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CD54HC85 Folha de dados(PDF) 1 Page - Texas Instruments |
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CD54HC85 Folha de dados(HTML) 1 Page - Texas Instruments |
1 / 17 page 1 Data sheet acquired from Harris Semiconductor SCHS136E Features • Buffered Inputs and Outputs • Typical Propagation Delay: 13ns (Data to Output at VCC = 5V, CL = 15pF, TA = 25 oC • Serial or Parallel Expansion Without External Gating • 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 Pinout CD54HC85, CD54HCT85 (CERDIP) CD74HC85 (PDIP, SOIC, SOP, TSSOP) CD74HCT85 (PDIP, SOIC) TOP VIEW Description The ’HC85 and ’HCT85 are high speed magnitude comparators that use silicon-gate CMOS technology to achieve operating speeds similar to LSTTL with the low power consumption of standard CMOS integrated circuits. These 4-bit devices compare two binary, BCD, or other monotonic codes and present the three possible magnitude results at the outputs (A > B, A < B, and A = B). The 4-bit input words are weighted (A0 to A3 and B0 to B3), where A3 and B3 are the most significant bits. The devices are expandable without external gating, in both serial and parallel fashion. The upper part of the truth table indicates operation using a single device or devices in a serially expanded application. The parallel expansion scheme is described by the last three entries in the truth table. 14 15 16 9 13 12 11 10 1 2 3 4 5 7 6 8 B3 (A < B) IN (A = B) IN (A > B) IN (A > B) OUT (A = B) OUT GND (A < B) OUT VCC B2 A2 A1 B1 A0 B0 A3 Ordering Information PART NUMBER TEMP. RANGE (oC) PACKAGE CD54HC85F3A -55 to 125 16 Ld CERDIP CD54HCT85F3A -55 to 125 16 Ld CERDIP CD74HC85E -55 to 125 16 Ld PDIP CD74HC85M -55 to 125 16 Ld SOIC CD74HC85MT -55 to 125 16 Ld SOIC CD74HC85M96 -55 to 125 16 Ld SOIC CD74HC85NSR -55 to 125 16 Ld SOP CD74HC85PW -55 to 125 16 Ld TSSOP CD74HC85PWR -55 to 125 16 Ld TSSOP CD74HC85PWT -55 to 125 16 Ld TSSOP CD74HCT85E -55 to 125 16 Ld PDIP CD74HCT85M -55 to 125 16 Ld SOIC CD74HCT85MT -55 to 125 16 Ld SOIC CD74HCT85M96 -55 to 125 16 Ld SOIC NOTE: When ordering, use the entire part number. The suffixes 96 and R denote tape and reel. The suffix T denotes a small-quantity reel of 250. August 1997 - Revised October 2003 CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright © 2003, Texas Instruments Incorporated CD54HC85, CD74HC85, CD54HCT85, CD74HCT85 High-Speed CMOS Logic 4-Bit Magnitude Comparator [ /Title (CD74 HC85, CD74 HCT85 ) /Sub- ject (High Speed CMOS Logic 4-Bit Magni- tude Com- para- |
Nº de peça semelhante - CD54HC85_07 |
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Descrição semelhante - CD54HC85_07 |
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