ChipApex | Global Electronic Components Supplier
HEF40240BT,652
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 BUFFER INVERT 15V 20SO
- Series：4000B
- Mfr：NXP USA Inc.
- Package：Tube
- Logic Type：Buffer, Inverting
- Number of Elements：2
- Number of Bits per Element：4
- Input Type：-
- Output Type：3-State
- Current - Output High, Low：62mA, 45mA
- Voltage - Supply：3V ~ 15V
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：20-SO
- Grade：-
- Qualification：-
Download product information
Overview
The HEF40240BT,652 is an octal inverting buffer with 3-state outputs manufactured by NXP USA Inc. It operates within a recommended VDD power supply range of 3 V to 15 V referenced to VSS. The device features output stages with high current capability suitable for driving highly capacitive loads. It includes hysteresis on all inputs to improve noise immunity and Schmitt-trigger action for tolerance to slow input rise and fall times. The component is pin and functionally compatible with the TTL '240' device.
Feature Summary
- Features output enable inputs (nOE) that control 3-state outputs, placing them in a high-impedance OFF-state when HIGH.
- Includes hysteresis on all inputs to enhance noise immunity and tolerate slow input transition rates.
- Provides high current output capability designed for driving highly capacitive loads.
Applications
- Driving highly capacitive loads
- Applications requiring noise immunity through input hysteresis
- Systems utilizing TTL '240' compatible logic
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and availability status. Confirm RoHS compliance details directly from the datasheet as required for your design specifications. Ensure the selected variant matches the intended operating temperature range and voltage requirements before finalizing procurement plans.
Selection Notes
Select this component when an octal inverting buffer with 3-state functionality is required. It is suitable for designs needing high current drive capabilities for capacitive loads. Verify compatibility with existing TTL '240' logic interfaces. Ensure the chosen package variant meets the physical footprint constraints of the target PCB layout.
Part Context
This part belongs to the HEF40240B series of octal inverting buffers with 3-state outputs. The BT suffix indicates the SO20 plastic small outline package variant. The device is part of the broader HEF logic family, offering standardized symmetrical output characteristics and fully static operation across the specified temperature range.
Replacement Considerations
The datasheet states the device is pin and functionally compatible with the TTL '240' device. No other specific substitute part numbers are documented in the provided source material.
FAQ
How are the 3-state outputs controlled?
The 3-state outputs are controlled by the output enable inputs (nOE). A HIGH signal on nOE causes the outputs to assume a high-impedance OFF-state.
What is the purpose of the hysteresis on the inputs?
The device features hysteresis on all inputs to improve noise immunity and provide Schmitt-trigger action, making the inputs highly tolerant to slow input rise and fall times.
