DM74ALS521N ,8-Bit ComparatorFeaturesThese comparators perform an “equal to” comparison of
DM74ALS520N-DM74ALS520WM-DM74ALS520WMX-DM74ALS521N-DM74ALS521WM-DM74ALS521WMX
8-Bit Comparator
DM74ALS520 • DM74ALS521 8-Bit Comparator September 1986 Revised April 2000 DM74ALS520 DM74ALS521 8-Bit Comparator General Description Features These comparators perform an “equal to” comparison ofSwitching specifications at 50 pF two 8-bit words with provision for expansion or externalSwitching specifications guaranteed over full tempera- enabling. The matching of the two 8-bit input plus a logic ture and V range CC LOW on the EN input produces the output A = B on the Advanced oxide-isolated, ion-implanted Schottky TTL DM74ALS520 and DM74ALS521. The DM74ALS520 and process DM74ALS521 have totem pole outputs for wire AND cas- Functionally and pin for pin compatible with LS family cading. Additionally, the DM74ALS520 is provided with B counterpart input pull up termination resistors for analog or switch data. Improved output transient handling capability Ordering Code: Ordering Code Package Number Package Description DM74ALS520WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide DM74ALS520N N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide DM74ALS521WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide SM74ALS521N N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Function Table Inputs Output EN Data A = B LA = BL LA ≠ BH HXH H = HIGH Logic Level L = LOW Logic Level X = Don't Care © 2000 DS006114
