SN74AHCT240N

Series:	74AHCT
Packaging:	Tube
Part Status:	Active
Logic Type:	Buffer, Inverting
Number of Elements:	2
Number of Bits per Element:	4
Input Type:	--
Output Type:	3-State
Current - Output High, Low:	8mA, 8mA
Voltage - Supply:	4.5 V ~ 5.5 V
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Through Hole
Package / Case:	20-DIP (0.300", 7.62mm)
Supplier Device Package:	20-PDIP
Base Part Number:	74AHCT240

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Logic - Buffers, Drivers, Receivers, TransceiversThe SN74AHCT240N is a high-performance level-converter integrated circuit (IC) with a CMOS-enabled technology, which is manufactured by Texas Instruments. This device can be found in a wide range of electronic systems, both in consumer electronics and in industrial setups. It is a versatile device which is used for various logic applications and it has a wide range of applications including bidirectional logic level conversion, bus-oriented systems and numerous other circuit configurations.The SN74AHCT240N is a member of the SN family, which is a 3-STATE octal bus transceiver fully compatible with the TTL logic system. In this device 5V VCC is the input, with a dual supply voltage of a minimum of 4.75V and a maximum of 5.25V. The operating temperature range is -55°C to 125°C, and the IC has standard packing with either a 20-pin plastic or 20-pin ceramic package.The SN74AHCT240N logic IC is used in many types of systems as it has various advantages. Firstly, it has a high-speed switching capability. It is able to switch from the TTL logic family to the CMOS logic family with lower propagation delays, as it has high speed for signal conversion compared to a conventional buffer. Secondly, its output is able to drive up to 15 TTL/NMOS loads. It is also has low input capacitance and high output current capability. Finally, the device has 3-STATE TTL-compatible outputs, which allows it to be connected to the bus-based systems.The SN74AHCT240N has two major categories of logic inputs - signal PC and signal PC*. These two input pins are used to activate the logic control circuitry of this IC. PC is used to set the logic state of the PC input to LOW, while PC* is used to set the logic state of PC to HIGH. When both PC and PC* inputs are LOW, the SN74AHCT240N will be disabled and the output will be in a Hi-Z state. When both PC and PC* inputs are HIGH, the SN74AHCT240N will be enabled, and the output logic state can be either HIGH or LOW, depending on the logic status of the input signal.The logic operation of the SN74AHCT240N can be explained in three different conditions. Firstly, when an active LOW signal is applied at the PC input, the active enables the SN74AHCT240N, but the output remains in a Hi-Z state. Secondly, when an active HIGH signal is applied at the PC* input, the SN74AHCT240N is enabled, and the output will switch to the logic status of the input signal. Thirdly, when both PC and PC* inputs are in a HIGH state, the SN74AHCT240N is disabled and the output will remain in a Hi-Z state.The SN74AHCT240N can be used as a level-converter between different logic families. When the input signal is TTL, the SN74AHCT240N can be used to interface with the standardized logic levels of CMOS. The device is capable of converting the TTL logic levels to CMOS logic levels and vice versa, allowing it to be used as a level-converter between different logic families. This capability makes the SN74AHCT240N particularly attractive for use in Mixed-Signal circuits, and in other applications where the interface between a TTL and a CMOS circuit is required.The SN74AHCT240N is also capable of acting as an open collector buffer between two logic families. The output of the device is active HIGH, which allows it to act as an open collector buffer. This functionality makes the SN74AHCT240N useful in many different applications, such as a bus driver, a bus receiver, a three-state buffer, or an inverter.The SN74AHCT240N is a versatile and reliable logic IC and it can be used in a variety of applications that require level-shifting, open-collector buffering, or any other 3-state type operation. With its capabilities, this device provides an excellent solution for a wide range of logic applications and it is a popular choice for many electronics designs.

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