Allicdata Part #: | 74F640PC-ND |
Manufacturer Part#: |
74F640PC |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | ON Semiconductor |
Short Description: | IC TRANSCVR INVERT 5.5V 20DIP |
More Detail: | Transceiver, Inverting 1 Element 8 Bit per Element... |
DataSheet: | 74F640PC Datasheet/PDF |
Quantity: | 1000 |
Series: | 74F |
Packaging: | Tube |
Part Status: | Obsolete |
Logic Type: | Transceiver, Inverting |
Number of Elements: | 1 |
Number of Bits per Element: | 8 |
Current - Output High, Low: | 15mA, 64mA |
Voltage - Supply: | 4.5 V ~ 5.5 V |
Operating Temperature: | 0°C ~ 70°C (TA) |
Mounting Type: | Through Hole |
Package / Case: | 20-DIP (0.300", 7.62mm) |
Supplier Device Package: | 20-PDIP |
Base Part Number: | 74F640 |
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The 74F640 is a family of high-performance and low power CMOS devices belonging to the 7400 series of logic chips. The 7400 series covers a wide range of applications, from high-speed logic to analog applications. As part of the 7400 series, the 74F640 is specifically designed to provide low power, high speed logic at a cost-effective price. The 74F640 is available in both surface mount and through-hole packages.
74F640 Application Field
The 74F640 is widely used in applications such as communications, video/audio applications, computer and peripheral systems, medical systems, and industrial/automotive applications. Specifically, the device is most commonly used in high speed switching and level shifting applications, as well as in pulse width modulation and pulse shaping applications.
74F640 Functional Description
The 74F640 is a logic - buffers, drivers, receivers, transceivers device. It is an 8-bit buffer/driver with active LOW outputs. The device is composed of five independent 2-bit active LOW Buffer/Driver/Receiver pairs. The TTL/CMOS compatible inputs tolerate negative edge or level triggered input signals up to +5 V and are capable of driving outputs up to +5 V or +3.3 V. The internal clamp diodes provide simple level shifting between VCC and GND.
The 74F640 is enabled by a logic LOW on the enable line (ENL). When enabled, the input signals at A0-A7 are presented to the outputs Y0-Y7 in the same sequence. When the enable input is logic HIGH, all outputs are in the HIGH state. The enable can be connected to VCC (Active High) or GND (Active Low) to provide a permanent enable/disable output. The 74F640 is available in the standard 14-pin, 16-pin, 20-pin and 24-pin packages.
74F640 Working Principle
When enabled, the 74F640 functions as an eight-bit buffer/driver, where each output can be either enabled or disabled. Each output is composed of a 2-bit driver that can be controlled by the enable (ENL) line. This allows each output of the device to be enabled or disabled independently of the others. If the enable line (ENL) is logic LOW, each of the outputs will be enabled by the corresponding A0-A7 input. When disabled, all the outputs will remain in the logic HIGH state. When the enable line (ENL) is logic HIGH, all outputs of the device are in the logic HIGH state, regardless of the input condition.
When disabled, the current drawn by the device is considerably less than when enabled. This allows the device to be used in portable or battery-powered applications where current draw is an issue. The device is also designed to work with both TTL and CMOS logic levels to protect it from damage in case of a voltage mismatch.
Finally, the 74F640 is designed to operate at a wide range of frequencies. The device is capable of operating at frequencies up to 1 MHz, enabling it to be used in high-speed applications. The device is also designed to tolerate negative edge or level triggered input signals up to +5 V and is capable of driving outputs up to +5 V or +3.3 V.
Conclusion
The 74F640 is an 8-bit buffer/driver that belongs to the 7400 series of logic chips. This logic chip is designed to provide low power, high speed logic at a cost-effective price. The 74F640 is mostly used in high speed switching and level shifting applications, as well as in pulse width modulation and pulse shaping applications. The 74F640 is available in both surface mount and through-hole packages and can be used for a wide range of applications.
The specific data is subject to PDF, and the above content is for reference
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