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参数资料
| 型号： | SN74LS123N |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 谐振器 |
| 英文描述： | LS SERIES, DUAL MONOSTABLE MULTIVIBRATOR, PDIP16 |
| 封装： | PLASTIC, DIP-16 |
| 文件页数： | 1/10页 |
| 文件大小： | 275K |
| 代理商： | SN74LS123N |
5-197
FAST AND LS TTL DATA
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.
Overriding Clear Terminates Output Pulse
Compensated for VCC 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
SN54 / 74LS122 (TOP VIEW)
(SEE NOTES 1 THRU 4)
SN54 / 74LS123 (TOP VIEW)
(SEE NOTES 1 THRU 4)
NOTES:
1. An external timing capacitor may be connected between Cext and Rext/Cext (positive).
2. To use the internal timing resistor of the LS122, connect Rint to VCC.
3. For improved pulse width accuracy connect an external resistor between Rext/Cext and
VCC with Rint open-circuited.
4. To obtain variable pulse widths, connect an external variable resistance between Rint/Cext
and VCC.
14
13
12
11
10
9
1
2
3
4
5
6
8
7
VCC
Rext/
Cext NC Cext NC Rint
Q
A1
A2
B1
B2
CLR
Q
GND
CLR Q
Q
Rint
2
Rext/
Cext
1
Cext
1Rext/
Cext
14
13
12
11
10
9
1
2
3
4
5
6
7
16
15
8
VCC
1A
1Q
2Q
2B
2
CLR
2A
1B
1
CLR
1Q
2Q
2
Cext
GND
Q
CLR
NC NO INTERNAL CONNECTION.
SN54/74LS122
SN54/74LS123
RETRIGGERABLE MONOSTABLE
MULTIVIBRATORS
LOW POWER SCHOTTKY
J SUFFIX
CERAMIC
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
16
1
16
1
ORDERING INFORMATION
SN54LSXXXJ
Ceramic
SN74LSXXXN
Plastic
SN74LSXXXD
SOIC
16
1
D SUFFIX
SOIC
CASE 751B-03
J SUFFIX
CERAMIC
CASE 632-08
N SUFFIX
PLASTIC
CASE 646-06
14
1
14
1
14
1
D SUFFIX
SOIC
CASE 751A-02
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SN74LS123N | 制造商:Texas Instruments 功能描述:Multivibrator Logic IC |
| SN74LS123NDS | 制造商:Motorola Inc 功能描述:Multivibrator, Monostable Type, 16 Pin, Plastic, DIP |
| SN74LS123NE4 | 功能描述:单稳态多谐振荡器 Dual retrig monostbl multivibrators RoHS:否 制造商:Texas Instruments 每芯片元件:1 逻辑系列:LVC 逻辑类型:Monostable Multivibrator 封装 / 箱体:SSOP-8 传播延迟时间:18.6 ns 高电平输出电流:- 32 mA 低电平输出电流:32 mA 电源电压-最大:5.5 V 电源电压-最小:1.65 V 最大功率耗散: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Reel |
| SN74LS123NSR | 功能描述:单稳态多谐振荡器 Dual retrig monostbl multivibrators RoHS:否 制造商:Texas Instruments 每芯片元件:1 逻辑系列:LVC 逻辑类型:Monostable Multivibrator 封装 / 箱体:SSOP-8 传播延迟时间:18.6 ns 高电平输出电流:- 32 mA 低电平输出电流:32 mA 电源电压-最大:5.5 V 电源电压-最小:1.65 V 最大功率耗散: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Reel |
| SN74LS123NSRG4 | 功能描述:单稳态多谐振荡器 Dual retrig monostbl multivibrators RoHS:否 制造商:Texas Instruments 每芯片元件:1 逻辑系列:LVC 逻辑类型:Monostable Multivibrator 封装 / 箱体:SSOP-8 传播延迟时间:18.6 ns 高电平输出电流:- 32 mA 低电平输出电流:32 mA 电源电压-最大:5.5 V 电源电压-最小:1.65 V 最大功率耗散: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Reel |
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