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CD74HC21 Datasheet(PDF) 1 Page - Texas Instruments |
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CD74HC21 Datasheet(HTML) 1 Page - Texas Instruments |
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1 Data sheet acquired from Harris Semiconductor SCHS131 Features • Buffered Inputs • Typical Propagation Delay: 9ns at VCC = 5V, CL = 15pF, TA = 25 oC • Fanout (Over Temperature Range) - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads • Wide Operating Temperature Range . . . -55oC to 125oC • Balanced Propagation Delay and Transition Times • Significant Power Reduction Compared to LSTTL Logic ICs • HC Types - 2V to 6V Operation - High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V • HCT Types - 4.5V to 5.5V Operation - Direct LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH = 2V (Min) - CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH Description The Harris CD74HC21, CD74HCT21, logic gates utilize silicon gate CMOS technology to achieve operating speeds similar to LSTTL gates with the low power consumption of standard CMOS integrated circuits. All devices have the ability to drive 10 LSTTL loads. The 74HCT logic family is functionally pin compatible with the standard 74LS logic family. Pinout CD74HC21, CD74HCT21 (PDIP, SOIC) TOP VIEW Ordering Information PART NUMBER TEMP. RANGE (oC) PACKAGE PKG. NO. CD74HC21E -55 to 125 14 Ld PDIP E14.3 CD74HCT21E -55 to 125 14 Ld PDIP E14.3 CD74HC21M -55 to 125 14 Ld SOIC M14.15 CD74HCT21M -55 to 125 14 Ld SOIC M14.15 NOTES: 1. When ordering, use the entire part number. Add the suffix 96 to obtain the variant in the tape and reel. 2. Die for this part number is available which meets all electrical specifications. Please contact your local sales office or Harris customer service for ordering information. 1A 1B NC 1C 1D 1Y GND VCC 2D 2C NC 2B 2A 2Y 1 2 3 4 5 6 7 14 13 12 11 10 9 8 August 1997 CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright © Harris Corporation 1997 CD74HC21, CD74HCT21 High Speed CMOS Logic Dual 4-Input AND Gate File Number 1782.1 [ /Title (CD74H C21, CD74H CT21) /Subject (High Speed CMOS Logic Dual 4- Input |
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