SN74ALS520 - Texas Instruments

SN74ALS520 8-BIT IDENTITY COMPARATORS

These identity comparators perform comparisons on two 8-bit binary or BCD words. The SN74ALS518 provides P = Q outputs, while the ′ALS520 and SN74ALS521 provide P = Q outputs. The SN74ALS518 has an open-collector output. The SN74ALS518 and ′ALS520 feature 20-kΩ pullup resistors on the Q inputs for analog or switch data. The SN54ALS520 is characterized for o.

Features

to 125°C. The SN74ALS518, SN74ALS520, and SN74ALS521 are characterized for operation from 0°C to 70°C. Q3 GND P4 Q4 P5 SDAS224B
  – JUNE 1982
  – REVISED NOVEMBER 1995 SN54ALS520 . . . J PACKAGE SN74ALS518, SN74ALS520, SN74ALS521 . . . DW OR N PACKAGE (TOP VIEW) G P0 Q0 P1 Q1 P2 Q2 P3 Q3 GND 1 2 3 4 5 6 7 8 9 10 20 VCC 19 P = Q / P = Q† 18 Q7 17 P7 16 Q6 15 P6 14 Q5 13 P5 12 Q4 11 P4 † P = Q for SN74ALS518 P = Q for ′ALS520 and SN74ALS521 SN54ALS520 . . . FK PACKAGE (TOP VIEW) Q0 P0 G VCC P=Q P1 3 2 1 20 19 4 18 Q7 Q1 5 17 P7 P2 6 16 Q6 Q2 7 15 P6 P3 8 14 Q5 9 10 11 12 13 FUNC.