My Inquiry
My Account
Texas Instruments SN74HC368DR
- Part No.:
- SN74HC368DR
- Manufacturer:
- Texas Instruments
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN74HC368DR.pdf
- Description:
- IC BUFFER INVERT 6V 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:9,618
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74HC368DR from Texas Instruments is a hex inverting buffer and line driver with 3-state outputs, designed for memory address bus driving, clock distribution, and bidirectional data bus interfacing. It operates from 2 V to 6 V, delivers ±6 mA output drive at 5 V, exhibits typical propagation delay of 10 ns, and consumes ≤80 µA ICC. Its dual 4-line/2-line architecture supports active-low output-enable control for high-density bus management.
For engineers reviewing the SN74HC368DR datasheet, SN74HC368DR pinout, SN74HC368DR application, or SN74HC368DR equivalent, this page provides verified functional identity, SOIC-16 package mapping, confirmed 3-state inverting logic behavior, thermal and switching specifications per TI SCLS310F (Rev F), and validated alternative options for bus interface redesigns.
Technical Context
The SN74HC368DR implements six independent inverting buffers, each with active-low 3-state output enable (1OE, 2OE), enabling dual-group control over four and two channels respectively. Its CMOS HCMOS architecture ensures rail-to-rail output swing, low input current (≤1 µA), and compatibility with LSTTL loads (up to 15 units).
It functions as a bidirectional bus isolator: when OE is low, A inputs are inverted and driven to Y outputs; when OE is high, all Y outputs enter high-impedance state. This enables time-multiplexed bus sharing without contention, critical in memory address latching and shared clock routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2 V to 6 V - supports mixed-voltage system interfacing (e.g., 3.3 V logic driving 5 V legacy buses) |
| Output Drive @ 5 V | ±6 mA - sufficient to directly drive 15 LSTTL loads without external buffering |
| Propagation Delay (tpd) | 20 ns max @ VCC = 4.5 V, CL = 50 pF - enables reliable operation in sub-50 MHz synchronous bus systems |
| Quiescent Current (ICC) | 80 µA max @ VCC = 6 V - enables low-static-power operation in battery-backed or always-on control logic |
| Input Leakage Current | ±1 µA max - prevents unintended logic transitions when inputs are pulled via high-value resistors |
| 3-State Enable Timing (ten/tdis) | 48 ns max @ VCC = 4.5 V - ensures clean bus release before next data phase in multiplexed address/data cycles |
Pinout & Package
SN74HC368DR is housed in a 16-pin SOIC (D) package measuring 9.90 mm × 3.90 mm, RoHS-compliant with NiPdAu lead finish, MSL Level-1 rating, and tape-and-reel packaging (2500 pcs/reel). Pin 1 is located at the top-left corner with notch or beveled edge marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 7, 9, 11 | A1–A6 Inputs | Inverting data inputs; must be tied to VCC or GND if unused to prevent floating-induced shoot-through |
| 2, 4, 6, 8, 10, 12 | Y1–Y6 Outputs | Active-low 3-state inverted outputs; high-Z when corresponding OE is high |
| 13, 14 | 1OE, 2OE | Active-low group output enables; 1OE controls Y1–Y4, 2OE controls Y5–Y6 |
| 16 | VCC | Positive supply rail (2–6 V); requires local 0.1 µF ceramic bypass capacitor |
| 8 | GND | Ground reference; shared return path for all I/O and supply currents |
Key Features
| Feature | Design Value |
|---|---|
| Inverting 3-State Output Architecture | Enables bidirectional bus arbitration without external direction control logic |
| Dual Independent Output-Enable Inputs | Allows selective disabling of upper (Y1–Y4) and lower (Y5–Y6) buffer groups for partial bus isolation |
| High-Current Drive Capability | ±6 mA per output at 5 V eliminates need for discrete transistor buffers in memory address latch circuits |
| Low Power Consumption | 80 µA max ICC allows integration into power-constrained industrial controllers without thermal derating |
| Wide Voltage Operation | 2–6 V range supports interoperability between 3.3 V microcontrollers and 5 V peripheral buses |
Applications
| Memory Address Buffering | System Clock Distribution |
|---|---|
|
Use Scenario: Driving 16-bit address bus from microcontroller to SRAM or EPROM in embedded instrumentation. IC Role / Device Role / Timing Role: Inverting buffer with 3-state control isolates MCU address lines during DMA cycles. Use Value: Prevents bus contention during memory access arbitration while maintaining signal integrity across 15 cm PCB traces. |
Use Scenario: Distributing a single system clock to multiple peripherals (UART, SPI, ADC) with load matching. IC Role / Device Role / Timing Role: Low-skew inverting driver replicates clock with matched rise/fall times to minimize inter-peripheral skew. Use Value: Delivers <25 ns propagation delay variation across six outputs, ensuring synchronous sampling across subsystems. |
| Parallel Data Bus Isolation | Legacy Interface Translation |
|
Use Scenario: Isolating 8-bit parallel data bus between FPGA and legacy LCD controller with separate read/write strobes. IC Role / Device Role / Timing Role: Dual-OE controlled inverter enables directional data flow without external direction pins. Use Value: Eliminates need for dedicated bus transceivers by using OE signals derived from FPGA control logic. |
Use Scenario: Interfacing modern 3.3 V ARM processor GPIO to 5 V industrial I/O modules requiring inverted enable logic. IC Role / Device Role / Timing Role: Level-shifting inverter with 3-state capability adapts voltage domains and polarity requirements. Use Value: Supports direct connection without external level shifters or pull-up networks due to 2–6 V VCC tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCT368DR | CMOS-TTL compatible inputs (VIH = 2 V min), identical output drive and timing | Better noise immunity in mixed-logic systems with TTL-level sources; same SOIC-16 footprint | Select when interfacing with legacy 5 V TTL outputs or noisy industrial environments |
| 74LCX368MTCX | Lower VCC range (2–3.6 V), higher speed (tpd = 5.5 ns @ 3.3 V), 3.6 V tolerant inputs | Optimized for 3.3 V-only systems; not suitable for 5 V bus driving | Choose for high-speed, low-voltage portable designs where 5 V compatibility is unnecessary |
Compared with SN74HC368DR, SN74HCT368DR offers superior noise margin with TTL-compatible inputs but identical 3-state behavior and pinout, while 74LCX368MTCX delivers faster switching at 3.3 V but sacrifices 5 V bus-driving capability-making SN74HC368DR the optimal choice for mixed-voltage, general-purpose bus isolation.
Availability
SN74HC368DR is available at Aetrix Electronics and suitable for memory address buffering, clock distribution, parallel bus isolation, and legacy interface translation requiring stable component supply across industrial, test equipment, and embedded control programs.
Supply support for SN74HC368DR 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with over 50 years of innovation in industrial-grade ICs.
The SN74HC368DR belongs to TI's 74HC logic family, engineered for high noise immunity, low power consumption, and robust 3-state bus interface performance in industrial control and instrumentation systems.
FAQ
What is the maximum operating temperature for SN74HC368DR?
The SN74HC368DR is rated for an operating free-air temperature range of –40 °C to +85 °C, as specified in TI's SCLS310F datasheet Rev F. This makes it suitable for commercial and industrial environments where ambient temperatures remain within this envelope. Thermal derating is not required below 85 °C under recommended operating conditions.
Does SN74HC368DR support 3.3 V logic levels?
Yes, SN74HC368DR fully supports 3.3 V operation: its recommended VCC range is 2 V to 6 V, and input thresholds scale with supply voltage (VIH = 2.0 V min at VCC = 3.3 V). It drives 3.3 V LVTTL loads with ±6 mA output current and maintains 10 ns typical propagation delay, making it ideal for mixed-voltage board designs.
How are the output-enable pins configured on SN74HC368DR?
SN74HC368DR has two active-low output-enable inputs: pin 13 (1OE) controls outputs Y1–Y4, and pin 14 (2OE) controls Y5–Y6. When either OE is high, its associated outputs enter high-impedance state; when low, the corresponding A inputs are inverted and driven to Y outputs. This dual-OE structure enables granular bus segment control.
Can SN74HC368DR drive standard TTL loads?
Yes, SN74HC368DR is explicitly rated to drive up to 15 LSTTL loads per output, as stated in its datasheet features. At VCC = 5 V, it delivers ±6 mA output current-exceeding the ±0.4 mA sink/source requirement of standard TTL-ensuring reliable interfacing without external buffers in legacy system upgrades.
Is SN74HC368DR pin-compatible with other 74HC368 variants?
Yes, SN74HC368DR shares identical pinout and function with all SOIC-packaged 74HC368 variants (e.g., SN74HC368DRG4, SN74HC368DR.A) and is electrically compatible with PDIP (SN74HC368N) and TSSOP (SN74HC368PWR) versions-differing only in package dimensions, thermal metrics, and moisture sensitivity level.
SN74HC368DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SN74HC368DR FAQ
1.How can I place an order for SN74HC368DR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74HC368DR 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 SN74HC368DR reliable?
The price and inventory of SN74HC368DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74HC368DR is usually 5 days.
3.What payment methods are accepted for SN74HC368DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74HC368DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74HC368DR?
SN74HC368DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74HC368DR 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 SN74HC368DR?
For technical support, including SN74HC368DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74HC368DR requirements.
6.How does Aetrix verify that SN74HC368DR is sourced from the original manufacturer or authorized distributors?
All SN74HC368DR 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 SN74HC368DR meets industry standards.
7.What is the process for return or replacement of SN74HC368DR?
All SN74HC368DR units undergo pre-shipment inspection (PSI). If there is an issue with SN74HC368DR, 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 SN74HC368DR part is unused and in its original packaging.
Return procedure for SN74HC368DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74HC368DR 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…
