74ACQ245SJX

Logic - Buffers, Drivers, Receivers, Transceivers

74ACQ245SJX is an octal bi-directional buffer with TRI-STATE outputs with 3-state outputs, allowing it to be used as both a line driver and a bus receiver. TTL to CMOS, 3.3V to 5V-level translation are supported, making it ideal for bridging mixed voltage level systems or device. This device is designed to be used between buses or lines to match TTL, LVTTL, LVCMOS and DVCC levels. The 74ACQ245SJX offers flow-through pinouts, which minimize the use of external components when looping a signal. It is a nominal 5V powered device, with a specified temperature range of -40°C to 85°C.

Application Fields

• 3.3V to 5V-level translation
• Bus interfacing between TTL, LVTTL, LVCMOS and DVCC
• TTL to CMOS
• Parental and sequential logic circuitry

Working Principle

The 74ACQ245SJX is an octal, 3-state buffer IC with tri-state outputs that can be employed as both line drivers and bus receivers. It has two independent output enables (OEs) that allow it to control the and direction of data flow independently for each of them. The two OEs can be connected to the same control signal, if desired. When the OEs are enabled, the TRI-STATE buffers are placed in an “active” state and the tri-stated devices can drive or receive data. The OEs have an active high input and an open-drain output. When ENA or ENB is high, the corresponding devices are turned on, while when low, they are turned off.The 74ACQ245SJX is a 5V powered device with an operating temperature range of -40°C to 85°C. It has flow-through pinouts that minimize the use of external components when looping a signal. This makes it ideal for bridging mixed voltage-level systems or devices. It is available in SPACE, SOIC, SSOP, and TQFP packages depending on customer preference.

Conclusion

The 74ACQ245SJX is an octal, 3-state buffer IC with tri-state outputs that can be employed as both line drivers and bus receivers. It supports 3.3V to 5V-level translation and can be used as an interface between TTL, LVTTL, LVCMOS and DVCC levels. It has two independent output enables that can be connected to the same control signal, allowing it to control the flow of data both ways. The flow-through pinouts minimize external component use and make it perfect for bridging mixed voltage-level systems or devices.