CGS74CT2524 [TI]
CGS74CT2524 1 to 4 Minimum Skew (300 ps) Clock Driver; CGS74CT2524 1至4最小歪斜（ 300 PS ）时钟驱动器
| 型号： | CGS74CT2524 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | CGS74CT2524 1 to 4 Minimum Skew (300 ps) Clock Driver |
| 文件： | 总8页 (文件大小：349K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CGS74CT2524
CGS74CT2524 1 to 4 Minimum Skew (300 ps) Clock Driver
Literature Number: SNOS683A
September 1995
CGS74CT2524
1 to 4 Minimum Skew (300 ps) Clock Driver
General Description
Features
Y
Guaranteed 300 ps pin-to-pin skew (t
and t
)
OSLH
These minimum skew clock drivers are designed for Clock
Generation and Support (CGS) applications operating at
high frequencies. This device guarantees minimum output
skew across the outputs of a given device.
OSHL
Y
Implemented on National’s FACTTM family process
Y
Y
Y
Y
Y
Y
1 input to 4 outputs low skew clock distribution
Symmetric output current drive: 24 mA I /I
OH OL
a
Industrial temperature of 40 C to 85 C
Skew parameters are also provided as a means to measure
duty cycle requirements as those found in high speed clock-
ing systems. The CGS74CT2524 is a minimum skew clock
driver with one input driving four outputs, specifically de-
signed for signal generation and clock distribution applica-
tions.
b
§
§
8-pin SOIC package
Low dynamic power consumption above 20 Hz
Guaranteed 2 kV ESD protection
Logic Symbol
Connection Diagrams
nment
C (M)
TL/F/11752–1
TL/F/11752–2
The output pins act as a single entity and will follow the state of the CLK
when the clock distribution chip is selected.
Pin Description
Pin Names
Dn
CLK
O –O
0
3
Truth Tab
Inp
Outputs
TL/F/11752–3
CL
O –O
0
3
L
L
H
H
e
e
L
Low Logic Level
High Logic Level
H
FACTTM is a trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation
TL/F/11752
RRD-B30M115/Printed in U. S. A.
Absolute Maximum Ratings (Note)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Recommended Operating
Conditions
Supply Voltage (V
)
CC
4.5V to 5.5V
Input Voltage (V )
I
0V to V
0 to V
CC
b
0.5V to (V
0.5V to (V
Supply Voltage (V
)
0.5 to 7.0V
CC
Output Voltage (V
)
O
CC
DC Input Voltage Diode Current (I
)
IK
b
a
40 C to 85 C
Operating Temperature (T )
A
§
§
e b
e
b
a
V
V
0.5V
a
20 mA
20 mA
Input Rise and Fall Times
(0.8V to 2.0V)
V
0.5V
CC
9.6 ns max
b
b
a
0.5V)
DC Input Voltage (V )
I
CC
NOTE: The Absolute Maximum Ratings are those values
beyond which the safety of the device cannot be guaran-
teed. The device should not be operated at these limits. The
parametric values defined in the DC and AC Electrical Char-
acteristics tables are not guaranteed at the absolute maxi-
mum ratings. The Recommended Operating Conditions will
define the conditions for actual device operation.
DC Output Diode (Current) (I
)
O
e b
b
a
V
V
0.5V
a
20 mA
20 mA
e
V
CC
0.5V
a
DC Output Voltage (V
DC Output Source
)
O
0.5V)
50 mA
50 mA
CC
g
g
or Sink Current (I
)
O
DC V
or Ground Current
CC
per Output Pin (I or I
CC
)
GND
)
b
a
Storage Temperature (T
65 C to 150 C
§
§
500 LFM
STG
Junction Temperature (i
)
JA
0
225
132
79
M
N
167
115
117 C/W
§
62 C/W
§
DC Electrical Characteristics
Over recommended operating conditions unless specified otherwise.
CGS74CT2524
e b a
4to 85
V
CC
e a
Symbol
Parameter
nits
Conditions
T
A
25 C
§
T
A
(V)
Typ
Guaranteed Lim
e
V
V
V
Minimum High Level
Input Voltage
4.5
5.5
1.5
1.5
2.0
2.0
2.0
V
0.1V
e b
IH
OUT
V
V
or V
0.1V
0.1V
CC
e
Maximum Low Level
Input Voltage
4.5
5.5
1.5
1.5
0.8
0.8
V
OUT
or V
0.1V
e b
IL
CC
e
V
IH
e b
Minimum High Level
Output Voltage
4.5
5.5
4.49
5.49
4.4
V
IN
OH
V
I
50 mA
OUT
e
V
4.5
5.5
3.86
3.76
4.76
V
IN
IH
e b
V
I
24 mA
OH
e
V
IL
V
OL
Minimum Low Level
Output Voltage
4.5
0
0.1
0.1
0.1
0.1
V
IN
V
e
I
50 mA
OUT
e
V
4.5
5.5
6
6
0.44
0.44
V
IN
IL
V
e
I
24 mA
OL
e
I
Maximum I
Leakage
V
V
, GND
IN
I
CC
g
g
0.1
1.0
1.5
75
mA
e
b
2.1V
I
I
I
I
Maximum
0.6
mA
mA
mA
V
V
V
V
V
CC
CC
I
T
e
Minimum
Output Curr
1.65V Max
e
3.85V Min
OLD
OHD
CC
OLD
OHD
b
75
e
Maximum Quiescent
Supply Current
V
CC
IN
5.5
8.0
80
mA
or GND
2
AC Electrical Characteristics
Over recommended operating conditions unless specified otherwise. All typical values are measured at V
e
e
25 C.
5V, T
A
§
CC
CGS74CT2524
e
V
4.5V to 5.5V
a
CC
e b
T
40 C to 85 C
§
§
A
Symbol
Parameter
Units
e
C
50 pF
L
e
R
500X
L
Min
Typ
Max
t
t
Low-to-High Propagation Delay
PLH
3.5
9.0
9.0
ns
ns
CLK to O
n
High-to-Low Propagation Delay
CLK to O
PHL
3.5
n
Extended AC Electrical Characteristics
Over recommended operating conditions unless specified otherwise. All typical values are measured at V
e
25 C.
V, T
A
§
CGS74CT2524
e
V
4.5V 5.5V
CC
e b
T
40 C to C
§
A
Symbol
Parameter
Units
e
C
50 p
L
e
R
500X
L
Package
M
Typ
ax
F
Maximum Operating Frequency
100
MHz
ps
max
t
t
t
Maximum Skew Common Edge
M
M (Note 2)
N
300
450
500
OSHL
Output-to-Output Variation (Note 1)
Maximum Skew Common Edge
300
450
500
OSLH
PS
Output-to-Output Variation (Note 1)
ps
Maximum Skew Pin (Signal)
Transition Variation (Note 3)
1.0
1.5
ns
ns
t
t
Rise Time/Fall Time
rise
(from 0.8V to 2.0V/2.0V to 0.8
fall
T
T
Time High
Time Low
4
4
ns
ns
High
Low
Note 1: Output-to-Output Skew is defined he difference between the actual propagation delay from any outputs within the same packaged
device. The specifications apply to any outpue direction either HIGH to LOW (t
@
re characeed by design 1 MHz.
) or LOW to HIGH (t
) or in opposite directions both
OSLH
OSHL
HL and LH (t
). t
OST OS
Note 2: Characterter guarasign.
Note 3: Pin tranfference een High-to-Low and Low-to-High propagation delay measure at a given output pin.
Note 4: Load c
3
Timing Diagrams
1 to 4 Min-Skew Clock Driver
TL/F/11752–4
TL/F/11752–5
TL/F/11752–13
Time high is measured we 2V.
Time low is measured with 0.8V.
Test Circuit
R
is 500X
is 50 pF for all prop delays and skew measurements.
L
C
L
TL/F/11752–6
4
Ordering Information
Contact NSC Marketing for specific data of availability
TL/F/11752–14
5
Physical Dimensions inches (millimeters)
8 Lead (0.150 Wide) Molded Small Outline Pkage (
×
NS Package Number M08A
LIFE SUPPORT
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support device or system whose failure to perform can
be reasonably expected to cause the failure of the life
support device or system, or to affect its safety or
effectiveness.
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a
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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
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