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| 型号： | SN54LV74W |
| 厂商： | Texas Instruments, Inc. |
| 元件分类： | 通用总线功能 |
| 英文描述： | Dual 4-Stage Binary Ripple Counter with Divide-By-2 and Divide-By-5 Sections; Package: SOEIAJ-16; No of Pins: 16; Container: Rail; Qty per Container: 50 |
| 中文描述： | 双上升沿触发的D型触发器 |
| 文件页数： | 3/7页 |
| 文件大小： | 137K |
| 代理商： | SN54LV74W |
SN54LV74, SN74LV74
DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS
SCLS189C – FEBRUARY 1993 – REVISED APRIL 1996
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)
Output voltage range, V
O
(see Notes 1 and 2)
Input clamp current, I
IK
(V
I
< 0 or V
I
> V
CC
)
Output clamp current, I
OK
(V
O
< 0 or V
O
> V
CC
)
Continuous output current, I
O
(V
O
= 0 to V
CC
)
Continuous current through V
CC
or GND
Maximum power dissipation at T
A
= 55
°
C (in still air) (see Note 3):D package
–0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–0.5 V to V
CC
+ 0.5 V
–0.5 V to V
CC
+ 0.5 V
±
20 mA
±
50 mA
±
25 mA
±
50 mA
1.25 W
0.5 W
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . .
DB or PW 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 voltage ratings may be exceeded if the input and output current ratings are observed.
2. This value is limited to 7 V maximum.
3. The maximum package power dissipation is calculated using a junction temperature of 150
°
C and a board trace length of 750 mils.
–65
°
C to 150
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
recommended operating conditions (see Note 4)
SN54LV74
MIN
SN74LV74
MIN
UNIT
UNIT
MAX
MAX
VCC
Supply voltage
2.7
5.5
2.7
5.5
V
VIH
High level input voltage
High-level input voltage
VCC = 2.7 V to 3.6 V
VCC = 4.5 V to 5.5 V
VCC = 2.7 V to 3.6 V
VCC = 4.5 V to 5.5 V
2
2
V
3.15
3.15
VIL
Low level input voltage
Low-level input voltage
0.8
0.8
V
1.65
1.65
VI
VO
Input voltage
0
VCC
VCC
–6
0
VCC
VCC
–6
V
Output voltage
0
0
V
IOH
High level output current
High-level output current
VCC = 2.7 V to 3.6 V
VCC = 4.5 V to 5.5 V
VCC = 2.7 V to 3.6 V
VCC = 4.5 V to 5.5 V
mA
–12
–12
IOL
Low level output current
Low-level output current
6
6
mA
12
12
t/
v
TA
NOTE 4: Unused inputs must be held high or low to prevent them from floating.
Input transition rise or fall rate
0
100
0
100
ns/V
°
C
Operating free-air temperature
–55
125
–40
85
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
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