Revised March 2000 DM74LS75 Quad Latch General Description These latches are ideally suited for use as temporary storage for binary information between processing units and input/output or indicator units. Information present at a data (D) input is transferred to the Q output when the enable is HIGH, and the Q output will follow the data input as long as the enable remains HIGH. When the enable goes LOW, the information (that was present at the data input at the time the transition occurred) is retained at the Q output until the enable is permitted to go HIGH. These latches feature complementary Q and Q outputs from a 4-bit latch, and are available in 16-pin packages. Ordering Code: Order Number Package Number Package Description DM74LS75M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow DM74LS75N N16E 16-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. Logic Diagram Connection Diagram (Each Latch) Function Table (Each Latch) Inputs Outputs D Enable Q Q L H L H H H H L X L Q0 Q0 H = HIGH Level L = LOW Level X = Don't Care Q0 = The Level of Q Before the HIGH-to-LOW Transition of ENABLE © 2000 Fairchild Semiconductor Corporation DS006374 www.fairchildsemi.com DM74LS75 Quad Latch August 1986 DM74LS75 Absolute Maximum Ratings(Note 1) Supply Voltage 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. 7V Input Voltage 7V 0°C to +70°C Operating Free Air Temperature Range −65°C to +150°C Storage Temperature Range Recommended Operating Conditions Symbol Parameter Min Nom Max 4.75 5 5.25 Units VCC Supply Voltage VIH HIGH Level Input Voltage V VIL LOW Level Input Voltage 0.8 V IOH HIGH Level Output Current −0.4 mA 8 mA 2 V IOL LOW Level Output Current tW Enable Pulse Width (Note 5) 20 ns tSU Setup Time (Note 5) 20 ns tH Hold Time (Note 5) 0 TA Free Air Operating Temperature 0 ns °C 70 Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Symbol Parameter Conditions VI Input Clamp Voltage VCC = Min, II = −18 mA VOH HIGH Level VCC = Min, IOH = Max VOL Output Voltage VIL = Max, VIH = Min LOW Level VCC = Min, IOL = Max Output Voltage Min 2.7 VIL = Max, VIH = Min IOL = 4 mA, VCC = Min II Input Current @ Max VCC = Max, VI = 7V Input Voltage IIH HIGH Level Input VCC = Max, VI = 2.7V Current IIL LOW Level Input VCC = Max, VI = 0.4V Current IOS Short Circuit Output Current VCC = Max (Note 2) ICC Supply Current VCC = Max (Note 3) V V 0.5 0.25 0.4 0.1 Enable 0.4 D 20 Enable 80 D −0.4 Enable −1.6 Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second. 2 −1.5 0.35 6.3 Note 4: ICC is measured with all outputs open and all inputs grounded. Units 3.5 −20 Note 5: TA = 25°C and V CC = 5V. Max D Note 2: All typicals are at VCC = 5V, TA = 25°C. www.fairchildsemi.com Typ (Note 2) V mA µA mA −100 mA 12 mA at VCC = 5V and TA = 25°C RL = 2 kΩ From (Input) Symbol Parameter CL = 15 pF To (Output) Min tPLH Propagation Delay Time LOW-to-HIGH Level Output tPHL Propagation Delay Time HIGH-to-LOW Level Output tPLH Propagation Delay Time LOW-to-HIGH Level Output tPHL Propagation Delay Time HIGH-to-LOW Level Output tPLH Propagation Delay Time LOW-to-HIGH Level Output tPHL Propagation Delay Time HIGH-to-LOW Level Output tPLH Propagation Delay Time LOW-to-HIGH Level Output tPHL Propagation Delay Time HIGH-to-LOW Level Output Max CL = 50 pF Min Units Max D to Q 27 30 ns D to Q 17 25 ns D to Q 20 25 ns D to Q 15 20 ns Enable to Q 27 30 ns Enable to Q 25 30 ns Enable to Q 30 30 ns Enable to Q 15 20 ns 3 www.fairchildsemi.com DM74LS75 Switching Characteristics DM74LS75 Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow Package Number M16A www.fairchildsemi.com 4 DM74LS75 Quad Latch Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N16E 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: 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. 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 5 www.fairchildsemi.com