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CD54HC85

更新时间： 2024-11-10 05:09:03
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德州仪器 - TI /
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15页 352K
描述
High-Speed CMOS Logic 4-Bit Magnitude Comparator

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CD54HC85 数据手册

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CD54HC85, CD74HC85,  
CD54HCT85, CD74HCT85  
Data sheet acquired from Harris Semiconductor  
SCHS136E  
High-Speed CMOS Logic  
4-Bit Magnitude Comparator  
August 1997 - Revised October 2003  
Features  
Description  
• Buffered Inputs and Outputs  
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.  
• Typical Propagation Delay: 13ns (Data to Output at  
o
[ /Title  
(CD74  
HC85,  
CD74  
HCT85  
)
V
= 5V, C = 15pF, T = 25 C  
L A  
CC  
• Serial or Parallel Expansion Without External Gating  
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  
• Fanout (Over Temperature Range)  
- Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads  
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads  
and B are the most significant bits.  
3
o
o
/Sub-  
ject  
• Wide Operating Temperature Range . . . -55 C to 125 C  
• Balanced Propagation Delay and Transition Times  
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.  
(High  
Speed  
CMOS  
Logic  
4-Bit  
Magni-  
tude  
• Significant Power Reduction Compared to LSTTL  
Logic ICs  
• HC Types  
- 2V to 6V Operation  
Ordering Information  
- High Noise Immunity: N = 30%, N = 30%of V  
IL IH  
at  
CC  
V
= 5V  
TEMP. RANGE  
o
CC  
PART NUMBER  
CD54HC85F3A  
CD54HCT85F3A  
CD74HC85E  
( C)  
PACKAGE  
16 Ld CERDIP  
16 Ld CERDIP  
16 Ld PDIP  
16 Ld SOIC  
16 Ld SOIC  
16 Ld SOIC  
16 Ld SOP  
• HCT Types  
Com-  
para-  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
-55 to 125  
- 4.5V to 5.5V Operation  
- Direct LSTTL Input Logic Compatibility,  
V = 0.8V (Max), V = 2V (Min)  
IL IH  
- CMOS Input Compatibility, I ≤ 1µA at V , V  
l
OL OH  
CD74HC85M  
Pinout  
CD74HC85MT  
CD74HC85M96  
CD74HC85NSR  
CD74HC85PW  
CD74HC85PWR  
CD74HC85PWT  
CD74HCT85E  
CD74HCT85M  
CD74HCT85MT  
CD74HCT85M96  
CD54HC85, CD54HCT85 (CERDIP)  
CD74HC85 (PDIP, SOIC, SOP, TSSOP)  
CD74HCT85 (PDIP, SOIC)  
TOP VIEW  
16 Ld TSSOP  
16 Ld TSSOP  
16 Ld TSSOP  
16 Ld PDIP  
16 Ld SOIC  
16 Ld SOIC  
16 Ld SOIC  
B3  
(A < B) IN  
(A = B) IN  
(A > B) IN  
(A > B) OUT  
(A = B) OUT  
(A < B) OUT  
GND  
1
2
3
4
5
6
7
8
16 V  
CC  
15 A3  
14 B2  
13 A2  
12 A1  
11 B1  
10 A0  
9
B0  
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.  
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.  
Copyright © 2003, Texas Instruments Incorporated  
1
1234567...15

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CD54HC85 替代型号

型号 品牌 替代类型 描述 数据表
CD74HC85 TI

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