參數(shù)資料
型號： SN54LV74AFK
廠商： Texas Instruments, Inc.
英文描述： DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS
中文描述： 雙上升沿觸發(fā)的D型觸發(fā)器
文件頁數(shù)： 5/8頁
文件大?。?/td> 157K
代理商： SN54LV74AFK
SN54LV74A, SN74LV74A
DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS
SCLS381D – AUGUST 1997 – REVISED JUNE 1998
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
timing requirements over recommended operating free-air temperature range, V
CC
= 5 V
±
0.5 V
(unless otherwise noted) (see Figure 1)
PARAMETER
TA = 25
°
C
MIN
5
SN54LV74A
MIN
5
SN74LV74A
MIN
5
UNIT
MAX
MAX
MAX
tw
Pulse duration
PRE or CLR low
ns
CLK
5
5
5
tsu
Setup time before CLK
↑
Data
5
5
5
ns
PRE or CLR inactive
3
3
3
th
Hold time, data after CLK
↑
0.5
0.5
0.5
ns
switching characteristics over recommended operating free-air temperature range,
V
CC
= 2.5 V
±
0.2 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
LOAD
TA = 25
°
C
TYP
100
SN54LV74A
SN74LV74A
UNIT
(OUTPUT)
CAPACITANCE
MIN
50
MAX
MIN
40
MAX
MIN
40
MAX
fmax
CL = 15 pF*
CL = 50 pF
MHz
30
70
25
25
td*
tpd*
PRE or CLR
Q or Q
CL= 15 pF
CL = 15 pF
9.8
14.8
1
17
1
17
ns
CLK
11.1
16.4
1
19
1
19
td
tpd
PRE or CLR
CLK
Q or Q
CL= 50 pF
CL = 50 pF
13
17.4
20
1
1
20
23
1
1
20
23
ns
14.2
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
switching characteristics over recommended operating free-air temperature range,
V
CC
= 3.3 V
±
0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
LOAD
TA = 25
°
C
TYP
140
SN54LV74A
MIN
70
SN74LV74A
MIN
70
UNIT
(OUTPUT)
CAPACITANCE
MIN
80
MAX
MAX
MAX
fmax
CL = 15 pF*
CL = 50 pF
MHz
50
90
45
45
td*
tpd*
PRE or CLR
Q or Q
CL= 15 pF
CL = 15 pF
6.9
12.3
1
14.5
1
14.5
ns
CLK
7.9
11.9
1
14
1
14
td
tpd
PRE or CLR
CLK
Q or Q
CL= 50 pF
CL = 50 pF
9.2
10.2
15.8
15.4
1
1
18
1
1
18
ns
17.5
17.5
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
switching characteristics over recommended operating free-air temperature range,
V
CC
= 5 V
±
0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
LOAD
TA = 25
°
C
TYP
180
SN54LV74A
MIN
110
SN74LV74A
MIN
110
UNIT
(OUTPUT)
CAPACITANCE
MIN
130
MAX
MAX
MAX
fmax
CL = 15 pF*
CL = 50 pF
MHz
90
140
75
75
td*
tpd*
PRE or CLR
Q or Q
CL= 15 pF
CL = 15 pF
5
7.7
1
9
1
9
ns
CLK
5.6
7.3
1
8.5
1
8.5
td
tpd
PRE or CLR
CLK
Q or Q
CL= 50 pF
CL = 50 pF
6.6
7.2
9.7
9.3
1
1
11
1
1
11
ns
10.5
10.5
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
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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