Model No: SN54LS244J

Texas Instruments SN54LS244J

Manufacturer: Texas Instruments
SEMICON NO.: SN54LS244J
Package: 20-CDIP
Stock: In stock
Description: Buffer Non-Inverting 2-input 3-State Outputs
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 Mfr Texas Instruments
 Product Series  54LS 
 Device Type Octal Buffer/Line Driver with 3-State Outputs 
 Logic Function Buffer, Line Driver (Non-Inverting)    
 Number of Channels/Bits 8
 Output Type 3-State 
 Input Type  Schmitt Trigger 
 Propagation Delay (tpd) 15 ns - 18 ns
 Output Drive Capability ±12 mA
 Supply Voltage (Vcc) 4.5V to 5.5V    
 Operating Temperature -55°C to +125°C
 Package 20-CDIP
 Mounting Type Surface Mount
 Compliance    
 RoHS Compliant
SN54LS244Joctal buffer
The SN54LS244J is a military-grade octal buffer and line driver from Texas Instruments, featuring eight independent non-inverting channels with 3-state outputs housed in a robust 20-pin Ceramic Dual In-line Package (CDIP). Designed specifically to improve both performance and density of three-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters, this device operates within a 4.5V to 5.5V supply voltage range and is characterized for extreme military temperature operation from -55°C to +125°C. The LS244 variant provides non-inverting logic with two active-low output-enable inputs (1G and 2G) controlling four buffers each, enabling flexible bus management and memory addressing in high-reliability applications. With maximum propagation delay of 15ns at 5V and the ability to drive terminated lines down to 133Ω, this bipolar TTL device delivers exceptional performance for demanding aerospace, defense, and industrial control systems.
SN54LS244J LS244 buffer Performance
The SN54LS244J delivers high-speed performance with typical propagation delays of 9ns (low-to-high) and 12ns (high-to-low) under standard test conditions, making it suitable for high-frequency applications up to the maximum rated switching speeds. The buffer incorporates advanced input tolerance down to 2V, ensuring compatibility with 3.3V or 2.5V logic levels for seamless interfacing with modern mixed-voltage systems. Power consumption is optimized for bipolar LS technology with maximum supply current of 46mA, while the outputs can sink 24mA or source 15mA to drive LEDs, relays, or other high-current loads directly. 
Alternative non-inverting buffer IC Parts
● SN74LS244N: Commercial-grade version with identical electrical characteristics and pinout, operating from 0°C to 70°C for cost-sensitive industrial and consumer applications.
● DM54LS244J: National Semiconductor's military-grade equivalent offering drop-in replacement compatibility with identical 3-state octal buffer functionality and temperature ratings. 
● MC74LS244N: Motorola's commercial variant providing similar non-inverting buffer performance with established supply chain availability for high-volume production. 
● SN54LS240J: Inverting counterpart in the same military-grade CDIP package, providing identical electrical specs with inverted output polarity for flexible system design options. 
● SN54LS241J: Alternative configuration featuring complementary output-control inputs (G and Ḡ) instead of dual active-low enables, suitable for applications requiring single enable control.