ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC GATE NAND 2CH 4-INP 14CDIP
- Series：-
- Mfr：National Semiconductor
- Package：Bulk
- Logic Type：NAND Gate
- Number of Circuits：2
- Number of Inputs：4
- Features：-
- Voltage - Supply：4.75V ~ 5.25V
- Current - Quiescent (Max)：40 mA
- Current - Output High, Low：-
- Input Logic Level - Low：-
- Input Logic Level - High：-
- Max Propagation Delay @ V, Max CL：12ns @ 5V, 50pF
- Operating Temperature：0°C ~ 70°C
- Mounting Type：Through Hole
- Supplier Device Package：14-CDIP
- Package / Case：14-CDIP (0.300", 7.62mm)
- Grade：-
- Qualification：-
Download product information
Overview
The 74H40DC is a dual 4-input positive NAND gate integrated circuit manufactured by National Semiconductor. It operates within a supply voltage range of 4.75V to 5.25V and features a maximum quiescent current of 40 mA. The device exhibits a maximum propagation delay of 12 ns at the specified load capacitance. It is housed in a 14-pin Small Outline Dual In-line Package (SBDIP).
Feature Summary
- Implements dual independent 4-input positive NAND logic functions.
- Operates with complementary output polarity for standard digital signaling.
Applications
- General-purpose digital logic circuits requiring NAND operations.
- Signal gating and switching applications in TTL-compatible systems.
Procurement Notes
Verify the manufacturer origin, as National Semiconductor assets are managed by Texas Instruments. Confirm the package type matches the required footprint. Ensure the component meets RoHS compliance requirements if applicable to the assembly process. Check for date code restrictions or specific lot traceability needs.
Selection Notes
Select this component when a dual 4-input NAND function is required in a small outline package. Consider the 12 ns propagation delay for timing constraints. Verify that the 4.75V to 5.25V supply range aligns with the system power design. Compare pinout compatibility with existing PCB layouts before integration.
Part Context
This part belongs to the 74 series of logic integrated circuits, specifically designed for high-speed TTL applications. It provides reliable logic inversion and combination capabilities. The SBDIP package offers a compact form factor suitable for dense circuit board designs while maintaining standard pin configurations for ease of replacement.
Replacement Considerations
Equivalent parts include the SN74H40N from Texas Instruments. Verify pin compatibility and electrical specifications before substitution. Ensure the alternative package type matches the physical constraints of the target application.
FAQ
What is the maximum propagation delay of the 74H40DC?
The maximum propagation delay is 12 ns at the specified load capacitance.
How many NAND gates are contained in the 74H40DC?
The device contains two independent 4-input NAND gates.
