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| 型號(hào)： | SN54LV74AW |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 通用總線功能 |
| 英文描述： | Dual 4-Stage Binary Ripple Counter with Divide-By-2 and Divide-By-5 Sections; Package: TSSOP-16; No of Pins: 16; Container: Tape and Reel; Qty per Container: 2500 |
| 中文描述： | 雙上升沿觸發(fā)的D型觸發(fā)器 |
| 文件頁(yè)數(shù)： | 3/8頁(yè) |
| 文件大?。?/td> | 157K |
| 代理商： | SN54LV74AW |
SN54LV74A, SN74LV74A
DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS
SCLS381D – AUGUST 1997 – REVISED JUNE 1998
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)
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
Package thermal impedance,
θ
JA
(see Note 3): D package
–0.5 V to 7 V
–0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DB package
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DGV package
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NS package
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 package thermal impedance is calculated in accordance with JESD 51.
–0.5 V to V
CC
+ 0.5 V
–20 mA
±
50 mA
±
25 mA
±
50 mA
127
°
C/W
158
°
C/W
182
°
C/W
127
°
C/W
170
°
C/W
–65
°
C to 150
°
C
recommended operating conditions (see Note 4)
SN54LV74A
SN74LV74A
UNIT
MIN
MAX
5.5
MIN
MAX
5.5
VCC
Supply voltage
2
2
V
VCC = 2 V
VCC = 2.3 V to 2.7 V
VCC = 3 V to 3.6 V
VCC = 4.5 V to 5.5 V
VCC = 2 V
VCC = 2.3 V to 2.7 V
VCC = 3 V to 3.6 V
VCC = 4.5 V to 5.5 V
1.5
1.5
VIH
High level input voltage
High-level input voltage
VCC
×
0.7
VCC
×
0.7
VCC
×
0.7
VCC
×
0.7
VCC
×
0.7
VCC
×
0.7
V
0.5
0.5
VIL
Low level input voltage
Low-level input voltage
VCC
×
0.3
VCC
×
0.3
VCC
×
0.3
VCC
×
0.3
VCC
×
0.3
VCC
×
0.3
V
VI
VO
Input voltage
0
5.5
0
V
Output voltage
0
VCC
–50
0
VCC
–50
V
μ
A
VCC = 2 V
VCC = 2.3 V to 2.7 V
VCC = 3 V to 3.6 V
VCC = 4.5 V to 5.5 V
VCC = 2 V
VCC = 2.3 V to 2.7 V
VCC = 3 V to 3.6 V
VCC = 4.5 V to 5.5 V
VCC = 2.3 V to 2.7 V
VCC = 3 V to 3.6 V
VCC = 4.5 V to 5.5 V
IOH
High level output current
High-level output current
–2
–2
–6
–6
mA
–12
–12
50
50
μ
A
IOL
Low level output current
Low-level output current
2
2
6
6
mA
12
12
0
200
0
200
t/
v
Input transition rise or fall rate
0
100
0
100
ns/V
0
20
0
20
TA
Operating free-air temperature
–55
125
–40
85
°
C
NOTE 4: 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.
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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