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參數(shù)資料
| 型號： | 31402B2A |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT TRIGGER INPUTS |
| 中文描述： | 施密特觸發(fā)輸入與雙單穩(wěn)態(tài)多頻振蕩器 |
| 文件頁數(shù)： | 5/23頁 |
| 文件大?。?/td> | 620K |
| 代理商： | 31402B2A |
SDLS213B DECEMBER 1983 REVISED NOVEMBER 2004
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
CC
Input voltage range, V
I
(see Note 1): ’LS221
7 V
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
’221
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
θ
JA
(see Note 2): D package
DB package
N package
NS package
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES:
1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
5.5 V
73
°
C/W
82
°
C/W
67
°
C/W
64
°
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
65
°
C to 150
°
C
recommended operating conditions (see Note 3)
SN54221
NOM
SN74221
NOM
UNIT
MIN
MAX
MIN
MAX
VCC
IOH
IOL
Supply voltage
4.5
5
5.5
4.75
5
5.25
V
μ
A
mA
High-level output current
800
800
Low-level output current
16
16
v/
t
Rise or fall of input pulse rate
B input
1*
1
V/s
V/
μ
s
°
C
A input
1*
1
TA
Operating free-air temperature
On products compliant to MIL-PRF-38535, this parameter is not production tested.
NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs
, literature number SCBA004.
55
125
0
70
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