SN7438DR

These devices contain four independent 2-input NAND buffer gates with open-collector outputs. The open-collector outputs require pull-up resistors to perform correctly. They may be connected to other open-collector outputs to implement active-low wired-OR or active-high wired-AND functions. Open-collector devices are often used to generate high VoH leveis. The SN5438, SN54LS38, and SN54S38 are characterized for operation over the full temperature range of -55℃ to 125℃. The SN7438, SN74LS38, and SN74S38 are characterized for operation from 0℃ to 70℃

Key features

• Integrates four independent 2-input NAND buffer gates with open-collector outputs
• Output logic: Y = NOT(A·B) = NOT A + NOT B
• Multiple open-collector outputs can be wire-OR'd (active-low) or wire-AND'd (active-high)
• Capable of generating higher VOH output levels
• Open-collector outputs require pull-up resistors for proper operation
• 38-series: maximum input voltage 5.5V; LS38: maximum input voltage 7V
• SN54 series operating temperature range: -55℃ to 125℃
• SN74 series operating temperature range: 0℃ to 70℃
• Maximum supply voltage: 7V; maximum off-state output voltage: 7V
• Storage temperature range: -65℃ to 150℃