9314FMQB

9314 DM9314 Quad Latch June 1989 9314 DM9314 Quad Latch General Description The ’9314 is a multifunctional 4-bit latch designed for general purpose storage applications in high speed digital systems All outputs have active pull-up circuitry to provide high capacitance drive and to provide low impedance in both logic states for good noise immunity Connection Diagram Dual-In-Line Package Logic Symbol TL F 9788 – 2 TL F 9788 – 1 VCC e Pin 16 GND e Pin 8 Order Number 9314DMQB 9314FMQB or DM9314N See NS Package Number J16A N16E or W16A Pin Names E D0–D3 S0 – S3 MR Q0–Q3 Description Enable Input (Active LOW) Data Inputs Set Inputs (Active LOW) Master Reset Input (Active LOW) Latch Outputs C1995 National Semiconductor Corporation TL F 9788 RRD-B30M115 Printed in U S A Absolute Maximum Ratings (Note) If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage Input Voltage Operating Free Air Temperature Range Military Commercial Storage Temperature Range 7V 5 5V b 55 C to a 125 C 0 C to a 70 C b 65 C to a 150 C Note The ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed The device should not be operated at these limits The parametric values defined in the ‘‘Electrical Characteristics’’ table are not guaranteed at the absolute maximum ratings The ‘‘Recommended Operating Conditions’’ table will define the conditions for actual device operation Recommended Operating Conditions Symbol VCC VIH VIL IOH IOL TA ts (H) ts (L) th (H) th (L) ts (H) th (L) tw (L) tw (L) trec Parameter Min Supply Voltage High Level Input Voltage Low Level Input Voltage High Level Output Current Low Level Output Current Free Air Operating Temperature Setup Time HIGH or LOW Dn to E Hold Time HIGH or LOW Dn to E Setup Time HIGH Dn to Sn Hold Time LOW Dn to Sn E Pulse Width LOW MR Pulse Width LOW Recovery Time MR to E b 55 Military Nom 5 Max 55 Min 4 75 2 08 b0 8 Commercial Nom 5 Max 5 25 Units V V 08 b0 8 45 2 V mA mA C ns ns ns ns ns ns ns 16 125 0 50 18 0 50 80 80 18 18 0 16 70 50 18 0 50 80 80 18 18 0 Electrical Characteristics Over recommended operating free air temperature range (unless otherwise noted) Symbol VI VOH VOL II IIH IIL IOS ICC Parameter Input Clamp Voltage High Level Output Voltage Low Level Output Voltage Input Current Input Voltage Max Conditions VCC e Min II e b 12 mA VCC e Min IOH e Max VIL e Max VCC e Min IOL e Max VIH e Min VCC e Min VI e 5 5V VCC e Max VI e 2 4V Data Inputs Low Level Input Current VCC e Max VI e 0 4V Data Inputs Short Circuit Output Current Supply Current VCC e Max (Note 2) VCC e Max MIL COM b 20 b 20 Min Typ (Note 1) Max b1 5 Units V V 24 34 02 04 1 40 60 b1 6 b2 7 b 70 b 70 V mA mA High Level Input Current mA mA mA 55 Note 1 All typicals are at VCC e 5V TA e 25 C Note 2 Not more than one output should be shorted at a time 2 Switching Characteristics VCC e a 5 0V Symbol tPLH tPHL tPLH tPHL tPLH tPHL Parameter TA e a 25 C (See Section 1 for waveforms and load configurations) CL e 15 pF Min Max 24 24 12 24 18 24 ns ns ns ns Units Propagation Delay E to Qn Propagation Delay Dn to Qn Propagation Delay MR to Qn Propagation Delay Sn to Qn Functional Description The ’9314 consists of four latches with a common active LOW Enable input and active LOW Master Reset input When the Enable goes HIGH data present in the latches is stored and the state of the latch is no longer affected by the Sn and Dn inputs The Master Reset when activated overrides all other input conditions forcing all latch outputs LOW Each of the four latches can be operated in one of two modes D-TYPE LATCH For D-type operation the S input of a latch is held LOW While the common Enable is active the latch output follows the D input Information present at the latch output is stored in the latch when the Enable goes HIGH SET RESET LATCH During set reset operation when the common Enable is LOW a latch is reset by a LOW on the D input and can be set by a LOW on the S input if the D input is HIGH If both S and D inputs are LOW the D input will dominate and the latch will be reset When the Enable goes HIGH the latch remains in the last state prior to disablement The two modes of latch operation are shown in the Truth Table Truth Table MR H H H H H H H H L E L L H L L L L H X D L H X L H L H X X S L L X L L H H X X Qn L H Qnb1 L H L Qnb1 Qnb1 L Reset R S Mode Operation D Mode H e HIGH Voltage Level L e LOW Voltage Level X e Immaterial Qnb1 e Previous Output State Qn e Present Output State 3 Logic Diagram TL F 9788 – 3 4 Physical Dimensions inches (millimeters) 16-Lead Ceramic Dual-In-Line Package (J) Order Number 9314DMQB NS Package Number J16A 16-Lead Molded Dual-In-Line Package (N) Order Number DM9314N NS Package Number N16E 5 9314 DM9314 Quad Latch Physical Dimensions inches (millimeters) (Continued) 16-Lead Ceramic Flat Package (W) Order Number 9314FMQB NS Package Number W16A LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or systems which (a) are intended for surgical implant into the body or (b) support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury to the user National Semiconductor Corporation 1111 West Bardin Road Arlington TX 76017 Tel 1(800) 272-9959 Fax 1(800) 737-7018 2 A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system or to affect its safety or effectiveness National Semiconductor Europe Fax (a49) 0-180-530 85 86 Email cnjwge tevm2 nsc com Deutsch Tel (a49) 0-180-530 85 85 English Tel (a49) 0-180-532 78 32 Fran ais Tel (a49) 0-180-532 93 58 Italiano Tel (a49) 0-180-534 16 80 National Semiconductor Hong Kong Ltd 13th Floor Straight Block Ocean Centre 5 Canton Rd Tsimshatsui Kowloon Hong Kong Tel (852) 2737-1600 Fax (852) 2736-9960 National Semiconductor Japan Ltd Tel 81-043-299-2309 Fax 81-043-299-2408 National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications