74HC85; 74HCT85
Applications
The 74HC/1 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.
The 74HC/HCT85 are 4-bit magnitude comparators that can be expanded to almost any length. They perform comparison of two 4-bit binary, BCD or other monotonic codes and present the three possible magnitude results at the outputs (QA>B, QA=B and QA<B). The 4-bit inputs are weighted (A0 to A3 and B0 to B3), where A3 and B3 are the most significant bits.
The operation of the '85' is described in the function table, showing all possible logic conditions. The upper part of the table describes the normal operation under all conditions that will occur in a single device or in a series expansion scheme. In the upper part of the table the three outputs are mutually exclusive. In the lower part of the table, the outputs reflect the feed forward conditions that exist in the parallel expansion scheme.
For proper compare operation the expander inputs (IA>B, IA=B and IA<B) to the least significant position must be connected as follows: IA<B=IA>B= = LOW and IA=B= HIGH.
For words greater than 4-bits, units can be cascaded by connecting outputs QA<B, QA>B and QA=B to the corresponding inputs of the significant comparator.
Features and benefits
- Serial or parallel expansion without extra gating
- Magnitude comparison of any binary words
- Output capability: standard
- ICC category: MSI
參數(shù)類型
| 型號 | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | Nr of bits | Power dissipation considerations | Tamb (°C) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 74HC85D | 2.0?-?6.0 | CMOS | ± 5.2 | 23 | 4 | low | -40~125 | 67 | 1 | 25 | SO16 |
| 74HC85PW | 2.0?-?6.0 | CMOS | ± 5.2 | 23 | 4 | low | -40~125 | 102 | 1 | 28.7 | TSSOP16 |
| 74HCT85D | 4.5?-?5.5 | TTL | ± 4 | 26 | 4 | low | -40~125 | 67 | 1 | 24.8 | SO16 |
| 74HCT85PW | 4.5?-?5.5 | TTL | ± 4 | 26 | 4 | low | -40~125 | TSSOP16 |
封裝
| 型號 | 可訂購的器件編號，（訂購碼(12NC)） | 狀態(tài) | 標示 | 封裝 | 外形圖 | 回流焊/波峰焊 | 包裝 |
|---|---|---|---|---|---|---|---|
| 74HC85D | 74HC85D,653 (933714950653) |
Active | 74HC85D |
SO16 (SOT109-1) |
SOT109-1 |
SO-SOJ-REFLOW
SO-SOJ-WAVE WAVE_BG-BD-1 |
暫無信息 |
| 74HC85PW | 74HC85PW,118 (935189180118) |
Active | HC85 |
TSSOP16 (SOT403-1) |
SOT403-1 |
SSOP-TSSOP-VSO-WAVE
|
SOT403-1_118 |
| 74HCT85D | 74HCT85D,653 (933715430653) |
Active | 74HCT85D |
SO16 (SOT109-1) |
SOT109-1 |
SO-SOJ-REFLOW
SO-SOJ-WAVE WAVE_BG-BD-1 |
暫無信息 |
| 74HCT85PW | 74HCT85PWHL (935691206118) |
Active | 74HCT85 |
TSSOP16 (SOT403-1) |
SOT403-1 |
SSOP-TSSOP-VSO-WAVE
|
SOT403-1_118 |
下表中的所有產(chǎn)品型號均已停產(chǎn) 。
| 型號 | 可訂購的器件編號，（訂購碼(12NC)） | 狀態(tài) | 標示 | 封裝 | 外形圖 | 回流焊/波峰焊 | 包裝 |
|---|---|---|---|---|---|---|---|
| 74HC85DB | 74HC85DB,112 (935190340112) |
Obsolete | no package information | ||||
| 74HC85DB,118 (935190340118) |
Obsolete | ||||||
| 74HCT85DB | 74HCT85DB,112 (935190310112) |
Obsolete | no package information | ||||
| 74HCT85DB,118 (935190310118) |
Obsolete | ||||||
環(huán)境信息
| 型號 | 可訂購的器件編號 | 化學成分 | RoHS | RHF指示符 |
|---|---|---|---|---|
| 74HC85D | 74HC85D,653 | 74HC85D |
|
|
| 74HC85PW | 74HC85PW,118 | 74HC85PW |
|
|
| 74HCT85D | 74HCT85D,653 | 74HCT85D |
|
|
| 74HCT85PW | 74HCT85PWHL | 74HCT85PW |
|
|
下表中的所有產(chǎn)品型號均已停產(chǎn) 。
| 型號 | 可訂購的器件編號 | 化學成分 | RoHS | RHF指示符 |
|---|---|---|---|---|
| 74HC85DB | 74HC85DB,112 | 74HC85DB |
|
|
| 74HC85DB | 74HC85DB,118 | 74HC85DB |
|
|
| 74HCT85DB | 74HCT85DB,112 | 74HCT85DB |
|
|
| 74HCT85DB | 74HCT85DB,118 | 74HCT85DB |
|
|
文檔 (13)
| 文件名稱 | 標題 | 類型 | 日期 |
|---|---|---|---|
| 74HC_HCT85 | 4-bit magnitude comparator | Data sheet | 2024-09-06 |
| AN90063 | Questions about package outline drawings | Application note | 2025-10-22 |
| SOT109-1 | 3D model for products with SOT109-1 package | Design support | 2020-01-22 |
| SOT403-1 | 3D model for products with SOT403-1 package | Design support | 2020-01-22 |
| Nexperia_package_poster | Nexperia package poster | Leaflet | 2020-05-15 |
| SO16_SOT109-1_mk | plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.35 mm body | Marcom graphics | 2017-01-28 |
| TSSOP16_SOT403-1_mk | plastic, thin shrink small outline package; 16 leads; 0.65 mm pitch; 5 mm x 4.4 mm x 1.1 mm body | Marcom graphics | 2017-01-28 |
| SOT109-1 | plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm body | Package information | 2023-11-07 |
| SOT403-1 | plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.2 mm body | Package information | 2023-11-08 |
| SO-SOJ-REFLOW | Footprint for reflow soldering | Reflow soldering | 2009-10-08 |
| SO-SOJ-WAVE | Footprint for wave soldering | Wave soldering | 2009-10-08 |
| WAVE_BG-BD-1 | Wave soldering profile | Wave soldering | 2021-09-08 |
| SSOP-TSSOP-VSO-WAVE | Footprint for wave soldering | Wave soldering | 2009-10-08 |
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