Datasheet > HEF4021BTT

HEF4021BTT

更新时间： 2024-10-01 11:12:51

品牌	Logo	应用领域
安世 - NEXPERIA		光电二极管逻辑集成电路触发器
页数	文件大小	规格书
14页	238K
描述
8-bit static shift registerProduction

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HEF4021BTT 数据手册

HEF4021B

8-bit static shift register

Rev. 11 — 1 December 2021

Product data sheet

1. General description

The HEF4021B is an 8-bit static shift register (parallel-to-serial converter) with a synchronous

serial data input (DS), a clock input (CP), an asynchronous active HIGH parallel load input (PL),

eight asynchronous parallel data inputs (D0 to D7) and buffered parallel outputs from the last three

stages (Q5 to Q7). Each register stage is a D-type master-slave flip-flop with a set direct (SD) and

clear direct (CD) input. Information on D0 to D7 is asynchronously loaded into the register while PL

is HIGH, independent of CP and DS. When PL is LOW, data on DS is shifted into the first register

position and all the data in the register is shifted one position to the right on the LOW-to-HIGH

transition of CP. Schmitt trigger action makes the clock input highly tolerant of slower rise and fall

times.

The device operates over a recommended V_DDpower supply range of 3 V to 15 V referenced to

V_SS(usually ground). Unused inputs must be connected to V_DD, V_SS, or another input.

2. Features and benefits

•

Wide supply voltage range from 3.0 V to 15.0 V

•

CMOS low power dissipation

High noise immunity

Tolerant of slower rise and fall times

Fully static operation

5 V, 10 V, and 15 V parametric ratings

Standardized symmetrical output characteristics

Complies with JEDEC standard JESD 13-B

ESD protection:

•

HBM JESD22-A114F exceeds 2000 V

MM JESD22-A115-B exceeds 200 V

•

Specified from -40 °C to +85 °C and from -40 °C to +125 °C

3. Ordering information

Table 1. Ordering information

Type number

Package

Temperature range

-40 °C to +125 °C

Name

Description

Version

HEF4021BT

SO16

plastic small outline package; 16 leads;

body width 3.9 mm

SOT109-1

HEF4021BTT

-40 °C to +125 °C

TSSOP16 plastic thin shrink small outline package; 16 leads; SOT403-1

body width 4.4 mm

12 3 4 5 6 7...14

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