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参数资料
| 型号： | SN54AHCT123AFKR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 谐振器 |
| 英文描述： | AHCT/VHCT SERIES, DUAL MONOSTABLE MULTIVIBRATOR, CQCC20 |
| 封装： | CERAMIC, CC-20 |
| 文件页数： | 1/12页 |
| 文件大小： | 163K |
| 代理商： | SN54AHCT123AFKR |
SN54AHCT123A, SN74AHCT123A
DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS
SCLS420C – JUNE 1998 – REVISED DECEMBER 1999
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D EPIC (Enhanced-Performance Implanted
CMOS) Process
D Inputs Are TTL-Voltage Compatible
D Schmitt-Trigger Circuitry On A, B, and CLR
Inputs for Slow Input Transition Rates
D Edge Triggered From Active-High or
Active-Low Gated Logic Inputs
D Retriggerable for Very Long Output Pulses
D Overriding Clear Terminates Output Pulse
D Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
D ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
D Package Options Include Plastic
Small-Outline (D), Shrink Small-Outline
(DB), Thin Very Small-Outline (DGV), and
Thin Shrink Small-Outline (PW) Packages,
Ceramic Flat (W) Packages, Ceramic Chip
Carriers (FK), and Standard Plastic (N) and
Ceramic (J) DIPs
description
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 programmed by selecting external resistance and capacitance values. The external
timing capacitor must be connected between Cext and Rext/Cext (positive) and an external resistor connected
between Rext/Cext and VCC. To obtain variable pulse durations, connect an external variable resistance between
Rext/Cext and VCC. The output pulse duration also can be reduced by taking CLR low.
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.
Once triggered, the basic pulse duration can be extended by retriggering the gated low-level-active (A) or
high-level-active (B) input. Pulse duration can be reduced by taking CLR low. CLR input can be used to override
A or B inputs. The input/output timing diagram illustrates pulse control by retriggering the inputs and early
clearing.
Copyright
1999, Texas Instruments Incorporated
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.
SN54AHCT123A ...J OR W PACKAGE
SN74AHCT123A . . . D, DB, DGV, N, OR PW PACKAGE
(TOP VIEW)
SN54AHCT123A . . . FK PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1A
1B
1CLR
1Q
2Q
2Cext
2Rext/Cext
GND
VCC
1Rext/Cext
1Cext
1Q
2Q
2CLR
2B
2A
32
1 20 19
910 11 1213
4
5
6
7
8
18
17
16
15
14
1Cext
1Q
NC
2Q
2CLR
1CLR
1Q
NC
2Q
2Cext
1B
1A
NC
2A
2B
V
1R
2R
GND
NC
CC
NC – No internal connection
ext
/C
ext
/C
ext
PRODUCTION DATA information is 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.
EPIC is a trademark of Texas Instruments Incorporated.
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SN54AHCT123AJ | 制造商:TI 制造商全称:Texas Instruments 功能描述:DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS |
| SN54AHCT123AW | 制造商:TI 制造商全称:Texas Instruments 功能描述:DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS |
| SN54AHCT125 | 制造商:TI 制造商全称:Texas Instruments 功能描述:QUADRUPLE BUS BUFFER GATES WITH 3-STATE OUTPUTS |
| SN54AHCT125_07 | 制造商:TI 制造商全称:Texas Instruments 功能描述:QUADRUPLE BUS BUFFER GATES WITH 3-STATE OUTPUTS |
| SN54AHCT125_08 | 制造商:TI 制造商全称:Texas Instruments 功能描述:QUADRUPLE BUS BUFFER GATES WITH 3-STATE OUTPUTS |
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