MC14557B. 1-to-64 Bit Variable Length Shift Register

Transcription

1 MC -to- it Variable Length Shift Register The MC is a static clocked serial shift register whose length may be programmed to be any number of bits between and. The number of bits selected is equal to the sum of the subscripts of the enabled Length Control inputs (L, L, L, L8, L, and L) plus one. Serial data may be selected from the or data inputs with the / select input. This feature is useful for recirculation purposes. Clock Enable (CE) input is provided to allow gating of the clock or negative edge clocking capability. The device can be effectively used for variable digital delay lines or simply to implement odd length shift registers. Features it Programmable Length and Serial uffered Outputs synchronous Master Reset ll Inputs uffered No Limit On Clock Rise and Fall Times Supply Voltage Range =. to 8 Capable of Driving Two Lowpower TTL Loads or one Lowpower Schottky TTL Load Over the Rated Temperature Range This Device is PbFree and is RoHS Compliant MXIMUM RTINGS (Voltages Referenced to ) Symbol Parameter Value Unit DC Supply Voltage Range. to +8. V V in, V out Input or Output Voltage Range (DC or Traient). to +. V I in, I out P D Input or Output Current (DC or Traient) per Pin Power Dissipation, per Package (Note ) ± m mw T mbient Temperature Range to + C T stg Storage Temperature Range to + C T L Lead Temperature (8Second Soldering) C Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected.. V in and V out should be cotrained to the range (V in or V out ). Unused inputs must always be tied to an appropriate logic voltage level (e.g., either or ). Unused outputs must be left open.. Temperature Derating: D/DW Package:. mw/ C From C To C MRKING DIGRM SOIC W DW SUFFIX CSE G = ssembly Location WL, L = Wafer Lot YY, Y = Year WW, W = Work Week G = PbFree Package PIN SSIGNMENT L L CE 8 WLYYWWG ORDERING INFORMTION See detailed ordering and shipping information in the package dimeio section on page of this data sheet. 9 L L8 L L / SEL Semiconductor Components Industries, LLC, July, Rev. 8 Publication Order Number: MC/D

2 MC CE / SELECT 9 IT L IT L IT L IT L 8 IT L8 IT IT L VDD= PIN VSS= PIN 8 Figure. Logic Diagram

3 MC 9 CE / SELECT L L L L8 L L = PIN = PIN 8 Figure. lock Diagram TRUTH TLE Inputs Output Rst / Clock CE X X X is the output of the first selected shift register stage. X = Don t Care LENGTH SELECT TRUTH TLE L L L8 L L L Register Length it its its its its its its its its its its its NOTE: Length equals the sum of the binary length control subscripts plus one.

4 MC ELECTRICL CHRCTERISTICS (Voltages Referenced to ) Symbol Characteristic V OL Output Voltage Level V in = or. C C C Min Max Min... Typ (Note ) Max Min Max Unit V OH Level. V in = or V IL Input Voltage Level (V O =. or. ) (V O = 9. or. ) (V O =. or. ) V IH (V O =. or. ) (V O =. or 9. ) (V O =. or. ) Level I OH Output Drive Current (V OH =. ) Source (V OH =. ) (V OH = 9. ) (V OH =. ) mdc I OL (V OL =. ) Sink (V OL =. ) (V OL =. ) I in Input Current ±. ±. ±. ±. dc C in Input Capacitance (V in = ).. pf I DD uiescent Current (Per Package) dc I T Total Supply Current (Notes, ) (Dynamic plus uiescent, Per Package) (C L = pf on all outputs, all buffers switching). I T = (. /khz) f + I DD I T = (. /khz) f + I DD I T = (. /khz) f + I DD Product parametric performance is indicated in the Electrical Characteristics for the listed test conditio, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditio.. Data labelled Typ is not to be used for design purposes but is intended as an indication of the IC s potential performance.. The formulas given are for the typical characteristics only at C.. To calculate total supply current at loads other than pf: I T (C L ) = I T ( pf) + (C L ) Vfk where: I T is in (per package), C L in pf, V = ( ) in volts, f in khz is input frequency, and k =.. dc

5 MC SWITCHING CHRCTERISTICS (Note ) (C L = pf, T = C) Symbol Characteristic Min t TLH, t THL t PLH, t PLH, Rise and Fall Time, or Output t TLH, t THL = (. /pf) C L + t TLH, t THL = (. /pf) C L +. t TLH, t THL = (. /pf) C L + 9. Propagation Delay, Clock or CE to or t PLH, = (. /pf) C L + t PLH, = (. /pf) C L + 9 t PLH, = (. /pf) C L + Propagation Delay, Reset to or t PLH, = (. /pf) C L + t PLH, = (. /pf) C L + 9 t PLH, = (. /pf) C L + t WH(cl) Pulse Width, Clock t WH(rst) Pulse Width, Reset f cl Clock Frequency (% Duty Cycle) t su t h Setup Time, or to Clock or CE Worst case condition: L = L = L = L8 = L = L = (Register Length = ) est case condition: L =, L through L = Don t Care (ny register length from to ) Hold Time, Clock or CE to or est case condition: L = L = L = L8 = L = L = (Register Length = ) Worst case condition: L =, L through L = Don t Care (ny register length from to ) t r, t f Rise and Fall Time, Clock t r, Rise and Fall Time, Reset or CE t f t rem Removal Time, Reset to Clock or CE Typ (Note ) Max Unit No Limit. The formulas given are for the typical characteristics only at C.. Data labelled Typ is not to be used for design purposes but is intended as an indication of the IC s potential performance MHz s

6 MC % t WH(cl) INPUT bit length: CE = / = L = L = L = L8 = L = L = /f cl % t su t PLH t h t TLH 9% % % t THL % t rem PW R V OH V OL Figure. Timing Diagram ORDERING INFORMTION MCDWRG MCDWG Device Package Shipping SOIC W (PbFree) SOIC W (PbFree) / Tape & Reel Units / Rail For information on tape and reel specificatio, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specificatio rochure, RD8/D.

7 MC PCKGE DIMENSIONS SOIC W CSE G ISSUE D 8X H. M M D 9 E h X NOTES:. DIMENSIONS RE IN MILLIMETERS.. INTERPRET DIMENSIONS ND TOLERNCES PER SME Y.M, 99.. DIMENSIONS D ND E DO NOT INLCUDE MOLD PROTRUSION.. MXIMUM MOLD PROTRUSION. PER SIDE.. DIMENSION DOES NOT INCLUDE DMR PROTRUSION. LLOWLE DMR PROTRUSION SHLL E. TOTL IN EXCESS OF THE DIMENSION T MXIMUM MTERIL CONDITION. 8 X. M T S S MILLIMETERS DIM MIN MX C.. D.. E.. e. SC H.. h.. L..9 q L X e T SETING PLNE C X.8 SOLDERING FOOTPRINT. X.. PITCH DIMENSIONS: MILLIMETERS ON Semiconductor and the are registered trademarks of Semiconductor Components Industries, LLC (SCILLC) or its subsidiaries in the United States and/or other countries. SCILLC ow the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. listing of SCILLC s product/patent coverage may be accessed at SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, coequential or incidental damages. Typical parameters which may be provided in SCILLC data sheets and/or specificatio can and do vary in different applicatio and actual performance may vary over time. ll operating parameters, including Typicals must be validated for each customer application by customer s technical experts. SCILLC does not convey any licee under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applicatio intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should uyer purchase or use SCILLC products for any such unintended or unauthorized application, uyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless agait all claims, costs, damages, and expees, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/ffirmative ction Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. PULICTION ORDERING INFORMTION LITERTURE FULFILLMENT: Literature Distribution Center for ON Semiconductor P.O. ox, Denver, Colorado 8 US Phone: or 88 Toll Free US/Canada Fax: or 88 Toll Free US/Canada orderlit@oemi.com N. merican Technical Support: 8898 Toll Free US/Canada Europe, Middle East and frica Technical Support: Phone: 9 9 Japan Customer Focus Center Phone: 88 ON Semiconductor Website: Order Literature: For additional information, please contact your local Sales Representative MC/D