SN74AHC245QPWRQ1

The SN74AHC245QPWRQ1 device is a high-speed, low-power octal bus transceiver with selectable direction control that is used to interface with parallel buses. It is part of the ‘74AHC’ family of and is designed for use in a wide range of applications including, for example, automotive and industrial. Its impressive performance characteristics, versatile operation and efficient use of resources make it a great choice for many applications.

The SN74AHC245QPWRQ1 is a loaded octal transceiver that contains a 3-State non-inverting buffer, which allows the user to move data in either direction between two buses. The data is shifted in 8-bit parallel transfers on the data lines connected to each of the transceiver\'s ports. A selectable direction control (DIR) pin is used to select the direction of the transceiver\'s flow. The following figure illustrates how this device works in a typical application.

The SN74AHC245QPWRQ1 accepts two logic level compatible input signals from the two buses and sends them to a 3-state output port. The data direction is controlled by a single data direction input (DIR). If the DIR pin is low, the data flows into the low side bus, otherwise the data flows out of the low side bus. The outputs of the SN74AHC245QPWRQ1 are controlled by three logic level control input signals: Input Enable (IE), Output Enable (OE) and Select (SEL). IE enables the input buffers which are disabled when not in use; OE enables the output buffers which are disabled when not in use; and SEL enables the 3-state outputs, making them high impedance (HiZ) when not in use.

The SN74AHC245QPWRQ1 offers two important benefits to users—low power consumption and fast propagation delay. It consumes very low power of 2.2μA (typical) at VCC = 5V and can operate at up to 100 MHz. The SN74AHC245QPWRQ1 also offers low-power active current of 2mA (typical) and total standby current of 400 μA (typical). Its propagation delay is also relatively low for a device of this type—typically 9 ns and maximum of 33ns. The device can also be used in hot pluggable and dynamic bus environments where bus speed is not predetermined.

The SN74AHC245QPWRQ1 is available in several packaging configurations, including surface mount, through-hole and dual in-line package (DIP). It is also available in both 5 and 3.3V versions and an ESD rating of 2kV (human body model). All these factors make the SN74AHC245QPWRQ1 an excellent choice for a wide range of applications.

To sum up, the SN74AHC245QPWRQ1 is a versatile, high-speed, low-power octal bus transceiver with selectable direction control. This device is a great choice for applications where low power consumption, fast propagation delay and hot pluggable/dynamic bus environments are important. It offers several packaging configurations, low-power active/standby current, ESD rating and is available in both 5 and 3.3V versions.