參數(shù)資料
型號(hào): SN74HCT74DR
廠商: TEXAS INSTRUMENTS INC
元件分類: 鎖存器
英文描述: HCT SERIES, DUAL POSITIVE EDGE TRIGGERED D FLIP-FLOP, COMPLEMENTARY OUTPUT, PDSO14
封裝: GREEN, PLASTIC, SOIC-14
文件頁數(shù): 12/19頁
文件大?。?/td> 811K
代理商: SN74HCT74DR
SN54HCT74, SN74HCT74
DUAL DTYPE POSITIVEEDGETRIGGERED FLIPFLOPS
WITH CLEAR AND PRESET
SCLS169E DECEMBER 1982 REVISED APRIL 2004
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
FUNCTION TABLE
INPUTS
OUTPUT
PRE
CLR
CLK
D
Q
L
H
X
H
L
H
LX
XL
H
L
LX
X
H
°
HH
L
H
°
LL
H
L
X
Q0
This configuration is nonstable; that is, it does not
persist when PRE or CLR returns to its inactive
(high) level.
logic diagram (positive logic)
PRE
CLK
D
CLR
Q
C
TG
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC
0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1)
±20 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1)
±20 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous output current, IO (VO = 0 to VCC)
±25 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous current through VCC or GND
±50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
θJA (see Note 2): D package
86
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DB package
96
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
N package
80
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NS package
76
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PW package
113
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
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