HD74LS221RPEL Renesas Electronics America, HD74LS221RPEL Datasheet
HD74LS221RPEL
Specifications of HD74LS221RPEL
Related parts for HD74LS221RPEL
HD74LS221RPEL Summary of contents
Page 1
To our customers, Old Company Name in Catalogs and Other Documents st On April 1 , 2010, NEC Electronics Corporation merged with Renesas Technology Corporation, and Renesas Electronics Corporation took over all the business of both companies. Therefore, although the ...
Page 2
All information included in this document is current as of the date this document is issued. Such information, however, is subject to change without any prior notice. Before purchasing or using any Renesas Electronics products listed herein, please confirm ...
Page 3
... Features Ordering Information Part Name Package Type HD74LS221P DILP-16 pin HD74LS221RPEL SOP-16 pin (JEDEC) Note: Please consult the sales office for the above package availability. Rev.3.00, Jul.15.2005, page noise of typically 1 also provided by internal latching circuitry. Once CC range for more than six decades of timing capacitance (10 pF ...
Page 4
HD74LS221 Pin Arrangement 1CLR 2 Cext 2 Rext/Cext GND Function Table Inputs Clear Notes: H; high level, L; low level, X; irrelevant. ; Transition from high to low level. ...
Page 5
HD74LS221 Absolute Maximum Ratings Item Supply voltage Input voltage Power dissipation Storage temperature Note: Voltage value, unless otherwise noted, are with respect to network ground terminal. Recommended Operating Conditions Item Supply voltage Output current Operating temperature Schmitt input, B Rate ...
Page 6
HD74LS221 Switching Characteristics Item Symbol Inputs A t PLH B A Propagation t PHL delay time B t Clear PHL t Clear PLH Output pulse (out) width Caution in use In order to prevent any ...
Page 7
HD74LS221 Waveforms 1 Trigger from B, then clear (A input is low). t TLH 90% B Input 1.3V 10% CLR t PLH Q t PHL Q Note: Input pulse ns, t TLH Waveforms 2 Trigger from A, then ...
Page 8
HD74LS221 Waveforms 3 Trigger from B, then clear (A input is low). t TLH 90% B Input 1.3V 10% CLR Q Note: Input pulse ns, t TLH Waveforms 4 Trigger from A (B and clear input are high). ...
Page 9
HD74LS221 Waveforms 5 Clear overriding B, then trigger from B. t TLH B Input ≥ 50ns CLR 1.3V Triggered Q Not Triggered Note: Input pulse ns, t TLH Waveforms 6 Positive transition of Clear. B Input ≥ 50ns ...
Page 10
HD74LS221 Package Dimensions JEITA Package Code RENESAS Code P-DIP16-6.3x19.2-2.54 PRDP0016AE 0. JEITA Package Code RENESAS Code P-SOP16-3.95x9.9-1.27 PRSP0016DG Index mark Rev.3.00, Jul.15.2005, page Previous Code MASS[Typ.] ...
Page 11
Keep safety first in your circuit designs! 1. Renesas Technology Corp. puts the maximum effort into making semiconductor products better and more reliable, but there is always the possibility that trouble may occur with them. Trouble with semiconductors may lead ...