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SN74HCT165 8-Bit Parallel-Load Shift Registers

1 Features

• LSTTL input logic compatible

– V

IL(max)

= 0.8 V, V

IH(min)

= 2 V

• CMOS input logic compatible

– I

I

≤ 1 µA at V

OL

, V

OH

• 4.5 V to 5.5 V operation

• Supports fanout up to 10 LSTTL loads

• Direct Overriding Load (Data) Inputs

• Gated Clock Inputs

• Extended ambient temperature range: –40°C to

+125°C, T

A

2 Applications

• Increase the Number of Inputs on a Microcontroller

3 Description

The SN74HCT165 is a parallel- or serial-in, serial-out

8-bit shift register. Parallel-in access to each stage is

provided by eight individual direct data (A-H) inputs

that are enabled by a low level at the shift/load

(SH/LD) input. The SN74HCT165 also features a

clock-inhibit (CLK INH) function and a complementary

serial (Q

H

) output.

Device Information

PART NUMBER PACKAGE

(1)

BODY SIZE (NOM)

SN74HCT165PW TSSOP (16) 5.00 mm × 4.40 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

SH/LD

SER

CLK INH

CLK

A

D

S R

Q

B

D

S R

Q

5 Additional

Shift Register

Stages

C D E F G

H

D

S R

Q

H

Q

H

Positive Logic Diagram

ADVANCE INFORMATION

SN74HCT165

SCLS881 – OCTOBER 2021

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. ADVANCE INFORMATION for preproduction products; subject to change

without notice.

Table of Contents

1 Features............................................................................1

2 Applications..................................................................... 1

3 Description.......................................................................1

4 Revision History.............................................................. 2

5 Pin Configuration and Functions...................................3

6 Specifications.................................................................. 4

6.1 Absolute Maximum Ratings........................................ 4

6.2 ESD Ratings............................................................... 4

6.3 Recommended Operating Conditions.........................4

6.4 Thermal Information....................................................4

6.5 Electrical Characteristics.............................................5

6.6 Timing Characteristics.................................................5

6.7 Switching Characteristics............................................6

6.8 Typical Characteristics................................................ 7

7 Parameter Measurement Information............................ 8

8 Detailed Description........................................................9

8.1 Overview..................................................................... 9

8.2 Functional Block Diagram........................................... 9

8.3 Feature Description.....................................................9

8.4 Device Functional Modes..........................................11

9 Application and Implementation.................................. 12

9.1 Application Information............................................. 12

9.2 Typical Application.................................................... 12

10 Power Supply Recommendations..............................15

11 Layout........................................................................... 15

11.1 Layout Guidelines................................................... 15

11.2 Layout Example...................................................... 15

12 Device and Documentation Support..........................16

12.1 Documentation Support.......................................... 16

12.2 Receiving Notification of Documentation Updates..16

12.3 Support Resources................................................. 16

12.4 Trademarks............................................................. 16

12.5 Electrostatic Discharge Caution..............................16

12.6 Glossary..................................................................16

13 Mechanical, Packaging, and Orderable

Information.................................................................... 16

13.1 Tape and Reel Information......................................20

4 Revision History

DATE REVISION NOTES

October 2021 * Initial Release

SN74HCT165

SCLS881 – OCTOBER 2021

www.ti.com

ADVANCE INFORMATION

2 Submit Document Feedback

Product Folder Links: SN74HCT165

6 Specifications

6.1 Absolute Maximum Ratings

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

(1)

MIN MAX UNIT

V

CC

Supply voltage –0.5 7 V

I

IK

Input clamp current

(2)

V

I

< 0 or V

I

> V

CC

+ 0.5 V –20 20 mA

I

OK

Output clamp current

(2)

V

O

< 0 or V

O

> V

CC

+ 0.5

V

–20 20 mA

I

O

Continuous output current V

O

= 0 to V

CC

–35 35 mA

I

CC

Continuous output current through V

CC

or GND –70 70 mA

T

J

Junction temperature 150 °C

T

stg

Storage temperature –65 150 °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.

6.2 ESD Ratings

VALUE UNIT

V

(ESD)

Electrostatic discharge

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

JEDEC JS-001

(1)

±4000

V

Charged-device model (CDM), per ANSI/ESDA/

JEDEC JS-002

(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.

6.3 Recommended Operating Conditions

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

MIN NOM MAX UNIT

V

CC

Supply voltage 4.5 5 5.5 V

V

IH

High-level input voltage V

CC

= 4.5 V to 5.5V 2 V

V

IL

Low-level input voltage V

CC

= 4.5 V to 5.5V 0.8 V

V

I

Input voltage 0 V

CC

V

O

Output voltage 0 V

CC

V

Δt/Δv Input transition rise and fall rate V

CC

= 4.5 V to 5.5V 500 ns/V

T

A

Ambient temperature –40 125 °C

6.4 Thermal Information

THERMAL METRIC

(1)

SN74HCT165

UNITPW (TSSOP)

16 PINS

R

θJA

Junction-to-ambient thermal resistance 131.8 °C/W

R

θJC(top)

Junction-to-case (top) thermal resistance 69.8 °C/W

R

θJB

Junction-to-board thermal resistance 76.5 °C/W

Ψ

JT

Junction-to-top characterization parameter 20.9 °C/W

Y

JB

Junction-to-board characterization parameter 76.1 °C/W

SN74HCT165

SCLS881 – OCTOBER 2021

www.ti.com

ADVANCE INFORMATION

4 Submit Document Feedback

Product Folder Links: SN74HCT165

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