DM7438

DM7438 FAIRCHILD | Alldatasheet

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© 2001 Fairchild Semiconductor Corporation DS006513 www.fairchildsemi.com September 1986 Revised July 2001 DM7438 • 7438 Quad 2-Input NAND Buffers with Open-Collector Outputs DM7438  7438 Quad 2-Input NAND Buffers with Open-Collector Outputs General Description This device contains four independent gates each of which performs the logic NAND function. The open-collector out- puts require external pull-up resistors for proper logical operation. Pull-Up Resistor Equations Where: N 1 (IOH ) = total maximum output high current for all outputs tied to pull-up resistor N 2 (IIH) = total maximum input high current for all inputs tied to pull-up resistor N 3 (IIL) = total maximum input low current for all inputs tied to pull-up resistor Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Function Table Y = AB H = HIGH Logic Level L = LOW Logic Level Order Number Package Number Package Description DM7438M M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow DM7438N N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide 7438SJ M14D 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Inputs Output ABY LLH LHH HLH HHL

www.fairchildsemi.com 2 DM7438  7438 Absolute Maximum Ratings(Note 1) 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

Electrical Characteristics

over recommended operating free air temperature range (unless otherwise noted) Switching Characteristics at VCC = 5V and TA = 25°C Note 2: All typicals are at VCC = 5V, TA = 25°C. Supply Voltage 7V Input Voltage 5.5V Output Voltage 7V Operating Free Air Temperature Range 0 °C to +70°C Storage Temperature Range −65°C to +150°C Symbol Parameter Min Nom Max Units VCC Supply Voltage 4.75 5 5.25 V VIH HIGH Level Input Voltage 2 V VIL LOW Level Input Voltage 0.8 V VOH HIGH Level Output Voltage 5.5 V IOL LOW Level Output Current 48 mA TA Free Air Operating Temperature 0 70 °C Symbol Parameter Conditions Min Typ Max Units (Note 2) VI Input Clamp Voltage V CC = Min, II = −12 mA −1.5 V ICEX HIGH Level V CC = Min, VO = 5.5V 250 µA Output Current V IL = Max VOL LOW Level V CC = Min, IOL = Max 0.4 V Output Voltage V IH = Min II Input Current @ Max Input Voltage V CC = Max, VI = 5.5V 1 mA IIH HIGH Level Input Current V CC = Max, VI = 2.4V 40 µA IIL LOW Level Input Current V CC = Max, VI = 0.4V −1.6 mA ICCH Supply Current with Outputs HIGH V CC = Max 5 8.5 mA ICCL Supply Current with Outputs LOW V CC = Max 34 54 mA Symbol Parameter Conditions Min Max Units tPLH Propagation Delay Time C L = 45 pF 22 ns LOW-to-HIGH Level Output R L = 133Ω tPHL Propagation Delay Time 18 ns HIGH-to-LOW Level Output

3 www.fairchildsemi.com DM7438  7438 Physical Dimensions inches (millimeters) unless otherwise noted 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow Package Number M14A

www.fairchildsemi.com 4 DM7438  7438 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M14D

5 www.fairchildsemi.com DM7438  7438 Quad 2-Input NAND Buffers with Open-Collector Outputs Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Package Number N14A 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 rea- sonably expected to result in a significant injury to the user. 2. A critical component in any component of a life support device or system whose failure to perform can be rea- sonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com