Download the SN74LS91 datasheet PDF.
This datasheet also includes the SN7491A variant, as both parts are published together in a single manufacturer document.
SN5491A, SN54LS91, SN7491A, SN74LS91 8-BIT SHIFT REGISTERS
SDLS126 – MARCH 1974 – REVISED MARCH 1988 PRODUCTION DATA information is current as of publication date.
