external level translators when driving from 5 V LS-TTL or MCU GPIOs. |
| Propagation Delay | ≤24 ns max (VCC = 4.5 V, TA = −40 to +85 °C) - supports reliable operation in 20 MHz synchronous bus environments. |
| Output Drive | ±6 mA at VCC = 4.5 V - sufficient to drive 10 LSTTL loads or 50 pF capacitive loads with controlled edge rates. |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive, industrial PLC, and high-reliability embedded applications. |
| ESD Protection | HBM > 2000 V, MM > 200 V - meets industrial handling requirements without additional protection circuitry. |
Pinout & Package
DIP16 plastic dual in-line package (SOT38-1), 300-mil body width, through-hole mountable, 16-pin layout with standard 0.1″ pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE1) | Output Enable 1 | Active-low control for buffers 1–3; pulls outputs 1Y–3Y into high-impedance state when HIGH. |
| 2 (1A) | Data Input 1 | Inverts and drives output 1Y; accepts TTL/CMOS logic levels with clamp diodes for overvoltage resilience. |
| 3 (1Y) | Data Output 1 | Inverted buffered output of 1A; 3-state capable; sinks or sources up to 6 mA at VCC = 4.5 V. |
| 4 (2A) | Data Input 2 | Inverts and drives output 2Y; electrically identical to 1A with same VIH/VIL thresholds. |
| 5 (2Y) | Data Output 2 | Inverted buffered output of 2A; shares OE1 control with 1Y and 3Y. |
| 6 (3A) | Data Input 3 | Inverts and drives output 3Y; grouped with 1A and 2A under OE1 control. |
| 8 (GND) | Ground Reference | 0 V return path for all internal logic and I/O; must be low-impedance for noise immunity. |
| 9 (4Y) | Data Output 4 | Inverted buffered output of 4A; controlled by OE2; isolated from OE1 group for independent bus partitioning. |
| 10 (4A) | Data Input 4 | Inverts and drives output 4Y; grouped with 5A and 6A under OE2 control. |
| 11 (5Y) | Data Output 5 | Inverted buffered output of 5A; shares OE2 with 4Y and 6Y; enables split-bus control schemes. |
| 12 (5A) | Data Input 5 | Inverts and drives output 5Y; part of second 3-buffer group managed by OE2. |
| 13 (6Y) | Data Output 6 | Inverted buffered output of 6A; final output in OE2 group; supports full 6-bit inverted bus drive. |
| 14 (6A) | Data Input 6 | Inverts and drives output 6Y; completes the hex inverter set; electrically matched to other inputs. |
| 15 (OE2) | Output Enable 2 | Active-low control for buffers 4–6; allows independent gating of upper/lower half of bus. |
| 16 (VCC) | Supply Voltage | +4.5 V to +5.5 V power rail; decoupling capacitor (100 nF) required near pin for stable switching. |
Key Features
| Feature | Design Value |
|---|---|
| Inverting 3-state buffers | Enables polarity correction and bus contention avoidance in shared-data-path architectures like ISA or custom parallel interfaces. |
| TTL-compatible inputs | Accepts standard 5 V TTL logic thresholds without external biasing-reduces BOM count in mixed-technology designs. |
| Dual independent output enables | Allows partitioning of 6-bit data into two 3-bit groups (e.g., address vs. control lines), simplifying timing and isolation. |
| JEDEC Std 7A compliance | Ensures interoperability with legacy 74-series logic families and guarantees standardized AC/DC electrical behavior. |
| Clamp diode protected inputs | Permits safe interfacing to signals exceeding VCC (e.g., 12 V sensor outputs) when used with current-limiting resistors. |
Applications
| Industrial PLC Backplane Interface | Microcontroller Peripheral Expansion |
|---|---|
|
Use Scenario: Isolating and buffering address/data lines between CPU module and modular I/O cards in DIN-rail mounted controllers. IC Role / Device Role: Hex inverting buffer providing level-shifting, noise immunity, and 3-state bus arbitration between slots. Use Value: Enables hot-swap-capable backplane design with deterministic timing (tpd ≤ 24 ns) and robust 125 °C operation. |
Use Scenario: Expanding GPIO count of an 8-bit MCU (e.g., ATmega328P) to drive multiple 7-segment displays or LED arrays. IC Role / Device Role: Inverting line driver translating MCU logic levels to higher-current outputs while preserving signal polarity. Use Value: Delivers 6 mA per output-sufficient to directly drive common-anode displays without external transistors. |
| Legacy Test Equipment Bus Control | Automotive ECU Diagnostic Interface |
|
Use Scenario: Managing bi-directional communication on GPIB-like parallel control buses in automated test systems. IC Role / Device Role: 3-state inverting buffer enabling master/slave handshaking and preventing bus contention during state transitions. Use Value: Dual OE inputs allow precise sequencing of data flow direction and reduce metastability risk in asynchronous transfers. |
Use Scenario: Level-translating and buffering diagnostic command signals (e.g., K-Line or proprietary UART) between MCU and vehicle subsystems. IC Role / Device Role: Inverting buffer with 125 °C rating ensuring reliable operation near engine compartments or powertrain modules. Use Value: Clamp diodes and HBM > 2000 V ESD rating protect against automotive load-dump transients and assembly-line static discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HCT366D,652 | SO16 surface-mount package (3.9 mm body width); identical electrical specs and pinout mapping. | Requires PCB rework for SMT assembly; unsuitable for breadboarding or through-hole prototyping. | Select when board space is constrained and automated assembly is used; no logic or timing change required. |
| SN74HCT366N | Functionally identical logic, but manufactured by Texas Instruments; minor differences in ICC max (160 µA vs. NXP's 160 µA) and VOH min (3.7 V @ 6 mA). | Validated in TI-specific reference designs (e.g., MSP430 interface boards); may differ in long-term availability or lot traceability. | Choose for supply chain diversification; verify VOH margin in high-fanout 5 V systems before substitution. |
Compared with 74HCT366N,652, the SO16 alternative reduces footprint but sacrifices manual assembly flexibility, while the TI variant offers second-source assurance at the cost of minor output voltage derating under heavy load.
Availability
74HCT366N,652 is available at Aetrix Electronics and suitable for industrial PLC backplanes, microcontroller peripheral expansion, legacy test equipment bus control, and automotive ECU diagnostic interfaces requiring stable component supply across extended temperature ranges.
Supply support for 74HCT366N,652 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The 74HCT366N,652 belongs to NXP's legacy 74HCT logic family, engineered for TTL-compatible interfacing in robust, high-reliability embedded systems where pin compatibility and long-term availability are critical.
FAQ
What is the maximum operating supply voltage for the 74HCT366N,652?
The 74HCT366N,652 has an absolute maximum supply voltage (VCC) of +7.0 V, but its recommended operating range is strictly 4.5 V to 5.5 V. Operation outside this window risks violating input threshold specifications and may cause excessive ICC or reduced noise margins. Always use 5.0 V ±5 % for optimal performance and compatibility with TTL systems.
Does the 74HCT366N,652 support 3.3 V logic inputs?
No, the 74HCT366N,652 does not reliably accept 3.3 V logic inputs. Its VIH minimum is 2.0 V at VCC = 4.5–5.5 V, but 3.3 V outputs from modern MCUs often fall below the guaranteed switching threshold under process/voltage/temperature variation. For 3.3 V–5 V interfacing, a level translator or 74LVC series device is required instead of the 74HCT366N,652.
Can both OE1 and OE2 be tied together on the 74HCT366N,652?
Yes, OE1 and OE2 can be connected to a single control signal on the 74HCT366N,652 to enable or disable all six outputs simultaneously. This configuration converts the device into a standard hex inverter with unified 3-state control-commonly used in simple bus drivers where group partitioning is unnecessary.
What is the output leakage current in 3-state mode for the 74HCT366N,652?
In 3-state (high-impedance) mode, the 74HCT366N,652 specifies an OFF-state output current (IOZ) of ±10.0 µA maximum at VCC = 5.5 V and TA = −40 to +125 °C. This low leakage ensures minimal loading on shared bus lines and prevents unintended logic state corruption when multiple devices are connected.
Is the 74HCT366N,652 RoHS compliant?
Yes, the 74HCT366N,652 is RoHS compliant and lead-free per EU Directive 2011/65/EU. NXP's official product documentation confirms compliance for the SOT38-1 DIP16 package variant, including exemption 7a for lead in high-melting-temperature solder alloys used in through-hole termination.
74HCT366N,652 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HCT
- Package/Case:
- 16-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 6
- 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:
- Through Hole
- Supplier Device Package:
- 16-DIP
74HCT366N,652 FAQ
1.How can I place an order for 74HCT366N,652 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT366N,652 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 74HCT366N,652 reliable?
The price and inventory of 74HCT366N,652 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT366N,652 is usually 5 days.
3.What payment methods are accepted for 74HCT366N,652?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT366N,652 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT366N,652?
74HCT366N,652 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT366N,652 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 74HCT366N,652?
For technical support, including 74HCT366N,652 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT366N,652 requirements.
6.How does Aetrix verify that 74HCT366N,652 is sourced from the original manufacturer or authorized distributors?
All 74HCT366N,652 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 74HCT366N,652 meets industry standards.
7.What is the process for return or replacement of 74HCT366N,652?
All 74HCT366N,652 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT366N,652, 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 74HCT366N,652 part is unused and in its original packaging.
Return procedure for 74HCT366N,652:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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