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SN54HCT377 Datasheet(PDF) 4 Page - Texas Instruments

Part No. SN54HCT377
Description  OCTAL D-TYPE FLIP-FLOPS WITH CLOCK ENABLE
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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SN54HCT377, SN74HCT377
OCTAL D-TYPE FLIP-FLOPS
WITH CLOCK ENABLE
SCLS067D – NOVEMBER 1988 – REVISED MARCH 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
timing requirements over recommended operating free-air temperature range (unless otherwise
noted)
VCC
TA = 25°C
SN54HCT377
SN74HCT377
UNIT
VCC
MIN
MAX
MIN
MAX
MIN
MAX
UNIT
f lk
Clock frequency
4.5 V
25
17
20
MHz
fclock
Clock frequency
5.5 V
30
19
22
MHz
t
Pulse duration
CLK high or low
4.5 V
20
30
25
ns
tw
Pulse duration
CLK high or low
5.5 V
18
28
23
ns
Data
4.5 V
12
18
15
t
Setup time before CLK
Data
5.5 V
10
17
14
ns
tsu
Setup time before CLK
CLKEN high or low
4.5 V
12
18
15
ns
CLKEN high or low
5.5 V
10
17
14
Data
4.5 V
3
3
3
th
Hold time data after CLK
Data
5.5 V
3
3
3
ns
th
Hold time data after CLK
CLKEN inactive or active
4.5 V
5
5
5
ns
CLKEN inactive or active
5.5 V
5
5
5
switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless
otherwise noted) (see Figure 1)
FROM
TO
SN54HCT377
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC
TA = 25°C
MIN
MAX
UNIT
(INPUT)
(OUTPUT)
MIN
TYP
MAX
MIN
MAX
f
4.5 V
25
31
17
MHz
fmax
5.5 V
30
37
19
MHz
t d
CLK
Any
4.5 V
15
30
45
ns
tpd
CLK
Any
5.5 V
12
28
40
ns
tt
Any
4.5 V
8
15
22
ns
tt
Any
5.5 V
6
14
21
ns
switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless
otherwise noted) (see Figure 1)
FROM
TO
SN74HCT377
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC
TA = 25°C
MIN
MAX
UNIT
(INPUT)
(OUTPUT)
MIN
TYP
MAX
MIN
MAX
f
4.5 V
25
31
20
MHz
fmax
5.5 V
30
37
22
MHz
t d
CLK
Any
4.5 V
15
30
38
ns
tpd
CLK
Any
5.5 V
12
28
35
ns
tt
Any
4.5 V
8
15
19
ns
tt
Any
5.5 V
6
14
17
ns
operating characteristics, TA = 25°C
PARAMETER
TEST CONDITIONS
TYP
UNIT
Cpd
Power dissipation capacitance
No load
30
pF
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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