View HD74LS293_4697909.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

HD74LS293
4-bit Binary Counter
REJ03D0477-0300 Rev.3.00 Jul.15.2005 This counter contains four master-slave flip-flops and additional gating to provide a divide-by-two counter and divideby-eight counter. This counter has a gated zero reset. To use the maximum count length of this counter, the B input is connected to the QA output. The input count pulses are applied to input A and the outputs are as described in the appropriate function table.
Features
* Ordering Information
Part Name HD74LS293P Package Type DILP-14 pin Package Code (Previous Code) PRDP0014AB-B (DP-14AV) Package Abbreviation P Taping Abbreviation (Quantity) --
Pin Arrangement
NC NC NC QC Outputs QB NC GND
1 2 3 4 5 6 QD 7 QC QB R0(2) R0(1) B A QA
14 13 12 11 10 9 8
VCC R0(2) R0(1) B Inputs A QA Outputs QD
(Top view)
Function Table
Reset / Count
Reset Input R0 (1) H L X R0 (2) H X L QD L QC L Count Count Outputs QB L QA L
Rev.3.00, Jul.15.2005, page 1 of 7
HD74LS293 BCD Count Sequence
Count 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Outputs QD L L L L L L L L H H H H H H H H QC L L L L H H H H L L L L H H H H QB L L H H L L H H L L H H L L H H QA L H L H L H L H L H L H L H L H
Notes: 1. H; high level, L; low level, X; irrelevant 2. Output QA is connected to input B.
Block Diagram
J Input A CK K J Input B CK K Q QB Q QA
J CK K
Q
QC
J CK K
Q
QD
R0(1) R0(2)
Rev.3.00, Jul.15.2005, page 2 of 7
HD74LS293
Absolute Maximum Ratings
Item Supply voltage Input voltage Power dissipation Operating temperature Storage temperature RO Inputs A, B Inputs Symbol VCC VIN PT Topr Tstg Ratings 7 7 5.5 400 -20 to +75 -65 to +150 Unit V V V mW C C
Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
Recommended Operating Conditions
Item Supply voltage Output current Operating temperature Count frequency A input B input A input Pulse width B input Reset inputs Setup time tw Symbol VCC IOH IOL Topr count Min 4.75 -- -- -20 0 0 15 30 15 tsu 25 Typ 5.00 -- -- 25 -- -- -- -- -- -- Max 5.25 -400 8 75 32 16 -- -- -- -- ns ns Unit V A mA C MHz
Electrical Characteristics
(Ta = -20 to +75 C)
Item Input voltage Symbol VIH VIL VOH Output voltage VOL Any Reset A input B input Any Reset A input B input Any Reset A input min. 2.0 -- 2.7 -- -- -- -- -- -- -- -- -- -- typ.* -- -- -- -- -- -- -- -- -- -- -- -- -- max. -- 0.8 -- 0.4 0.5 20 40 40 -0.4 -2.4 -1.6 0.1 0.2 Unit V V V V Condition
VCC = 4.75 V, VIH = 2 V, VIL = 0.8 V, IOH = -400 A IOL = 4 mA** VCC = 4.75 V, VIH = 2 V, VIL = 0.8 V IOL = 8 mA** VCC = 5.25 V, VI = 2.7 V
IIH
A
Input current
IIL
mA
VCC = 5.25 V, VI = 0.4 V VI = 7 V
II
mA
-- -- 0.2 B input Short-circuit output current IOS -20 -- -100 mA VCC = 5.25 V Supply current*** ICC -- 9 15 mA VCC = 5.25 V Input clamp voltage VIK -- -- -1.5 V VCC = 4.75 V, IIN = -18 mA Notes: * VCC = 5 V, Ta = 25C ** QA output is tested at specified IOL plus the limit value of IIL for the B input. This permits driving the B input while maintaining full fan-out capability. *** ICC is measured with all outputs open, both R0 inputs grounded following momentary connection to 4.5 V, and all other inputs grounded.
VI = 5.5 V
VCC = 5.25 V
Rev.3.00, Jul.15.2005, page 3 of 7
HD74LS293
Switching Characteristics
(VCC = 5 V, Ta = 25C)
Item Maximum count frequency Symbol max tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL tPHL Inputs A B A A B B B Set-to-0 Outputs QA QB QA QD QB QC QD QA to QD min. 32 16 -- -- -- -- -- -- -- -- -- -- -- typ. 42 -- 10 12 46 46 10 14 21 23 34 34 26 max. -- -- 16 18 70 70 16 21 32 35 51 51 40 Unit MHz ns ns ns ns ns ns CL = 15 pF, RL = 2 k Condition
Propagation delay time
Timing Method
tw 3V R0 1.3 V 1.3 V 0V tsu 3V A or B Input 1.3 V tw 1.3 V 0V
Rev.3.00, Jul.15.2005, page 4 of 7
HD74LS293
Testing Method
Test Circuit
VCC 4.5V Load circuit 1 QA
RL QA A B P.G. Zout = 50 CL QB QB QC R0(1) R0(2) QC QD QD
See Testing Table
Same as Load Circuit 1. Same as Load Circuit 1. Same as Load Circuit 1.
Notes:
1. CL includes probe and jig capacitance. 2. All diodes are 1S2074(H).
Testing Table
Item From input to output Inputs A B R0 QA OUT -- OUT -- -- -- -- OUT QB OUT OUT -- -- OUT -- -- OUT Outputs QC OUT OUT -- -- -- OUT -- OUT QD OUT OUT -- OUT -- -- OUT OUT
AQ IN to QA GND max BQ 4.5V IN GND AQA IN to QA GND AQD IN to QA GND tPLH BQB 4.5V IN GND tPHL BQC 4.5V IN GND BQD 4.5V IN GND R0Q** IN* to QA IN Notes: * For initialized. ** Measured with each input and unused inputs at 4.5 V.
Rev.3.00, Jul.15.2005, page 5 of 7
HD74LS293 Waveforms 1 max, tPLH, tPHL, (ClockQ)
tTLH tTHL 3V Clock 10% 90% 90% 1.3 V 10% tPHL(Measure at tn+2) QA 1.3 V tPHL (Measure at tn+4) QB 1.3 V VOL tPLH (Measure at tn+2) VOH 1.3 V tPHL (Measure at tn+8) 1.3 V tPLH (Measure at tn+4) VOL 1.3 V 0V tPLH (Measure at tn+1) VOH
VOH QC 1.3 V 1.3 V VOL
tPHL (Measure at tn+16) tPLH (Measure at tn+8)
VOH QD 1.3 V 1.3 V VOL
Notes:
1. Clock input pulse; tTLH 15 ns, tTHL 6 ns, PRR = 1 MHz, duty cycle = 50% and : for max, tTLH = tTHL 2.5 ns. 2. tn is reference bit time when all outputs are low.
Waveforms 2 tPHL, (R0Q)
tTLH tTHL 3V 10% tw 15ns tPHL VOH QA to QD 1.3 V VOL 0V
90% 90% 1.3 V 1.3 V R0 10%
Note:
tTLH 15 ns, tTHL 5 ns
Rev.3.00, Jul.15.2005, page 6 of 7
HD74LS293
Package Dimensions
JEITA Package Code P-DIP14-6.3x19.2-2.54 RENESAS Code PRDP0014AB-B Previous Code DP-14AV MASS[Typ.] 0.97g
D
14
8
1 b3
7
Z
E
Reference Symbol
Dimension in Millimeters Min Nom 7.62 19.2 6.3 20.32 7.4 5.06 0.51 0.40 0.48 1.30 0.19 0 2.29 2.54 0.25 0.31 15 2.79 2.39 2.54 0.56 Max
A
A1
e1 D E
L
A A1 bp
e
bp
e1
c
b3 c
e Z
( Ni/Pd/Au plating )
L
Rev.3.00, Jul.15.2005, page 7 of 7
Sales Strategic Planning Div.
Keep safety first in your circuit designs!
Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan
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 to personal injury, fire or property damage. Remember to give due consideration to safety when making your circuit designs, with appropriate measures such as (i) placement of substitutive, auxiliary circuits, (ii) use of nonflammable material or (iii) prevention against any malfunction or mishap. Notes regarding these materials 1. These materials are intended as a reference to assist our customers in the selection of the Renesas Technology Corp. product best suited to the customer's application; they do not convey any license under any intellectual property rights, or any other rights, belonging to Renesas Technology Corp. or a third party. 2. Renesas Technology Corp. assumes no responsibility for any damage, or infringement of any third-party's rights, originating in the use of any product data, diagrams, charts, programs, algorithms, or circuit application examples contained in these materials. 3. All information contained in these materials, including product data, diagrams, charts, programs and algorithms represents information on products at the time of publication of these materials, and are subject to change by Renesas Technology Corp. without notice due to product improvements or other reasons. It is therefore recommended that customers contact Renesas Technology Corp. or an authorized Renesas Technology Corp. product distributor for the latest product information before purchasing a product listed herein. The information described here may contain technical inaccuracies or typographical errors. Renesas Technology Corp. assumes no responsibility for any damage, liability, or other loss rising from these inaccuracies or errors. Please also pay attention to information published by Renesas Technology Corp. by various means, including the Renesas Technology Corp. Semiconductor home page (http://www.renesas.com). 4. When using any or all of the information contained in these materials, including product data, diagrams, charts, programs, and algorithms, please be sure to evaluate all information as a total system before making a final decision on the applicability of the information and products. Renesas Technology Corp. assumes no responsibility for any damage, liability or other loss resulting from the information contained herein. 5. Renesas Technology Corp. semiconductors are not designed or manufactured for use in a device or system that is used under circumstances in which human life is potentially at stake. Please contact Renesas Technology Corp. or an authorized Renesas Technology Corp. product distributor when considering the use of a product contained herein for any specific purposes, such as apparatus or systems for transportation, vehicular, medical, aerospace, nuclear, or undersea repeater use. 6. The prior written approval of Renesas Technology Corp. is necessary to reprint or reproduce in whole or in part these materials. 7. If these products or technologies are subject to the Japanese export control restrictions, they must be exported under a license from the Japanese government and cannot be imported into a country other than the approved destination. Any diversion or reexport contrary to the export control laws and regulations of Japan and/or the country of destination is prohibited. 8. Please contact Renesas Technology Corp. for further details on these materials or the products contained therein.
RENESAS SALES OFFICES
Refer to "http://www.renesas.com/en/network" for the latest and detailed information. Renesas Technology America, Inc. 450 Holger Way, San Jose, CA 95134-1368, U.S.A Tel: <1> (408) 382-7500, Fax: <1> (408) 382-7501 Renesas Technology Europe Limited Dukes Meadow, Millboard Road, Bourne End, Buckinghamshire, SL8 5FH, U.K. Tel: <44> (1628) 585-100, Fax: <44> (1628) 585-900 Renesas Technology Hong Kong Ltd. 7th Floor, North Tower, World Finance Centre, Harbour City, 1 Canton Road, Tsimshatsui, Kowloon, Hong Kong Tel: <852> 2265-6688, Fax: <852> 2730-6071 Renesas Technology Taiwan Co., Ltd. 10th Floor, No.99, Fushing North Road, Taipei, Taiwan Tel: <886> (2) 2715-2888, Fax: <886> (2) 2713-2999 Renesas Technology (Shanghai) Co., Ltd. Unit2607 Ruijing Building, No.205 Maoming Road (S), Shanghai 200020, China Tel: <86> (21) 6472-1001, Fax: <86> (21) 6415-2952 Renesas Technology Singapore Pte. Ltd. 1 Harbour Front Avenue, #06-10, Keppel Bay Tower, Singapore 098632 Tel: <65> 6213-0200, Fax: <65> 6278-8001 Renesas Technology Korea Co., Ltd. Kukje Center Bldg. 18th Fl., 191, 2-ka, Hangang-ro, Yongsan-ku, Seoul 140-702, Korea Tel: <82> 2-796-3115, Fax: <82> 2-796-2145
http://www.renesas.com
Renesas Technology Malaysia Sdn. Bhd. Unit 906, Block B, Menara Amcorp, Amcorp Trade Centre, No.18, Jalan Persiaran Barat, 46050 Petaling Jaya, Selangor Darul Ehsan, Malaysia Tel: <603> 7955-9390, Fax: <603> 7955-9510
(c) 2005. Renesas Technology Corp., All rights reserved. Printed in Japan.
Colophon .3.0

▲Up To Search▲

Price & Availability of HD74LS293

	To Download HD74LS293 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .