SN74ALS240ADW

Series:	74ALS
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:	15mA, 24mA
Voltage - Supply:	4.5 V ~ 5.5 V
Operating Temperature:	0°C ~ 70°C (TA)
Mounting Type:	Surface Mount
Package / Case:	20-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	20-SOIC
Base Part Number:	74ALS240

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Introduction to SN74ALS240ADW

The SN74ALS240ADW is a Buffers/Drivers/Receivers/Transceivers Logic device. It is featured in the TI’s lineup of ALS (Advanced Low-power Schottky) Logic Family of products. This device is designed primarily for the purpose of providing efficient logic gating, making it popular in the creation of reliable and cost-effective designs.

Applications of SN74ALS240ADW

The SN74ALS240ADW can be used in a wide variety of communication, memory and control applications, such as networking and distributed systems, data processing, and industrial control. It also serves as a buffer, driver and receiver in applications including interfacing with high-speed microprocessors, providing a drive function for differential chip-to-chip interconnections, and buffering STROBE and DATA signals for bus applications.In addition, this device can also be used in the implementation of addressing apparatus and other logic blocks, as well as incorporating digital buffering, paging, and peripheral recognition functions.

Features and Benefits of SN74ALS240ADW

The SN74ALS240ADW is a high-bandwidth logic device that provides a wide-signal range, fast cycle time, and low propagation delay. It is designed with Schottky-clamped inputs, which significantly reduce input capacitance and power dissipation of the device in comparison to other logic products featuring standard TTL inputs.Furthermore, the SN74ALS240ADW device offers supply voltage options: TI-s two-volt and five-volt TTL compatible applications andTTL logical generations. Other useful features include a Tri-state output, which allows bidirectional data flow, and a three-pin enable control signal INH. These capabilities enable a reliable and cost-effective bidirectional driving of transistors or system memory.

Performance of SN74ALS240ADW

The SN74ALS240ADW offers a large voltage swing with fast switching times and low power dissipation. It also has a maximum peak supply current of 7.5mA at a supply voltage of 5.0V and can clock at speeds as high as 20 MHz. It also has a Tri-State output capability, enabling bidirectional data flow.

Working Principle of SN74ALS240ADW

The SN74ALS240ADW provides logic level translation, buffering, and transmission of TTL logic signals within high-speed, low-power applications. It features Schottky-clamped inputs, which provide improved noise degradation, low propagation delay, and improved power dissipation. The TTL input thresholds are compatible with the standard Five-volt TTL, 2.0 volt ALS, and 4.5 volt-TTL thresholds.The device is capable of driving high-speed differentially-clocked systems, while allowing bidirectional data flow through the three-pin enable control input (INH). The enable control signal restricts the tri-state output, allowing the device to be controlled in either driving or receiving cycles. The SN74ALS240ADW is also capable of driving the bus capacitive loads and short lengths of transmission lines.

Conclusion

The SN74ALS240ADW is an advanced low-power Schottky Logic device. It is an ideal choice for applications that require fast logic level gating, buffering, and transmission of TTL logic levels. Its Schottky-clamped inputs provide improved noise degradation and low power dissipation. It is compatible with five-volt TTL, two-volt ALS and 4.5 volt-TTL thresholds, which allow it to be combined with standard TTL logical generations.

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