SN54LV221A

更新时间： 2024-11-24 23:03:07

品牌	Logo	应用领域
德州仪器 - TI		触发器输入元件
页数	文件大小	规格书
13页	211K
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DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS

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SN54LV221A 数据手册

SN54LV221A, SN74LV221A

DUAL MONOSTABLE MULTIVIBRATORS

WITH SCHMITT-TRIGGER INPUTS

SCLS450 – DECEMBER 1999

SN54LV221A . . . J OR W PACKAGE

SN74LV221A . . . D, DB, DGV, NS, OR PW PACKAGE

(TOP VIEW)

EPIC (Enhanced-Performance Implanted

CMOS) Process

Schmitt-Trigger Circuitry on A, B, and CLR

Inputs for Slow Input Transition Rates

1R /C

Edge Triggered From Active-High or

Active-Low Gated Logic Inputs

ext ext

1CLR

ext

Overriding Clear Terminates Output Pulse

Glitch-Free Power-Up Reset on Outputs

12 2Q

2CLR

ext

Latch-Up Performance Exceeds 100 mA Per

JESD 78, Class II

2R /C

ext ext

GND

ESD Protection Exceeds JESD 22

– 2000-V Human-Body Model (A114-A)

– 200-V Machine Model (A115-A)

SN54LV221A . . . FK PACKAGE

(TOP VIEW)

– 1000-V Charged-Device Model (C101)

Package Options Include Plastic

Small-Outline (D, NS), Shrink Small-Outline

(DB), Thin Very Small-Outline (DGV), and

Thin Shrink Small-Outline (PW) Packages,

Ceramic Flat (W) Packages, Chip Carriers

(FK), and DIPs (J)

1 20 19

1CLR

ext

description

15 2Q

The ’LV221A devices are dual multivibrators

designed for 2-V to 5.5-V V operation. Each

2CLR

ext

9 10 11 12 13

multivibrator has a negative-transition-triggered

(A) input and a positive-transition-triggered (B)

input, either of which can be used as an inhibit

input.

NC – No internal connection

These edge-triggered multivibrators feature

output pulse-duration control by three methods. In

the first method, the A input is low and the B input

goes high. In the second method, the B input is

high and the A input goes low. In the third method,

the A input is low, the B input is high, and the clear

(CLR) input goes high.

The output pulse duration is programmable by selecting external resistance and capacitance values. The

external timing capacitor must be connected between C and R /C (positive) and an external resistor

ext

ext ext

connected between R /C and V . Toobtainvariablepulsedurations, connectanexternalvariableresistor

ext ext

between and R /C and V . The output pulse duration can also be reduced by taking CLR low.

ext ext

Pulse triggering occurs at a particular voltage level and is not directly related to the transition time of the input

pulse. The A, B, and CLR inputs have Schmitt triggers with sufficient hysteresis to handle slow input transition

rates with jitter-free triggering at the outputs.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

EPIC is a trademark of Texas Instruments Incorporated.

UNLESS OTHERWISE NOTED this document contains PRODUCTION

DATA information current as of publication date. Products conform to

specifications per the terms of Texas Instruments standard warranty.

Production processing does not necessarily include testing of all

parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...13

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与SN54LV221A相关器件

型号	品牌	获取价格	描述	数据表
SN54LV221A_07	TI	获取价格	DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS
SN54LV221A_08	TI	获取价格	DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS
SN54LV221AFK	TI	获取价格	DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS
SN54LV221AJ	TI	获取价格	DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS
SN54LV221AW	TI	获取价格	DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS
SN54LV240	TI	获取价格	OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
SN54LV240A	TI	获取价格	OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
SN54LV240A_07	TI	获取价格	OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
SN54LV240A_08	TI	获取价格	OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
SN54LV240AFK	TI	获取价格	OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS

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