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CD74HCT85M 数据表(PDF) 1 Page - Texas Instruments |
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CD74HCT85M 数据表(HTML) 1 Page - Texas Instruments |
1 / 8 page 1 Data sheet acquired from Harris Semiconductor SCHS136 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 Description The CD74HC85 and CD74HCT85 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. Pinout CD74HC85, CD74HCT85 (PDIP, SOIC) TOP VIEW Ordering Information PART NUMBER TEMP. RANGE (oC) PACKAGE PKG. NO. CD74HC85E -55 to 125 16 Ld PDIP E16.3 CD74HCT85E -55 to 125 16 Ld PDIP E16.3 CD74HC85M -55 to 125 16 Ld SOIC M16.15 CD74HCT85M -55 to 125 16 Ld SOIC M16.15 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. 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 August 1997 CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright © Harris Corporation 1997 CD74HC85, CD74HCT85 High Speed CMOS Logic 4-Bit Magnitude Comparator File Number 1770.1 [ /Title (CD74 HC85, CD74 HCT85 ) /Sub- ject (High Speed CMOS Logic 4-Bit Magni- tude Com- para- |
类似零件编号 - CD74HCT85M |
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类似说明 - CD74HCT85M |
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