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| DM74AS1804 Hex 2-Input NAND Driver July 1985 Revised March 2000 DM74AS1804 Hex 2-Input NAND Driver General Description These devices contain six independent 2-Input drivers each of which performs the logic NAND function. The DM74AS1804 is equivalent to the DM74AS804B but the supply voltage and ground pins are centered in the package. This positioning of the supply voltage and ground pins reduce the lead inductance of these pins. This reduction of lead inductance will minimize noise generated onto either the supply voltage or ground bus which is significant in high current switching applications. 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 Centered VCC and GND configuration provides minimum lead inductance for high current switching applications s High capacitive drive capability Ordering Code: Order Number DM74AS1804WM DM74AS1804N 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 Function Table Y= A*B INPUTS A L L H H H = HIGH Logic Level L = LOW Logic Level OUTPUT B L H L H Y H H H L (c) 2000 Fairchild Semiconductor Corporation DS008619 www.fairchildsemi.com DM74AS1804 Absolute Maximum Ratings(Note 1) Supply Voltage Input Voltage Operating Free Air Temperature Storage Temperature Range Typical JA N Package M Package 58.3C/W 154.0C/W 7V 7V 0C to +70C -65C to +150C Note 1: The "Absolute Maximum Ratings" are those values beyond which the safety of the device can not 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 TA Supply Voltage HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Current LOW Level Output Current Operating Free Air Temperature Range 0 Parameter Min 4.5 2 0.8 -48 48 70 Nom 5 Max 5.5 Units V V V mA mA C Electrical Characteristics over recommended operating free air temperature range Symbol VIK VOH Parameter Input Clamp Voltage HIGH Level Output Voltage VOL II IIH IIL IO ICCH ICCL LOW Level Output Voltage Input Current at Maximum Input Voltage HIGH Level Input Current LOW Level Input Current Output Drive Current Supply Current with Outputs HIGH Supply Current with Outputs LOW Conditions VCC = 4.5V, II = -18 mA IOH = -2 mA, VCC = 4.5V to 5.5V IOH = -3 mA, VCC = 4.5V IOH = Max, VCC = 4.5V VCC = 4.5V, IOL = Max, VIH = 2V VCC = 5.5V, VI = 7V VCC = 5.5V, VI = 2.7V VCC = 5.5V, VI = 0.4V VCC = 5.5V, VO = 2.25V VCC = 5.5V VCC = 5.5V -50 -135 3.5 16 VCC -2 2.4 2 0.5 100 20 -500 -200 5 27 V A A A mA mA mA 3.2 V Min Typ Max -1.2 Units V Switching Characteristics over recommended operating free air temperature range Symbol tPLH tPHL Parameter Propagation Delay Time LOW-to-HIGH Level Output Propagation Delay Time HIGH-to-LOW Level Output RL = 500 CL = 50 pF Conditions VCC = 4.5V to 5.5V Min 1 1 Max 4 4 Units ns ns www.fairchildsemi.com 2 DM74AS1804 Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide Package Number M20B 3 www.fairchildsemi.com DM74AS1804 Hex 2-Input NAND Driver 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 4 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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