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參數(shù)資料
| 型號： | SN74BCT2574 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Octal Edge-Triggered D-Typt Flip-Flops With 3-State Outputs(八邊沿D觸發(fā)器(三態(tài)輸出)) |
| 中文描述： | 八路邊沿觸發(fā)D - Typt翻轉(zhuǎn)與3正反器態(tài)輸出（八邊沿?觸發(fā)器（三態(tài)輸出）） |
| 文件頁數(shù)： | 3/5頁 |
| 文件大?。?/td> | 94K |
| 代理商： | SN74BCT2574 |
SN74BCT2574
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOP
WITH 3-STATE OUTPUTS
SCBS255 – SEPTEMBER 1991 – REVISED NOVEMBER 1993
2–3
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)
Voltage range applied to any output in the disabled or power-off state, V
O
Voltage range applied to any output in the high state, V
O
Input clamp current, I
IK
(V
I
< 0)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the low state, I
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–0.5 V to 7 V
–0.5 V to 7 V
–0.5 V to 5.5 V
–0.5 V to V
CC
–30 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
60 mA
0
°
C to 70
°
C
–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.
NOTE 1: The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
recommended operating conditions (see Note 2)
MIN
NOM
MAX
UNIT
VCC
VIH
VIL
IIK
IOH
IOL
TA
NOTE 2: Unused or floating inputs must be held high or low.
Supply voltage
4.5
5
5.5
V
High-level input voltage
2
V
Low-level input voltage
0.8
V
Input clamp current
–18
mA
High-level output current
–12
mA
Low-level output current
12
mA
°
C
Operating free-air temperature
0
70
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VIK
VCC = 4.5 V,
II = –18 mA
IOH = – 1 mA
IOH = –12 mA
IOL = 1 mA
IOL = 12 mA
VI = 5.5 V
VI = 2.7 V
VI = 0.5 V
VO = 0
VO = 2.7 V
VO = 0.5 V
Outputs open
–1.2
V
VOH
VCC= 4 5 V
VCC = 4.5 V
2.4
V
2
VOL
VCC= 4 5 V
VCC = 4.5 V
0.15
0.5
V
0.35
0.8
II
IIH
IIL
IOS§
IOZH
IOZL
ICCL
ICCH
ICCZ
Ci
Co
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5 V,
VCC = 5 V,
0.4
mA
μ
A
mA
20
–0.6
–100
–225
mA
μ
A
μ
A
mA
50
–50
36
58
Outputs open
2
6
mA
Outputs open
2
8
mA
VI = 2.5 V or 0.5 V
VO = 2.5 V or 0.5 V
4.5
pF
9
pF
All typical values are at VCC = 5 V, TA = 25
°
C.
§Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
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