SN74LS74AMEL LOW POWER SCHOTTKY

Transcription

1 The SN74S74A dual edge-triggered flip-flop utilizes Schottky TT circuitry to produce high speed D-type flip-flops. Each flip-flop has individual clear and set inputs, and also complementary Q and Q outputs. Information at input D is transferred to the Q output on the positive-going edge of the clock pulse. Clock triggering occurs at a voltage level of the clock pulse and is not directly related to the transition time of the positive-going pulse. When the clock input is at either the IG or the OW level, the D input signal has no effect. OW POWER SCOTTKY MODE SEECT TRUT TABE OPERATING MODE Set Reset (Clear) *Undetermined oad 1 (Set) oad 0 (Reset) INPUTS OUTPUTS S D C D D Q Q * Both outputs will be IG while both S D and C D are OW, but the output states are unpredictable if S D and C D go IG simultaneously. If the levels at the set and clear are near V I maximum then we cannot guarantee to meet the minimum level for V O., h = IG Voltage evel, I = OW Voltage evel X = Don t Care l, h (q) = ower case letters indicate the state of the referenced input i, h (q) = (or output) one set-up time prior to the IG to OW clock transition. X X X h l SOIC D SUFFIX CASE 751A 14 PASTIC N SUFFIX CASE SOEIAJ M SUFFIX CASE 965 GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit V CC Supply Voltage V T A Operating Ambient Temperature Range C I O Output Current igh 0.4 ma I O Output Current ow 8.0 ma ORDERING INFORMATION Device Package Shipping SN74S74AN 14 Pin DIP 2000 Units/Box SN74S74AD SOIC Units/Rail SN74S74ADR2 SOIC /Tape & Reel SN74S74AM SOEIAJ 14 See Note 1 SN74S74AME SOEIAJ 14 See Note 1 1. For ordering information on the EIAJ version of the SOIC package, please contact your local ON Semiconductor representative. Semiconductor Components Industries, C, 2002 April, 2002 Rev. 7 1 Publication Order Number: SN74S74A/D

2 SN74S74A OGIC DIAGRAM (Each Flip-Flop) OGIC SYMBO 2

3 SN74S74A DC CARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) imits Symbol Parameter Min Typ Max Unit Test Conditions V I Input IG Voltage 2.0 V V I Input OW Voltage 0.8 V Guaranteed Input IG Voltage for All Inputs Guaranteed Input OW Voltage for All Inputs V IK Input Clamp Diode Voltage V V CC = MIN, I IN = 18 ma V O Output IG Voltage V V CC = MIN, I O = MAX, V IN = V I or V I per Truth Table V O I I I I Output OW Voltage Input igh Current Data, Clock Set, Clear Data, Clock Set, Clear Input OW Current Data, Clock Set, Clear V I O = 4.0 ma V CC = V CC MIN, V IN = V I or V I V I O = 8.0 ma per Truth Table µa V CC = MAX, V IN = 2.7 V I OS Output Short Circuit Current (Note 2) ma V CC = MAX ma ma V CC = MAX, V IN = 7.0 V V CC = MAX, V IN = 0.4 V I CC Power Supply Current 8.0 ma V CC = MAX 2. Not more than one output should be shorted at a time, nor for more than 1 second. AC CARACTERISTICS (T A = 25 C, V CC = 5.0 V) imits Symbol Parameter Min Typ Max Unit Test Conditions f MAX Maximum Clock Frequency Mz Figure 1 V ns CC = 5.0 V t P Clock, Clear, Set to Output Figure 1 C =15pF t P ns AC SETUP REQUIREMENTS (T A = 25 C) imits Symbol Parameter Min Typ Max Unit Test Conditions t W() Clock 25 ns Figure 1 t W() Clear, Set 25 ns Figure 2 Data Setup Time IG 20 ns V CC = 5.0 V t s Figure 1 Data Setup Time OW 20 ns t h old Time 5.0 ns Figure 1 3

4 SN74S74A AC WAVEFORMS *The shaded areas indicate when the input is permitted to change for predictable output performance. Figure 1. Clock to Output Delays, Data Set-Up and old Times, Clock Pulse Width Figure 2. Set and Clear to Output Delays, Set and Clear Pulse Widths 4

5 SN74S74A PACKAGE DIMENSIONS N SUFFIX PASTIC PACKAGE CASE ISSUE M B T N A F C K J G D 14 P M 5

6 SN74S74A PACKAGE DIMENSIONS D SUFFIX PASTIC SOIC PACKAGE CASE 751A 03 ISSUE F A B P 7 P T G D 14 P K C R X 45 F M J 6

7 SN74S74A PACKAGE DIMENSIONS Z D e b E A E A 1 VIEW P M M SUFFIX SOEIAJ PACKAGE CASE ISSUE O E Q 1 DETAI P c 7

8 SN74S74A ON Semiconductor is a trademark and is a registered trademark of Semiconductor Components Industries, C (SCIC). SCIC reserves the right to make changes without further notice to any products herein. SCIC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCIC 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, consequential or incidental damages. Typical parameters which may be provided in SCIC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including Typicals must be validated for each customer application by customer s technical experts. SCIC does not convey any license under its patent rights nor the rights of others. SCIC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCIC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCIC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCIC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, 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 SCIC was negligent regarding the design or manufacture of the part. SCIC is an Equal Opportunity/Affirmative Action Employer. PUBICATION ORDERING INFORMATION iterature Fulfillment: iterature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado USA Phone: or Toll Free USA/Canada Fax: or Toll Free USA/Canada ONlit@hibbertco.com N. American Technical Support: Toll Free USA/Canada JAPAN: ON Semiconductor, Japan Customer Focus Center Nishi Gotanda, Shinagawa ku, Tokyo, Japan Phone: r14525@onsemi.com ON Semiconductor Website: For additional information, please contact your local Sales Representative. 8 SN74S74A/D