NSC 100315F

100315
Low-Skew Quad Clock Driver
General Description
The 100315 contains four low skew differential drivers, designed for generation of multiple, minimum skew differential
clocks from a single differential input. This device also has
the capability to select a secondary single-ended clock
source for use in lower frequency system level testing. The
100315 is a 300 Series redesign of the 100115 clock driver.
n
n
n
n
n
Differential inputs and outputs
Secondary clock available for system level testing
2000V ESD protection
Voltage compensated operating range: −4.2V to −5.7V
Standard Microcircuit Drawing
(SMD) 5962-9469601
Features
n Low output to output skew (≤50 ps)
Logic Diagram
DS100319-1
Connection Diagram
Pin Names
Flatpak
Description
CLKIN, CLKIN
Differential Clock Inputs
CLK1–4, CLK1–4
Differential Clock Outputs
TCLK
Test Clock Input (Note 1)
CLKSEL
Clock Input Select (Note 1)
Note 1: TCLK and CLKSEL are single-ended inputs, with internal 50 kΩ pulldown resistors.
DS100319-2
Truth Table
CLKSEL
CLKIN
CLKIN
TCLK
CLKN
CLKN
L
L
H
X
L
H
L
H
L
X
H
L
H
X
X
L
L
H
H
X
X
H
H
L
L = Low Voltage Level
H = High Voltage Level
X = Don’t Care
© 1998 National Semiconductor Corporation
DS100319
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100315 Low-Skew Quad Clock Driver
August 1998
Absolute Maximum Ratings (Note 2)
Operating Range (Note 2)
ESD (Note 3)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
−5.7V to −4.2V
≥2000V
Recommended Operating
Conditions
Above which the useful life may be impaired
Storage Temperature
−65˚C to +150˚C
Maximum Junction Temperature (TJ)
Ceramic
+175˚C
–55˚C to +125˚C
Case Temperature under Bias (TC)
−7.0V to +0.5V
VEE Pin Potential to Ground Pin
Input Voltage (DC)
VCC to +0.5V
Output Current (DC Output HIGH)
−50 mA
Case Temperature (TC)
Military
Supply Voltage (VEE)
−55˚C to +125˚C
−5.7V to −4.2V
Note 2: Absolute maximum ratings are those values beyond which the device may be damaged or have its useful life impaired. Functional operation
under these conditions is not implied.
Note 3: ESD testing conforms to MIL-STD-883, Method 3015.
Military Version
DC Electrical Characteristics
VEE = −4.2V to −5.7V, VCC = VCCA = GND (Note 6)
Symbol
VOH
Typ
Min
Max
Units
TC
−1025
−870
mV
0˚C to
−1085
−870
mV
−55˚C
−1830
−1620
mV
0˚C to
−1830
−1555
mV
−55˚C
−1035
mV
0˚C to
−1085
mV
Voltage
VOL
Output LOW
Output HIGH
VIN = VIH(Max)
or VIL(Min)
Loading with
50Ω to −2.0V
(Notes
4, 5, 6)
+125˚C
Voltage
VOLC
Notes
+125˚C
Voltage
VOHC
Conditions
Parameter
Output HIGH
+125˚C
Output LOW
−1610
−55˚C
mV
VIN = VIH(Min)
or VIL(Max)
0˚C to
Voltage
Loading with
50Ω to −2.0V
(Notes
4, 5, 6)
+125˚C
−1555
mV
−55˚C
DC Electrical Characteristics
VEE = −4.2V to −5.7V, VCC = VCCA = GND (Note 6)
Symbol
VDIFF
Parameter
Input Voltage
Min
Typ
Max
Units
TC
mV
−55˚C to
V
−55˚C to
150
Differential
VCM
Common Mode
+125˚C
VCC − 2.0
VCC − 0.5
Voltage
VIH
Single-Ended
Single-Ended
−1165
−870
mV
−1830
−1475
mV
Input HIGH Current
150
µA
450
µA
CLKSEL
380
µA
−10
µA
Current
IEE
Power Supply
−55˚C to
−55˚C to
+125˚C
−80
−25
mA
Current, Normal
−55˚C to
+125˚C
Notes
(Notes 4, 5,
6)
(Notes 4, 5,
6)
Guaranteed HIGH Signal
for All Inputs
Guaranteed LOW Signal
for All Inputs
VIN = VIH(Max)
+125˚C
TCLK
Input Leakage
−55˚C to
+125˚C
CLKIN, CLKIN
ICBO
−55˚C to
+125˚C
Input Low Voltage
IIH
Output Swing
+125˚C
Input High Voltage
VIL
Conditions
Required for Full
VIN = VEE
(Notes 4, 5,
6, 7)
(Notes 4, 5,
6, 7)
(Notes 4, 5,
6)
(Notes 4, 5,
6)
(Notes 4, 5,
6)
Note 4: F100K 300 Series cold temperature testing is performed by temperature soaking (to guarantee junction temperature equals −55˚C), then testing immediately
without allowing for the junction temperature to stabilize due to heat dissipation after power-up. This provides “cold start” specs which can be considered a worst case
condition at cold temperatures.
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2
DC Electrical Characteristics
(Continued)
Note 5: Screen tested 100% on each device at −55˚C, +25˚C, and +125˚C, Subgroups 1, 2, 3, 7, and 8.
Note 6: Sample tested (Method 5005, Table I) on each manufactured lot at −55˚C, +25˚C, and +125˚C, Subgroups A1, 2, 3, 7, and 8.
Note 7: Guaranteed by applying specified input condition and testing VOH/VOL.
AC Electrical Characteristics
VEE = −4.2V to −5.7V, VCC = VCCA = GND
Symbol
TC = −55˚C
TC = +25˚C
TC = +125˚C
Min
Max
Min
Max
Min
Max
0.58
0.88
0.63
0.88
0.72
0.30
1.60
0.30
1.50
0.30
0.90
0.25
0.85
Parameter
tPLH
Propagation Delay CLKIN,
tPHL
CLKIN to CLK(1–4), CLK(1–4)
tPLH
Propagation Delay, TCLK
tPHL
to CLK(1–4), CLK(1–4)
tS G–G
Skew Gate to Gate (Note 12)
tTLH
Transition Time
tTHL
20% to 80%, 80% to 20%
120
Units
Conditions
Notes
1.02
ns
Figures 1, 2
(Notes 8, 9,
10)
0.40
1.70
ns
120
ps
0.20
0.85
ns
100
(Note 10)
Note 8: F100K 300 Series cold temperature testing is performed by temperature soaking (to guarantee junction temperature equals −55˚C, then testing immediately
after power-up. This provides “cold start” specs which can be considered a worst case condition at cold temperatures.
Note 9: Screen tested 100% on each device at +25˚C temperature only, Subgroup A9.
Note 10: Sample tested (Method 5005, Table I) on each manufactured lot at +25˚C, Subgroup A9, and at +125˚C and −55˚C temperatures, Subgroups A10 and A11.
Note 11: Not tested at +25˚C, +125˚C and −55˚C temperature (design characterization data).
Note 12: Maximum output skew for any one device.
DS100319-3
Note 13: Shown for testing CLKIN to CLK1 in the differential mode.
Note 14: L1, L2, L3 and L4 = equal length 50Ω impedance lines.
Note 15: All unused inputs and outputs are loaded with 50Ω in parallel with ≤3 pF to GND.
Note 16: Scope should have 50Ω input terminator internally.
FIGURE 1. AC Test Circuit
3
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AC Electrical Characteristics
(Continued)
DS100319-4
FIGURE 2. Propagation Delay, TCLK, CLKSEL to Outputs
DS100319-5
FIGURE 3. Propagation Delay, CLKIN/CLKIN to Outputs
DS100319-6
Note 17: The output to output skew, which is defined as the difference in the propagation delays between each of the four outputs on any one 100115 shall not exceed 75 ps.
FIGURE 4. Transition Times
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4
5
100315 Low-Skew Quad Clock Driver
Physical Dimensions
inches (millimeters) unless otherwise noted
16 Lead Ceramic Flatpak (F)
NS Package Number W16A
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