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参数资料
型号： SN74LVC74DBR
厂商： TEXAS INSTRUMENTS INC
元件分类： 锁存器
英文描述： LVC/LCX/Z SERIES, DUAL POSITIVE EDGE TRIGGERED D FLIP-FLOP, COMPLEMENTARY OUTPUT, PDSO14
封装： SSOP-14
文件页数： 3/6页
文件大小： 84K
代理商： SN74LVC74DBR
SN74LVC74
DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOP
WITH CLEAR AND PRESET
SCAS287B – JANUARY 1993 – REVISED JULY 1995
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 4)
MIN
MAX
UNIT
VCC
Supply voltage
Operating
2
3.6
V
VCC
Supply voltage
Data retention only
1.5
V
VIH
High-level input voltage
VCC = 2.7 V to 3.6 V
2
V
VIL
Low-level input voltage
VCC = 2.7 V to 3.6 V
0.8
V
VI
Input voltage
0
5.5
V
VO
Output voltage
0
VCC
V
IOH
High level output current
VCC = 2.7 V
–12
mA
IOH
High-level output current
VCC = 3 V
–24
mA
IOL
Low level output current
VCC = 2.7 V
12
mA
IOL
Low-level output current
VCC = 3 V
24
mA
t/v
Input transition rise or fall rate
0
10
ns / V
TA
Operating free-air temperature
–40
85
°C
NOTE 4: Unused inputs must be held high or low to prevent them from floating.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
IOH = – 100 A
MIN to MAX
VCC – 0.2
VOH
IOH =12 mA
2.7 V
2.2
V
VOH
IOH = – 12 mA
3 V
2.4
V
IOH = – 24 mA
3 V
2.2
IOL = 100 A
MIN to MAX
0.2
VOL
IOL = 12 mA
2.7 V
0.4
V
IOL = 24 mA
3 V
0.55
II
VI = 5.5 V or GND
3.6 V
±5
A
ICC
VI = VCC or GND,
IO = 0
3.6 V
10
A
nICC
One input at VCC – 0.6 V,
Other inputs at VCC or GND
2.7 V to 3.6 V
500
A
Ci
VI = VCC or GND
3.3 V
5
pF
For conditions shown as MIN or MAX, use the appropriate values under recommended operating conditions.
All typical values are at VCC = 3.3 V, TA = 25°C.
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
VCC = 3.3 V
± 0.3 V
VCC = 2.7 V
UNIT
MIN
MAX
MIN
MAX
fclock
Clock frequency
0
100
0
83
MHz
t
Pulse duration
PRE or CLR low
4
5
ns
tw
Pulse duration
CLK high or low
5
6
ns
t
Setup time before CLK
↑
Data
3
4
ns
tsu
Setup time before CLK
↑
PRE or CLR inactive
2
3
ns
th
Hold time, data after CLK
↑
1
2
ns
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