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CD74HC21ME4 Datasheet(PDF) 1 Page - Texas Instruments |
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CD74HC21ME4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 13 page 1 Data sheet acquired from Harris Semiconductor SCHS131C 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 ’HC21 and 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 HCT logic family is functionally pin compatible with the standard LS logic family. Pinout CD54HC21 (CERDIP) CD74HC21, CD74HCT21 (PDIP, SOIC) TOP VIEW Ordering Information PART NUMBER TEMP. RANGE (oC) PACKAGE CD54HC21F3A -55 to 125 14 Ld CERDIP CD74HC21E -55 to 125 14 Ld PDIP CD74HC21M -55 to 125 14 Ld SOIC CD74HC21MT -55 to 125 14 Ld SOIC CD74HC21M96 -55 to 125 14 Ld SOIC CD74HCT21E -55 to 125 14 Ld PDIP CD74HCT21M -55 to 125 14 Ld SOIC CD74HCT21MT -55 to 125 14 Ld SOIC CD74HCT21M96 -55 to 125 14 Ld SOIC NOTE: When ordering, use the entire part number. The suffix 96 denotes tape and reel. The suffix T denotes a small-quantity reel of 250. 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 - Revised September 2003 CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright © 2003, Texas Instruments Incorporated CD54HC21, CD74HC21, CD74HCT21 High-Speed CMOS Logic Dual 4-Input AND Gate [ /Title (CD74H C21, CD74H CT21) /Subject (High Speed CMOS Logic Dual 4- Input |
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