My Inquiry
My Account
Nexperia USA Inc. 74HCT366D,652
- Part No.:
- 74HCT366D,652
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HCT366D,652.pdf
- Description:
- IC BUFFER INVERT 5.5V 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,831
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74HCT366D,652 from Nexperia is a hex inverting 3-state buffer/line driver IC designed for bus interface and signal isolation in digital systems. It features TTL-compatible inputs (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V), dual active-low output enables (OE1/OE2), and operates across -40 °C to +125 °C with supply voltage 4.5–5.5 V. Used in industrial control backplanes and microcontroller I/O expansion where bidirectional bus contention must be avoided.
For engineers reviewing the 74HCT366D,652 datasheet, 74HCT366D,652 pinout, 74HCT366D,652 application, or 74HCT366D,652 equivalent, key selection criteria include TTL-level input compatibility, guaranteed 3-state OFF-leakage (IOZ ≤ ±10 μA at 125 °C), propagation delay ≤36 ns (VCC = 4.5 V), enable/disable timing ≤53 ns, and SO16 package thermal performance up to 125 °C ambient.
Technical Context
The 74HCT366D,652 implements six independent inverting buffers, each with separate input (nA) and output (nY), controlled by two shared active-low 3-state enable inputs (OE1 on pin 1, OE2 on pin 15). Its TTL-input threshold design ensures direct interfacing with legacy 5 V logic families without level shifting.
Each output transitions between defined VOH/VOL levels (VOH ≥ 3.7 V, VOL ≤ 0.4 V at IO = ±6 mA, VCC = 4.5 V, 125 °C) and enters high-impedance state within 53 ns of OE assertion, supporting hot-swap-capable bus arbitration and low-power standby modes in multi-driver systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | 74HCT - TTL-compatible CMOS, enabling direct connection to 5 V bipolar logic without pull-ups |
| Supply Voltage Range | 4.5 V to 5.5 V - Matches standard 5 V system rails; excludes 3.3 V operation |
| Input Thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V - Guarantees noise margin >0.4 V against TTL output swings |
| Propagation Delay | ≤36 ns @ VCC = 4.5 V, Tamb = 125 °C - Sufficient for ≤10 MHz bus clocking with setup margin |
| 3-State Leakage | IOZ ≤ ±10 μA @ VCC = 5.5 V, Tamb = 125 °C - Prevents false logic states during bus sharing |
| Output Drive | ±6.0 mA @ VOH/VOL specs - Supports 50 Ω transmission lines and fan-out to 10 LS-TTL loads |
| Operating Temperature | -40 °C to +125 °C - Qualified for extended industrial and under-hood applications |
Pinout & Package
74HCT366D,652 is housed in a plastic small outline package (SO16, SOT109-1) with 16 leads, 3.9 mm body width, and standard 1.27 mm lead pitch. Pin 1 is marked by a notch or dot; pin numbering follows counter-clockwise convention from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 (OE1, OE2) | Active-low 3-state enable | Both must be LOW to enable any output; HIGH places all six outputs in high-Z state |
| 2, 4, 6, 10, 12, 14 (1A–6A) | Inverting data input | Each drives corresponding inverted output (1Y–6Y); includes clamp diodes for overvoltage tolerance |
| 3, 5, 7, 9, 11, 13 (1Y–6Y) | Inverting buffered output | Outputs mirror inverted logic of respective A inputs when OE1/OE2 are active LOW |
| 8 | GND | Reference ground for all logic and power terminals; decoupling capacitor required adjacent to pin |
| 16 | VCC | +5 V supply rail; requires local 100 nF ceramic decoupling to GND (pin 8) |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible input thresholds | Enables direct interface with 74LS, 74F, and other 5 V bipolar logic families without level shifters |
| Dual independent output enables | Allows partitioned bus control - e.g., OE1 for address lines, OE2 for data lines - reducing external logic |
| Guaranteed 125 °C operation | Validated static/dynamic performance across full industrial temperature range, not derated |
| Low dynamic power dissipation | CPD = 30 pF per buffer - limits switching current and heat rise in high-frequency bus applications |
| ESD robustness | HBM >2000 V, CDM >1000 V - reduces handling sensitivity and improves board-level reliability |
Applications
| Industrial PLC Backplane Interface | Microcontroller I/O Expansion |
|---|---|
Use Scenario: Isolating CPU address/data buses from multiple peripheral modules on a DIN-rail mounted controller backplane. IC Role / Device Role / Timing Role: Inverting 3-state buffer providing direction-controlled signal routing and bus contention prevention during read/write cycles. Use Value: Dual OE pins allow independent gating of address (OE1) and data (OE2) segments, eliminating need for external AND gates and reducing PCB layer count. | Use Scenario: Expanding GPIO count of an ARM Cortex-M0+ MCU operating at 5 V logic levels in a smart sensor node. IC Role / Device Role / Timing Role: Level-shifting and buffering TTL-compatible signals from MCU to external 5 V peripherals (ADCs, displays, relays). Use Value: Guaranteed VIH/VIL margins ensure reliable sampling of noisy industrial sensor signals without external Schmitt triggers. |
| Legacy System Bus Arbitration | Test Equipment Signal Conditioning |
Use Scenario: Managing shared ISA-style 8-bit data bus among multiple add-in cards in a retro-computing diagnostic platform. IC Role / Device Role / Timing Role: Hex inverting buffer with fast enable/disable (≤53 ns) enabling precise time-sliced bus access control. Use Value: Sub-60 ns tdis/ten supports deterministic bus turnaround at 8 MHz, meeting original ISA timing budgets. | Use Scenario: Driving calibrated 50 Ω coaxial traces from FPGA I/O banks in automated test equipment (ATE) stimulus modules. IC Role / Device Role / Timing Role: Impedance-matched line driver with controlled transition time (tt ≤18 ns) minimizing reflections on long traces. Use Value: Specified tt and VOH/VOL at ±6 mA ensure <5% overshoot on 50 Ω loads, preserving signal fidelity for sub-ns edge alignment. |
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 |
|---|---|---|---|
| 74HCT240D,653 | Octal (8-channel), non-inverting/inverting dual-function; higher pin count (20-pin SO) | Supports larger buses but requires layout redesign; no functional drop-in replacement | Select only if octal capacity and mixed inversion are needed; not suitable for 16-pin footprint-constrained designs |
| SN74HCT366DR | Identical logic function and pinout; TI's SO-16 variant with tighter VOH min (3.98 V vs 3.7 V @ 125 °C) | Same PCB footprint and interconnect; validated for automotive temp range (-40 °C to +125 °C) | Prefer for AEC-Q100-aligned designs requiring manufacturer diversity; verify TI's qualification scope matches end-use environment |
Compared with 74HCT240D,653, the 74HCT366D,652 offers exact pin compatibility and lower gate count for compact 6-signal interfaces; versus SN74HCT366DR, it provides identical functionality with Nexperia's extended lifetime product assurance and optimized ESD robustness (HBM >2000 V).
Availability
74HCT366D,652 is available at Aetrix Electronics and suitable for industrial PLC backplanes, microcontroller I/O expansion, legacy bus arbitration, and test equipment signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for 74HCT366D,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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, analog, and MOSFET solutions for industrial, automotive, and consumer markets.
The 74HCT series targets robust 5 V digital interfacing, emphasizing TTL compatibility, wide temperature operation, and manufacturing consistency for long-lifecycle industrial deployments.
FAQ
Is 74HCT366D,652 compatible with 3.3 V microcontroller I/O?
No - the 74HCT366D,652 is specified only for 4.5–5.5 V VCC operation and has TTL-level input thresholds (VIH ≥ 2.0 V). While 3.3 V outputs may register as HIGH in some cases, VIH is not guaranteed below 4.5 V supply, and VOL/VOH specs do not apply at 3.3 V. Use 74LVC366 or level translators for 3.3 V systems.
What is the maximum capacitive load this device can drive reliably?
The 74HCT366D,652 is characterized with CL = 50 pF in dynamic testing, and its transition time (tt ≤18 ns at 125 °C) remains stable up to 75 pF per output. For loads exceeding 50 pF, verify signal integrity via oscilloscope measurement; layout best practices (short traces, ground plane, local decoupling) are essential above 30 pF.
Can OE1 and OE2 be tied together for single-enable operation?
Yes - OE1 (pin 1) and OE2 (pin 15) are electrically independent but functionally identical. Tying them together simplifies control logic and reduces MCU GPIO usage. No additional components are needed; the combined enable net must be driven actively LOW to activate all six buffers.
Does this part support hot insertion into a live backplane?
Not inherently - while the 74HCT366D,652 features input clamp diodes and high-impedance outputs, it lacks dedicated hot-swap protection circuitry (e.g., slew-rate limiting, undervoltage lockout). Safe hot insertion requires external current-limiting resistors on inputs/outputs and sequencing control of VCC/GND; refer to Nexperia Application Note AN10352 for implementation guidance.
74HCT366D,652 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- Surface Mount
- Supplier Device Package:
- 16-SO
74HCT366D,652 FAQ
1.How can I place an order for 74HCT366D,652 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT366D,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 74HCT366D,652 reliable?
The price and inventory of 74HCT366D,652 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT366D,652 is usually 5 days.
3.What payment methods are accepted for 74HCT366D,652?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT366D,652 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT366D,652?
74HCT366D,652 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT366D,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 74HCT366D,652?
For technical support, including 74HCT366D,652 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT366D,652 requirements.
6.How does Aetrix verify that 74HCT366D,652 is sourced from the original manufacturer or authorized distributors?
All 74HCT366D,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 74HCT366D,652 meets industry standards.
7.What is the process for return or replacement of 74HCT366D,652?
All 74HCT366D,652 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT366D,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 74HCT366D,652 part is unused and in its original packaging.
Return procedure for 74HCT366D,652:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HCT366D,652 Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
