Overview
The CD4078BMT is a CMOS 8-input NOR/OR Gate produced by Texas Instruments. This component is part of the CD4078B family and is designed to provide system designers with direct implementation of positive-logic 8-input NOR and OR functions. Although the CD4078BMT is currently obsolete and no longer in production, it remains relevant for understanding and maintaining existing designs. The device is available in various package types, including the small-outline integrated circuit (SOIC) package with 14 pins.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOIC (D) | - |
| Pins | 14 | - |
| Operating Temperature Range | -55 to 125 | °C |
| Propagation Delay (t_PHL, t_PLH) | 75 ns (typ.) at V_DD = 10 V | ns |
| Input Current | 1 µA at 28 V, 100 nA at 18 V and 25°C | µA/nA |
| Noise Margin | 1 V at V_DD = 5 V, 2 V at V_DD = 10 V, 2.5 V at V_DD = 15 V | V |
| Quiescent Current Test | 100% tested at 20 V | - |
Key Features
- Medium-speed operation with propagation delays of 75 ns (typ.) at V_DD = 10 V.
- Buffered inputs and outputs.
- Parametric ratings at 5 V, 10 V, and 15 V.
- Standardized symmetrical output characteristics.
- Low input current: 1 µA at 28 V over the full package-temperature range, and 100 nA at 18 V and 25°C.
- High noise margin: 1 V at V_DD = 5 V, 2 V at V_DD = 10 V, and 2.5 V at V_DD = 15 V.
- Meets all requirements of JEDEC Tentative Standard No. 13B for 'B' Series CMOS Devices.
Applications
The CD4078BMT is suitable for a variety of digital logic applications where 8-input NOR or OR functions are required. It can be used in systems that need medium-speed CMOS logic gates, such as in digital circuits, microprocessor systems, and other electronic devices that require reliable and low-power logic operations.
Q & A
- What is the CD4078BMT?
The CD4078BMT is a CMOS 8-input NOR/OR Gate produced by Texas Instruments.
- What package types are available for the CD4078B family?
The CD4078B family is available in various package types, including hermetic dual-in-line ceramic packages, dual-in-line plastic packages, small-outline packages (SOIC), and thin shrink small-outline packages (TSSOP).
- What is the propagation delay of the CD4078BMT?
The propagation delay (t_PHL, t_PLH) is typically 75 ns at V_DD = 10 V.
- What is the operating temperature range of the CD4078BMT?
The operating temperature range is -55°C to 125°C.
- What are the noise margins for the CD4078BMT?
The noise margins are 1 V at V_DD = 5 V, 2 V at V_DD = 10 V, and 2.5 V at V_DD = 15 V.
- Is the CD4078BMT still in production?
No, the CD4078BMT is obsolete and no longer in production.
- What are the input current characteristics of the CD4078BMT?
The input current is 1 µA at 28 V over the full package-temperature range and 100 nA at 18 V and 25°C.
- Does the CD4078BMT meet any specific standards?
Yes, it meets all requirements of JEDEC Tentative Standard No. 13B for 'B' Series CMOS Devices.
- What are some typical applications for the CD4078BMT?
It is suitable for digital logic applications requiring 8-input NOR or OR functions, such as in digital circuits and microprocessor systems.
- What is the quiescent current test condition for the CD4078BMT?
The device is 100% tested for quiescent current at 20 V.
