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參數(shù)資料
| 型號(hào)： | SN54LV123AWR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 諧振器 |
| 英文描述： | TTL/H/L SERIES, DUAL MONOSTABLE MULTIVIBRATOR, CDFP16 |
| 封裝： | CERAMIC, DFP-16 |
| 文件頁(yè)數(shù)： | 7/14頁(yè) |
| 文件大?。?/td> | 224K |
| 代理商： | SN54LV123AWR |
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SN54LV123A, SN74LV123A
DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS
WITH SCHMITT-TRIGGER INPUTS
SCLS393A – APRIL 1998 – REVISED DECEMBER 1999
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description (continued)
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. The input/output timing diagram
illustrates pulse control by retriggering the inputs and early clearing.
The variance in output pulse duration from device to device typically is less than
±0.5% for given external timing
components. An example of this distribution for the ’LV123A is shown in Figure 11. Variations in output pulse
width versus supply voltage and temperature are shown in Figure 7.
During power up, Q outputs will be in the high state, and Q outputs will be in the low state. The outputs will be
glitch free without applying a reset pulse.
Pin assignments for these devices are identical to those of the ’AHC123A and ’AHCT123A devices for
interchangeability when allowed.
The SN54LV123A is characterized for operation over the full military temperature range of –55
°C to 125°C.
The SN74LV123A is characterized for operation from –40
°C to 85°C.
For additional application information on multivibrators, see the application report
Designing With The
SN74AHC123A and SN74AHCT123A, literature number SCLA014.
FUNCTION TABLE
(each multivibrator)
INPUTS
OUTPUTS
CLR
A
B
Q
L
X
L
H
X
HX
L
H
X
XL
L
H
L
↑
H
#
H
↑
L
H
These outputs are based on the
assumption that the indicated steady-state
conditions at the A and B inputs have been
set up long enough to complete any pulse
started before the setup.
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