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| 9334 DM9334 8-Bit Addressable Latch June 1989 9334 DM9334 8-Bit Addressable Latch General Description The DM9334 is a high speed 8-bit Addressable Latch designed for general purpose storage applications in digital systems It is a multifunctional device capable of storing single line data in eight addressable latches and being a oneof-eight decoder and demultiplexer with active level high outputs The device also incorporates an active level low common clear for resetting all latches as well as an active level low enable The DM9334 has four modes of operation which are shown in the mode selection table In the addressable latch mode data on the data line (D) is written into the addressed latch The addressed latch will follow the data input with all nonaddressed latches remaining in their previous states In the memory mode all latches remain in their previous state and are unaffected by the data or address inputs In the one-of-eight decoding or demultiplexing mode the addressed output will follow the state of the D input with all other inputs in the low state In the clear mode all outputs are low and unaffected by the address and data inputs When operating the device as an addressable latch changing more than one bit of the address could impose a transient wrong address Therefore this should only be done while in the memory mode The function tables summarize the operation of the product Features Y Y Y Y Y Y Y Common clear Easily expandable Random (addressable) data entry Serial to parallel capability 8 bits of storage output of each bit available Active high demultiplexing decoding capability Alternate Military Aerospace device (9334) is available Contact a National Semiconductor Sales Office Distributor for specifications Connection Diagram Dual-In-Line Package TL F 6609 - 1 Order Number 9334DMQB 9334FMQB DM9334J or DM9334N See NS Package Number J16A N16E or W16A C1995 National Semiconductor Corporation TL F 6609 RRD-B30M105 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 7V Input Voltage 5 5V Operating Free Air Temperature Range b 55 C to a 125 C Military Commercial 0 to a 70 C Storage Temperature Range 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 tW tSU Parameter Min Supply Voltage High Level Input Voltage Low Level Input Voltage High Level Output Current Low Level Output Current ENABLE Pulse Width (Fig 1) (Note 4) Setup Time (Note 4) Data 1 (Fig 4) Data 0 (Fig 4) Address (Fig 6) (Note 1) tH TA Hold Time (Note 4) Data 1 (Fig 4) Data 0 (Fig 4) 19 20 20 10 0 0 b 55 Military Nom 5 Max 55 08 b0 8 Commercial Min 4 75 2 08 b0 8 Units Max 5 25 V V V mA mA ns Nom 5 45 2 16 13 13 14 5 b 10 b 13 16 19 20 20 10 0 0 13 13 14 5 b 10 b 13 ns ns 70 C Free Air Operating Temperature 125 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 b12 mA VCC e Min IOH e Max VIL e Max VIH e Min VCC e Min IOL e Max VIH e Min VIL e Max VCC e Max VI e 5 5V VCC e Max VI e 2 4V VCC e Max VI e 0 4V VCC e Max (Note 3) VCC e Max E Input Others E Input Others MIL COM b 30 b 30 Min Typ (Note 2) Max b1 5 Units V V 24 36 02 04 1 60 40 b2 4 b1 6 b 100 b 100 V mA mA High Level Input Current Low Level Input Current Short Circuit Output Current Supply Current mA mA mA 56 86 Note 1 The ADDRESS setup time is the time before the negative ENABLE transition that the ADDRESS must be stable so that the correct latch is addressed without affecting the other latches Note 2 All typicals are at VCC e 5V TA e 25 C Note 3 Not more than one output should be shorted at a time and the duration should not exceed one second Note 4 TA e 25 C and VCC e 5V 2 Switching Characteristics at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load) Symbol tPLH tPHL tPLH tPHL tPLH tPHL tPHL Parameter Propagation Delay Time Low to High Level Output Propagation Delay Time High to Low Level Output Propagation Delay Time Low to High Level Output Propagation Delay Time High to Low Level Output Propagation Delay Time Low to High Level Output Propagation Delay Time High to Low Level Output Propagation Delay Time High to Low Level Output From (Input) To (Output) Enable to Output Fig 1 Enable to Output Fig 1 Data to Output Fig 2 Data to Output Fig 2 Address to Output Fig 3 Address to Output Fig 3 Clear to Output Fig 5 RL e 400X CL e 15 pF Min Max 28 27 35 28 35 35 31 ns ns ns ns ns ns ns Units Function Tables E L H L H Inputs C L L L L L E H L L L L D X L H L H A0 X L L H H A1 X L L L L A2 X L L L L Q0 L L H L L Q1 L L L L H C H H L L Mode Addressable Latch Memory Active High Eight Channel Demultiplexer Clear Present Output States Q2 L L L L L Q3 L L L L L Q4 L L L L L Q5 L L L L L Q6 L L L L L Q7 L L L L L Demultiplex Clear Mode L H H H H H L H L L L L H X L H L H H X L L H H H X L L L L H X L L L L L QN b 1 L H QN b 1 QN b 1 QN b 1 QN b 1 L H QNb1 QNb1 QN b 1 QN b 1 L L L L L L H Memory QN b 1 H H L L L H H H H H H H QN b 1 QN b 1 QNb1 QNb1 L H Addressable Latch X e Don't Care Condition L e Low Voltage Level H e High Voltage Level QNb1 e Previous Output State 3 Logic Diagram 9334 TL F 6609 - 2 Switching Time Waveforms TL F 6609 - 4 Other Conditions E e L C e H A e Stable Figure 2 TL F 6609 - 3 Other Conditions C e H A e Stable Figure 1 TL F 6609 - 5 TL F 6609 - 6 Other Conditions E e L C e L D e H Other Conditions C e H A e Stable Figure 3 Figure 4 TL F 6609 - 7 TL F 6609 - 8 Other Conditons E e H Other Conditions C e H Figure 5 Note The shaded areas indicate when the inputs are permitted to change for predictable output performance Figure 6 4 Physical Dimensions inches (millimeters) 16-Lead Ceramic Dual-In-Line Package (J) Order Number 9334DMQB or DM9334J NS Package Number J16A 16-Lead Molded Dual-In-Line Package (N) Order Number DM9334N NS Package Number N16E 5 9334 DM9334 8-Bit Addressable Latch Physical Dimensions inches (millimeters) (Continued) 16-Lead Ceramic Flat Package (W) Order Number 9334FMQB 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 |
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