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SNx4HC14 具有施密特触发输入的六路反相器

1 特性

• 缓冲输入

• 宽工作电压范围：2V 至 6V

• 宽工作温度范围：-40°C 至 +85°C

• 支持多达 10 个 LSTTL 负载的扇出

• 与 LSTTL 逻辑 IC 相比，可显著降低功耗

2 应用

• 同步反相时钟输入

• 对开关进行去抖

• 对数字信号进行反相

说明

此器件包含六个具有施密特触发输入的独立反相器。每

个逻辑门以正逻辑执行布尔函数 Y = A。

器件信息

器件型号

封装

(1)

封装尺寸

(2)

本体尺寸

(3)

SN74AHC14

D（SOIC，14） 8.65mm × 6mm 8.65mm × 3.9mm

DB（SSOP，

14）

6.2mm × 7.8mm 6.2mm × 5.30mm

N（PDIP，14） 19.3mm × 9.4mm 19.3mm × 6.35mm

NS（SOP，14） 10.2mm x 7.8mm 10.3mm x 5.3mm

PW（TSSOP，

14）

5mm × 6.4mm 5mm × 4.4mm

SN54AHC14

J（CDIP，14） 19.56mm × 7.9mm 19.56mm × 6.67mm

W（CFP，14） 9.21mm x 9mm 9.21mm × 6.3mm

FK（LCCC，

20）

8.9mm × 8.9mm 8.9mm × 8.9mm

(1) 有关更多信息，请参阅节 11。

(2) 封装尺寸（长 × 宽）为标称值，并包括引脚（如适用）。

(3) 本体尺寸（长 × 宽）为标称值，不包括引脚。

GND

功能引脚分配

SN54HC14, SN74HC14

ZHCSOD1L – DECEMBER 1982 – REVISED FEBRUARY 2025

参考文献

本资源的原文使用英文撰写。为方便起见，TI 提供了译文；由于翻译过程中可能使用了自动化工具，TI 不保证译文的准确性。为确认

准确性，请务必访问 ti.com 参考最新的英文版本（控制文档）。

English Data Sheet: SCLS085

Table of Contents

1 特性................................................................................... 1

2 应用................................................................................... 1

3 说明................................................................................... 1

4 Pin Configuration and Functions...................................3

5 Specifications.................................................................. 4

5.1 Absolute Maximum Ratings........................................ 4

5.2 ESD Ratings............................................................... 4

5.3 Recommended Operating Conditions.........................4

5.4 Thermal Information....................................................4

5.5 Electrical Characteristics - 74..................................... 5

5.6 Electrical Characteristics - 54..................................... 5

5.7 Switching Characteristics - 74.....................................6

5.8 Switching Characteristics - 54.....................................7

5.9 Operating Characteristics........................................... 7

5.10 Typical Characteristics.............................................. 7

6 Parameter Measurement Information............................ 8

7 Detailed Description........................................................9

7.1 Overview..................................................................... 9

7.2 Functional Block Diagram........................................... 9

7.3 Feature Description.....................................................9

7.4 Device Functional Modes..........................................10

8 Application and Implementation.................................. 11

8.1 Application Information..............................................11

8.2 Typical Application.................................................... 11

8.3 Power Supply Recommendations.............................13

8.4 Layout....................................................................... 13

9 Device and Documentation Support............................14

9.1 Documentation Support............................................ 14

9.2 支持资源....................................................................14

9.3 Trademarks...............................................................14

9.4 静电放电警告............................................................ 14

9.5 术语表....................................................................... 14

10 Revision History.......................................................... 14

11 Mechanical, Packaging, and Orderable

Information.................................................................... 14

SN54HC14, SN74HC14

ZHCSOD1L – DECEMBER 1982 – REVISED FEBRUARY 2025

www.ti.com.cn

提交文档反馈

Product Folder Links: SN54HC14 SN74HC14

English Data Sheet: SCLS085

5 Specifications

5.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)

(1)

MIN MAX UNIT

Supply voltage

–0.5

7 V

Input clamp current

(2)

< 0 or V

> V

±20 mA

Output clamp current

(2)

< 0 ±20 mA

Continuous output current V

= 0 to V

±25 mA

Continuous current through V

or GND ±50 mA

Junction temperature

(3)

150 °C

stg

Storage temperature

–60

150 °C

(1) Stresses beyond those listed under Absolute Maximum Rating may cause permanent damage to the device. These are stress ratings

only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under

Recommended Operating Condition. Exposure to absolute-maximum-rated conditions for extended periods may affect device

reliability.

(2) The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

(3) Guaranteed by design.

5.2 ESD Ratings

VALUE UNIT

(ESD)

Electrostatic discharge

Human-body model (HBM), per ANSI/ESDA/

JEDEC JS-001

(1)

±2000

Charged-device model (CDM), per JEDEC

specification JESD22-C101

(2)

±1500

(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.

(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

5.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

MIN NOM MAX UNIT

Supply voltage 2 5 6 V

Input voltage 0 V

Output voltage 0 V

Operating free-air temperature

SN54HC14

–55

125

°C

SN74HC14

–40

5.4 Thermal Information

THERMAL METRIC

(1)

SN74HC14

UNITD (SOIC) DB (SSOP) N (PDIP) NS (SO) PW (TSSOP)

14 PINS 14 PINS 14 PINS 14 PINS 14 PINS

θJA

Junction-to-ambient thermal

resistance

133.6 114.8 60.7 122.6 151.7 °C/W

JC(top)

Junction-to-case (top) thermal

resistance

89 64.5 47.8 81.8 79.4 °C/W

θJB

Junction-to-board thermal

resistance

89.5 65.1 40.6 83.8 94.7 °C/W

Junction-to-top characterization

parameter

45.5 23.7 26.9 45.4 25.2 °C/W

Junction-to-board

characterization parameter

89.1 64.4 40.5 83.4 94.1 °C/W

SN54HC14, SN74HC14

ZHCSOD1L – DECEMBER 1982 – REVISED FEBRUARY 2025

www.ti.com.cn

提交文档反馈

Product Folder Links: SN54HC14 SN74HC14

English Data Sheet: SCLS085

THERMAL METRIC

(1)

SN74HC14

UNITD (SOIC) DB (SSOP) N (PDIP) NS (SO) PW (TSSOP)

14 PINS 14 PINS 14 PINS 14 PINS 14 PINS

JC(bot)

Junction-to-case (bottom)

thermal resistance

N/A N/A N/A N/A N/A °C/W

(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report.

5.5 Electrical Characteristics - 74

over operating free-air temperature range; typical values measured at T

= 25°C (unless otherwise noted).

PARAMETER TEST CONDITIONS V

Operating free-air temperature (T

)

UNIT25°C -40°C to 85°C

MIN TYP MAX MIN TYP MAX

T+

Positive

switching

threshold

2 V 0.7 1.2 1.5 0.7 1.5

V4.5 V 1.55 2.5 3.13 1.55 3.13

6 V 2.1 3.3 4.2 2.1 4.2

T-

Negative

switching

threshold

2 V 0.3 0.6 1 0.3 1

V4.5 V 0.9 1.6 2.45 0.9 2.45

6 V 1.2 2 3.2 1.2 3.2

ΔV

Hysteresis (V

T+

T-

)

2 V 0.2 0.6 1.2 0.2 1.2

V4.5 V 0.4 0.9 2.1 0.4 2.1

6 V 0.5 1.3 2.5 0.5 2.5

High-level

output voltage

= V

or V

= –20 µA

2 V 1.9 1.998 1.9

4.5 V 4.4 4.499 4.4

6 V 5.9 5.999 5.9

= –4 mA

4.5 V 3.98 4.3 3.84

= –5.2 mA

6 V 5.48 5.8 5.34

Low-level output

voltage

= V

or V

= 20 µA

2 V 0.002 0.1 0.1

4.5 V 0.001 0.1 0.1

6 V 0.001 0.1 0.1

= 4 mA 4.5 V 0.17 0.26 0.33

= 5.2 mA 6 V 0.15 0.26 0.33

Input leakage

current

= V

or 0 6 V ±0.1 ±1 µA

Supply current

= V

or 0

= 0 6 V 2 20 µA

Input

capacitance

5 V 3 10 10 pF

5.6 Electrical Characteristics - 54

over operating free-air temperature range; typical values measured at TA = 25°C (unless otherwise noted).

PARAMETER TEST CONDITIONS V

Operating free-air temperature (T

)

UNIT25°C

–40°C to 85°C –55°C to 125°C

MIN TYP MAX MIN TYP MAX MIN TYP MAX

T+

Positive

switching

threshold

2 V 0.7 1.2 1.5 0.7 1.5 0.7 1.5

V4.5 V 1.55 2.5 3.13 1.55 3.13 1.55 3.13

6 V 2.1 3.3 4.2 2.1 4.2 2.1 4.2

www.ti.com.cn

SN54HC14, SN74HC14

ZHCSOD1L – DECEMBER 1982 – REVISED FEBRUARY 2025

提交文档反馈

Product Folder Links: SN54HC14 SN74HC14

English Data Sheet: SCLS085

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