74AS21

DM74AS21 FAIRCHILD | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 4

Technical content

Features

■ Switching specifications at 50 pF ■ Switching specifications guaranteed over full temperature and VCC range ■ Advanced oxide-isolated, ion-implanted Schottky TTL process ■ Functionally and pin for pin compatible with Schottky, low power Schottky, and advanced low power Schottky TTL counterpart ■ Improved AC performance over Schottky, low power Schottky and advanced low power Schottky counter- parts Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Connection Diagram Function Table H = HIGH Logic Level L = LOW Logic Level X = Either LOW or HIGH Logic Level Order Number Package Number Package Description DM74AS21M M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow DM74AS21N N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Inputs Output ABCD Y HHHH H LXXX L XLXX L XXLX L XXXL L

www.fairchildsemi.com 2 DM74AS21 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. All typical values are measured at VCC = 5V, TA = 25°C. Switching Characteristics over recommended operating free air temperature range Supply Voltage 7V Input Voltage 7V Operating Free Air Temperature Range 0°C to +70°C Storage Temperature Range −65°C to +150°C Typical θ JA N Package 84.0 °C/W M Package 114.0 °C/W Symbol Parameter Min Nom Max Units VCC Supply Voltage 4.5 5 5.5 V VIH HIGH Level Input Voltage 2 V VIL LOW Level Input Voltage 0.8 V IOH HIGH Level Output Current −2m A IOL LOW Level Output Current 20 mA TA Free Air Operating Temperature 0 70 °C Symbol Parameter Conditions Min Typ Max Units VIK Input Clamp Voltage V CC = 4.5V, II = −18 mA −1.2 V VOH HIGH Level I OH = −2 mA, VCC − 2V Output Voltage V CC = 4.5V to 5.5V VOL LOW Level V CC = 4.5V 0.35 0.5 V Output Voltage I OL = 20 mA II Input Current @ Max Input Voltage VCC = 5.5V, VIH = 7V 0.1 mA IIH HIGH Level Input Current V CC = 5.5V, VIH = 2.7V 20 µA IIL LOW Level Input Current V CC = 5.5V, VIL = 0.4V −0.5 mA IO Output Drive Current V CC = 5.5V, VO = 2.25V −30 −112 mA ICC Supply Current V CC = 5.5V Outputs HIGH 2.9 4.6 mA Outputs LOW 7.4 12 mA Symbol Parameter Conditions Min Max Units tPLH Propagation Delay Time V CC = 4.5V to 5.5V 16 n s LOW-to-HIGH Level Output R L = 500Ω tPHL Propagation Delay Time C L = 50 pF 16 n s HIGH-to-LOW Level Output

3 www.fairchildsemi.com DM74AS21 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 DM74AS21 Dual 4-Input AND Gate 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