SN74LS123

更新时间： 2024-11-17 23:06:19

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		触发器
页数	文件大小	规格书
10页	280K
描述
RETRIGGERABLE MONOSTABLE MULTIVIBRATORS

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中文翻译

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数据手册

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SN74LS123 数据手册

SN54/74LS122

SN54/74LS123

RETRIGGERABLE MONOSTABLE

MULTIVIBRATORS

These dc triggered multivibrators feature pulse width control by three meth-

ods. The basic pulse width is programmed by selection of external resistance

and capacitance values. The LS122 has an internal timing resistor that allows

the circuits to be used with only an external capacitor. Once triggered, the ba-

sic pulse width may be extended by retriggering the gated low-level-active (A)

or high-level-active (B) inputs, or be reduced by use of the overriding clear.

RETRIGGERABLE MONOSTABLE

MULTIVIBRATORS

LOW POWER SCHOTTKY

• Overriding Clear Terminates Output Pulse

• Compensated for V

and Temperature Variations

• DC Triggered from Active-High or Active-Low Gated Logic Inputs

• Retriggerable for Very Long Output Pulses, up to 100% Duty Cycle

• Internal Timing Resistors on LS122

J SUFFIX

CERAMIC

CASE 620-09

SN54/74LS123 (TOP VIEW)

(SEE NOTES 1 THRU 4)

N SUFFIX

PLASTIC

CASE 648-08

D SUFFIX

SOIC

CASE 751B-03

J SUFFIX

CERAMIC

CASE 632-08

SN54/74LS122 (TOP VIEW)

(SEE NOTES 1 THRU 4)

N SUFFIX

PLASTIC

CASE 646-06

D SUFFIX

SOIC

CASE 751A-02

NOTES:

ORDERING INFORMATION

1. An external timing capacitor may be connected between C

2. To use the internal timing resistor of the LS122, connect R to V

3. For improved pulse width accuracy connect an external resistor between R /C

and R /C (positive).

ext ext

ext

SN54LSXXXJ Ceramic

SN74LSXXXN Plastic

SN74LSXXXD SOIC

int CC

and

ext ext

with R open-circuited.

int

4. To obtain variable pulse widths, connect an external variable resistance between R /C

int ext

and V

FAST AND LS TTL DATA

5-197

12 3 4 5 6 7...10

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