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NXP Semiconductors 74HCT368D,652
- Part No.:
- 74HCT368D,652
- Manufacturer:
- NXP Semiconductors
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HCT368D,652.pdf
- Description:
- IC BUFFER INVERT 5.5V 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:6,200
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Product details
Overview
74HCT368D,652 from Nexperia is a hex inverting 3-state buffer/line driver in SO16 package, operating at 4.5–5.5 V supply with TTL-compatible inputs, 13 ns typical propagation delay (VCC = 4.5 V), ±6 mA output drive, and -40 °C to +125 °C temperature range - used for bidirectional bus interfacing in industrial control backplanes.
For engineers reviewing the 74HCT368D,652 datasheet, 74HCT368D,652 pinout, 74HCT368D,652 application, or 74HCT368D,652 equivalent, key selection criteria include TTL-level input compatibility, 3-state enable timing (17 ns enable / 20 ns disable), output leakage < ±5 μA in high-impedance mode, and SO16 thermal derating above 110 °C.
Technical Context
This device implements six independent inverting buffers, each with active-low 3-state output control via dedicated OE pins (1OE on Pin 1, 2OE on Pin 15). Its TTL-input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 5 V) ensure direct compatibility with legacy 5 V logic families without level-shifting.
Dynamic operation is characterized by tightly specified enable/disable timing (ten = 17 ns, tdis = 20 ns at VCC = 4.5 V, CL = 15 pF) and low transition time (tt = 5 ns), enabling reliable use in multiplexed address/data buses where output contention avoidance is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5–5.5 V - matches standard 5 V TTL systems; avoids need for external regulators. |
| Input Logic Type | TTL-compatible - accepts 0.8 V max low and 2.0 V min high, eliminating level translators. |
| Propagation Delay | 13 ns typ (nA to nY, VCC = 4.5 V, CL = 15 pF) - supports >30 MHz bus toggle rates. |
| Output Drive | ±6 mA - sufficient to drive 50 Ω transmission lines or 10 LSTTL loads directly. |
| 3-State Leakage | ±5.0 μA max (VO = VCC/GND, VI = VIH/VIL) - ensures minimal bus loading during disable. |
| Operating Temp | -40 °C to +125 °C - qualified for under-hood industrial and extended-temperature embedded applications. |
| Power Dissipation | 8.0 μA ICC per input (VCC = 5.5 V) - enables low-static-power system standby modes. |
Pinout & Package
74HCT368D,652 uses the SOT109-1 (SO16) plastic small outline package: 16-pin, 3.9 mm body width, 1.27 mm lead pitch, JEDEC MS-012 compliant, with gull-wing leads suitable for reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | 1OE, 2OE | Active-low 3-state enable inputs - each controls three outputs; LOW enables, HIGH disables. |
| 2, 4, 6, 10, 12, 14 | 1A–6A | Inverting data inputs - drive corresponding Y outputs with logical inversion. |
| 3, 5, 7, 9, 11, 13 | 1Y–6Y | Inverting 3-state outputs - reflect inverted A inputs when OE is LOW; high-Z when OE is HIGH. |
| 8 | GND | Ground reference - must be low-impedance connection to minimize switching noise coupling. |
| 16 | VCC | Positive supply - decoupling capacitor (100 nF) required within 10 mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 4.5–5.5 V operation - accommodates 5 % tolerance power rails without regulation. |
| TTL Input Compatibility | VIH ≥ 2.0 V, VIL ≤ 0.8 V - eliminates need for external pull-ups or level shifters in 5 V systems. |
| Low Dynamic Power | CPD = 30 pF per buffer - enables predictable dynamic power calculation (PD = CPD × VCC² × fi × N). |
| High Noise Immunity | ΔVNS = 0.4 V min (VCC = 5 V) - rejects common-mode noise on shared bus lines. |
| ESD Robustness | HBM > 2000 V, CDM > 1000 V - withstands handling and board-level ESD events without protection diodes. |
Applications
| Industrial Backplane Bus Driver | Legacy Microcontroller I/O Expander |
|---|---|
|
Use Scenario: Driving multiplexed address/data lines between PLC CPU and modular I/O cards over 15 cm PCB traces. IC Role / Device Role / Timing Role: Inverting 3-state buffer isolating bidirectional bus segments; OE timed to avoid contention during direction switching. Use Value: 17 ns enable time ensures clean bus turn-around; ±6 mA drive sustains signal integrity across 50 Ω trace impedance. |
Use Scenario: Extending GPIO count of an 8-bit MCU (e.g., ATmega328P) to interface with multiple SPI peripherals sharing MISO/MOSI lines. IC Role / Device Role / Timing Role: Output-enable-controlled inverting buffer enabling/disabling peripheral data paths on demand. Use Value: TTL-compatible inputs accept MCU's native 0.5 V/2.4 V logic levels; low ICC (8 μA) minimizes standby current draw. |
| Test Equipment Signal Routing | Automated Test Fixture Control |
|
Use Scenario: Selectively routing calibrated analog reference signals to DUT channels using digital control in ATE systems. IC Role / Device Role / Timing Role: Inverting buffer with 3-state outputs acting as digitally controlled analog switch matrix element. Use Value: < ±5 μA high-Z leakage prevents reference voltage droop; 5 ns transition time preserves signal edge fidelity. |
Use Scenario: Controlling relay drivers and LED status indicators in production test jigs requiring synchronized ON/OFF sequencing. IC Role / Device Role / Timing Role: Hex inverter driving discrete transistor switches; OE pins sequenced to stagger activation and limit inrush current. Use Value: Independent OE pins (1OE/2OE) allow grouped control of 3 outputs each - simplifies timing-critical power-up sequencing. |
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 |
|---|---|---|---|
| SN74HCT368N | Dual-in-line (PDIP16) package; identical electrical specs but 2.54 mm pitch and higher thermal resistance (θJA = 70 °C/W vs. 58 °C/W). | Suitable for prototyping or through-hole assembly; not recommended for high-density or thermally constrained PCBs. | Select for breadboard evaluation or legacy through-hole manufacturing lines. |
| 74LVC368PW | Lower VCC range (1.65–3.6 V); CMOS inputs; 3.3 V only; 3.5 ns propagation delay; 24 mA drive. | Designed for modern low-voltage mixed-signal systems; incompatible with 5 V buses without translation. | Choose only for 3.3 V domains requiring faster timing and higher drive - not a drop-in replacement. |
Compared with SN74HCT368N, 74HCT368D,652 offers superior thermal performance and surface-mount compatibility; versus 74LVC368PW, it maintains full 5 V interoperability at the cost of slightly higher propagation delay and lower drive strength.
Availability
74HCT368D,652 is available at Aetrix Electronics and suitable for industrial backplane bus drivers, microcontroller I/O expansion, automated test fixture control, and signal routing applications requiring stable component supply across extended temperature ranges.
Supply support for 74HCT368D,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 specializing in high-performance, high-reliability logic, analog, and discrete components for automotive, industrial, and consumer markets.
The 74HCT series targets robust 5 V logic interfacing with TTL compatibility and extended temperature operation - designed specifically for industrial control, instrumentation, and legacy system upgrades.
FAQ
What is the maximum clock frequency supported by 74HCT368D,652?
The device does not operate as a clocked sequential circuit; its maximum usable toggle rate is determined by propagation delay and transition time. With 13 ns tpd and 5 ns tt, it reliably supports bus data rates up to 30 MHz in point-to-point configurations with 15 pF load. System-level timing must account for trace delays and setup/hold margins.
Can 74HCT368D,652 drive a 50 Ω transmission line directly?
Yes - its ±6 mA output drive at VOH/VOL specifications meets the current requirement for terminating a 50 Ω line at 5 V (100 mA needed for full swing is not required; 6 mA suffices for short traces with proper termination). For longer lines or stricter signal integrity, external series resistors or dedicated line drivers are recommended.
Is there a non-inverting version of this part?
Yes - the 74HCT367D,652 is the functional complement: hex non-inverting 3-state buffer with identical pinout, electrical specs, and SO16 packaging. It shares the same 1OE/2OE control architecture and operates across the same 4.5–5.5 V and -40 °C to +125 °C range.
Does 74HCT368D,652 require external pull-up resistors on OE pins?
No - OE pins are active-low CMOS inputs with negligible DC leakage (< ±0.1 μA). When driven actively by a microcontroller or FPGA, no pull-ups are needed. If left unconnected, OE floats HIGH (disable state), but that condition is not recommended due to noise susceptibility; always tie unused OE pins to VCC via 10 kΩ resistor or drive them logically.
74HCT368D,652 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HCT
- Package/Case:
- 16-SOIC (0.154", 3.90mm 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:
- 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
74HCT368D,652 FAQ
1.How can I place an order for 74HCT368D,652 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT368D,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 74HCT368D,652 reliable?
The price and inventory of 74HCT368D,652 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT368D,652 is usually 5 days.
3.What payment methods are accepted for 74HCT368D,652?
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4.How is shipping managed for 74HCT368D,652?
74HCT368D,652 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT368D,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 74HCT368D,652?
For technical support, including 74HCT368D,652 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT368D,652 requirements.
6.How does Aetrix verify that 74HCT368D,652 is sourced from the original manufacturer or authorized distributors?
All 74HCT368D,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 74HCT368D,652 meets industry standards.
7.What is the process for return or replacement of 74HCT368D,652?
All 74HCT368D,652 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT368D,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 74HCT368D,652 part is unused and in its original packaging.
Return procedure for 74HCT368D,652:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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