What this 74LVCH buffer does on the bus
The Texas Instruments SN74LVCH244ADBR is a non-inverting buffer with 3-state outputs from the 74LVCH family, packaged in a 20-SSOP. It contains two independent 4-bit elements, each with its own output-enable control, making it a straightforward choice for isolating or re-driving address/data buses, control lines, or general-purpose logic signals in mixed-voltage systems. The supply range from 1.65 V to 3.6 V covers 1.8 V, 2.5 V, and 3.3 V logic rails without a level translator, and the 24 mA symmetric drive at both high and low levels handles standard fan-out for CMOS or TTL-compatible loads.
Supply range and output drive — what they mean for the BOM
The 1.65 V to 3.6 V supply window is the headline feature: it lets this single part sit on a 3.3 V backplane while also buffering a 1.8 V sensor or 2.5 V memory interface, without needing a separate translator. The 24 mA output current per pin is enough to drive a standard logic load or a low-current LED, but not a relay coil or high-capacitance bus — stay within the package's total current limit when all eight outputs switch simultaneously. For higher fan-out or longer traces, consider a buffer with stronger drive or add a line driver stage.
Package and temperature grade
Housed in a 20-SSOP (5.30 mm body width), the SN74LVCH244ADBR is a surface-mount part suited for automated assembly. The industrial temperature range of -40°C to 85°C covers most factory-floor, outdoor telecom, and commercial equipment environments, but not extended automotive under-hood or downhole applications — those would need the -40°C to 125°C grade found in some 74LVCH siblings. ROHS3 compliant per the listing.
Lifecycle and sourcing reality
The SN74LVCH244ADBR carries an Active product status, meaning TI continues to manufacture it and there is no announced last-time-buy or end-of-life notice. This is a standard-production part with no unusual supply pressure.