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| DM74ALS533 Octal D-Type Transparent Latch with 3-STATE Outputs April 1984 Revised February 2000 DM74ALS533 Octal D-Type Transparent Latch with 3-STATE Outputs General Description These 8-bit registers feature totem-pole 3-STATE outputs designed specifically for driving highly-capacitive or relatively low-impedance loads. The high-impedance state and increased high-logic-level drive provide these registers with the capability of being connected directly to and driving the bus lines in a bus-organized system without need for interface or pull-up components. They are particularly attractive for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The eight inverting latches of the DM74ALS533 are transparent D-type latches. While the enable (G) is HIGH the Q outputs will follow the complement of the data (D) inputs. When the enable is taken LOW the output will be latched at the complement of the level of the data that was set up. A buffered output control input can be used to place the eight outputs in either a normal logic state (HIGH or LOW logic levels) or a high-impedance state. In the high-impedance state the outputs neither load nor drive the bus lines significantly. The output control does not affect the internal operation of the latches. That is, the old data can be retained or new data can be entered even while the outputs are OFF. Features s Switching specifications at 50 pF s Switching specifications guaranteed over full temperature and VCC range s Advanced oxide-isolated, ion-implanted Schottky TTL process s 3-STATE buffer-type outputs drive bus lines directly Ordering Code: Order Number DM74ALS533WM DM74ALS533N Package Number M20B N20A Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter "X" to the ordering code. Connection Diagram (c) 2000 Fairchild Semiconductor Corporation DS006222 www.fairchildsemi.com DM74ALS533 Function Table Output Control L L L H L = LOW State H = HIGH State X = Don't Care Z = High Impedance State Q0 = Previous Condition of Q Logic Diagram D H L X X Output Q L H Q0 Z Enable G H H L X www.fairchildsemi.com 2 DM74ALS533 Absolute Maximum Ratings(Note 1) Supply Voltage Input Voltage Voltage Applied to Disabled Output Operating Free Air Temperature Range Storage Temperature Range Typical JA N Package M Package 57.0C/W 76.0C/W 7V 7V 5.5V 0C to +70C -65C to +150C Note 1: 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 tables 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 tH TA Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Current LOW Level Output Current Width of Enable Pulse, HIGH or LOW Data Setup Time (Note 2) Data Hold Time (Note 2) Free Air Operating Temperature 15 15 7 0 70 Parameter Min 4.5 2 0.8 -2.6 24 Nom 5 Max 5.5 Units V V V mA mA ns ns ns C Note 2: The () arrow indicates the negative edge of the enable is used for reference. Electrical Characteristics over recommended operating free air temperature range. All typical values are measured at VCC = 5V, TA = 25C. Symbol VIK VOH VOL II IIH IIL IO IOZH IOZL ICC Parameter Input Clamp Voltage HIGH Level Output Voltage LOW Level Output Voltage Input Current @ Maximum Input Voltage HIGH Level Input Current LOW Level Input Current Output Drive Current OFF-State Output Current HIGH Level Voltage Applied OFF-State Output Current LOW Level Voltage Applied Supply Current VCC = 5.5V, VIH = 7V VCC = 5.5V, VIH = 2.7V VCC = 5.5V, VIL = 0.4V VCC = 5.5V VCC = 5.5V VO = 2.7V VCC = 5.5V VO = 0.4V VCC = 5.5V Outputs OPEN Outputs HIGH Outputs LOW Outputs Disabled 10 17 18.5 VO = 2.25V -30 VCC = 4.5V VCC = 4.5V to 5.5V VCC = 4.5V Conditions VCC = 4.5V, II = -18 mA IOH = -2.6 mA IOH = -400 A IOL = 12 mA IOL = 24 mA 2.4 VCC - 2 0.25 0.35 0.4 0.5 0.1 20 -0.1 -112 20 -20 17 26 28 3.3 Min Typ Max -1.5 Units V V V V V mA A mA mA A A mA mA mA 3 www.fairchildsemi.com DM74ALS533 Switching Characteristics over recommended operating free air temperature range Symbol tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ 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 Output Enable Time to HIGH Level Output Output Enable Time to LOW Level Output Output Disable Time from HIGH Level Output Output Disable Time from LOW Level Output Conditions VCC = 4.5V to 5.5V RL = 500 CL = 50 pF From Data To Any Q Min 4 Max 19 Units ns Data Any Q 4 13 ns Enable Any Q 5 23 ns Enable Output Control Output Control Output Control Output Control Any Q 4 18 ns Any Q 4 17 ns Any Q 4 18 ns Any Q 2 10 ns Any Q 3 16 ns www.fairchildsemi.com 4 DM74ALS533 Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide Package Number M20B 5 www.fairchildsemi.com DM74ALS533 Octal D-Type Transparent Latch with 3-STATE Outputs Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N20A Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD'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 FAIRCHILD 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 (c) 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. www.fairchildsemi.com 6 2. A critical component in 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. www.fairchildsemi.com |
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