M74HC4049B1N STMicroelectronics Integrated Circuit (Dual-In-Line Packages) In Stock
M74HC4049B1N is a hex inverting buffer and logic level converter from STMicroelectronics in a DIP-16 package. Provides 6 independent inverter channels operating across 2 V to 6 V supply with 6 mA sink current. Available worldwide with fast shipping.
- Manufacturer
- STMicroelectronics
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- M74HC4049B1N Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of M74HC4049B1N?
- 6 independent inverting buffer channels in a single DIP-16 package for compact logic inversion and level shifting
- HC family operation from 2 V to 6 V supply enables interfacing between 3.3 V and 5 V logic systems
- 6 mA output sink current per channel drives LEDs and resistive loads without additional driver stages
- 50 pF specified load capacitance with HC-speed propagation for reliable operation in mixed-logic PCBs
What is M74HC4049B1N used for?
The M74HC4049B1N is commonly used in microcontroller designs requiring logic-level conversion from higher-voltage systems (5 V) down to 3.3 V compatible inputs, leveraging the HC family's wide supply range. It also serves as a signal buffer in relay driver circuits, LED indicator arrays, and inverting driver stages where up to 6 mA per channel is needed without a dedicated power driver IC. Through-hole DIP-16 packaging makes it convenient for prototyping, educational platforms, and legacy industrial equipment.
What are the specifications of M74HC4049B1N?
| YTEOL | 0 |
| Family | HC/UH |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | INVERTER |
| Max I(ol) | 0.006A |
| Number of Functions | 6 |
| Number of Inputs | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Prop. Delay@Nom-Sup | 21ns |
| Propagation Delay (tpd) | 125ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | TIN LEAD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.60 |
Where can I find the M74HC4049B1N datasheet?
M74HC4049B1N Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for M74HC4049B1N?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many inverter channels does the M74HC4049B1N provide, and can they be used independently?
The M74HC4049B1N contains 6 independent inverting buffer channels in a single DIP-16 package. Each channel has its own input and output pins, allowing all 6 to be used simultaneously for different signals with no inter-channel dependency, up to the device's 6 V maximum supply voltage.
Can the M74HC4049B1N convert 5 V logic signals to 3.3 V compatible levels in a mixed-voltage design?
Yes. Powered from a 3.3 V supply, the M74HC4049B1N accepts inputs up to 6 V, making it suitable for converting 5 V logic outputs to 3.3 V level outputs. Each channel sinks up to 6 mA, which is compatible with standard HC-family receiver input thresholds at 3.3 V.
What output current does the M74HC4049B1N support, and can it directly drive indicator LEDs?
Each channel sources or sinks up to 6 mA. A standard 5 V red LED with a 330 ohm series resistor draws approximately 10 mA, so the M74HC4049B1N can drive lower-current LEDs such as 2 mA indicator types directly, but higher-brightness LEDs at 20 mA require an external transistor or dedicated LED driver.
When should a designer choose M74HC4049B1N over a non-inverting HC buffer like 74HC244 for a logic interface circuit?
The M74HC4049B1N is preferred when the downstream circuit requires inverted signal polarity, saving a separate inversion stage, and when only 6 channels are needed rather than 8. For active-low enable driving or logic complement generation, the inverting configuration eliminates one component. The 74HC244 is better when 8 non-inverting tri-state outputs with separate output enable are required.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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