74244.md

74244: octal buffer

• Type: buffer
• Number of elements: 2
• Inputs per element: 4
• Outputs per element: 4
• Bits: 2x4
• DIP: 20-pin

Description

Provides two 4-bit buffers with a tri-state output.

Inputs and outputs

Label	Description	Signal
OEA	output enable for first buffer	active low
OEB	output enable for second buffer	active low
An	input of first buffer	active high
Qn	output of first buffer	active high
Bn	input of second buffer	active high
Rn	output of second buffer	active high

Function table

OEA	An	Qn
L	L	L
L	H	H
H	X	Z

OEB	Bn	Rn
L	L	L
L	H	H
H	X	Z

• H: HIGH voltage level
• L: LOW voltage level
• X: don't care
• Z: high-impedance OFF-state

Pin layout

Datasheets

TODO