LXT6251A
—
21 E1 SDH Mapper
42
Datasheet
7.0
Test Specifications
Note:
Minimum and maximum values in tables 9 though 11 represent the performance specifications of
the LXT6251A and are guaranteed by test unless otherwise noted. Minimum and maximum values
in tables 12 though 27 and figures 32 through 45 represent the performance specifications of the
LXT6251A and are guaranteed by design and are not subject to production testing.
Note:
All timing parameters assume that the outputs have a 50 pF load unless otherwise noted.
Table 8. Absolute Maximum Ratings
Parameter
Symbol
Min
Max
Unit
Supply Voltage
V
CC
6.0
V
DC Voltage on any pin
1
V
IN
-2.0
+7.0
V
Ambient operating temperature
T
OP
-40
+85
C
Storage temperature range
T
ST
-65
+150
C
1. Minimum voltage is -0.6V dc which may undershoot to -2.0 V for pulses of less than 20 ns
CAUTION:
Exceeding these values may cause permanent damage.
CAUTION:
Functional operation under these conditions is not implied
CAUTION:
Exposure to maximum rating conditions for extended periods may affect device reliability
Table 9. Operating Conditions
Parameter
Symbol
Min
Typ
1
Max
Unit
Recommended Operating Temperature
TOP
-40
-
+85
C
Supply Voltage - I/O Ring
VCC5
4.75
5
5.25
V
Supply Voltage - Core
VCC3
3.15
3.3
3.45
V
Supply Current - I/O Ring
3
IDD5
-
15
25
mA
Supply Current - Core
3
IDD3
200
250
mA
1. Typical values are at 25C and nominal voltage and are provided for design aid only; not guaranteed nor subject to production
testing
2. Voltages with respect to ground unless otherwise specified
3. STM-1 Terminal mode, PRBS data on all tributaries, outputs loaded, not subject to production testing
Table 10. 5 V Digital I/O Characteristics
Parameter
Symbol
Min
Typ
Max
Units
Test Conditions
TTL Input Low Voltage
VIL
0.8
V
TTL Input High Voltage
VIH
2.0
V
TTL Switching Threshold
VT
1.4
V
VCC-5.0V, 25C
Input Leakage High
IIH
10
uA
VIN-VCC=5.5V
Output Low Voltage
VOL
0.2
0.4
V
VCC=4.5V
Output High Voltage
VOH
0.7xVCC
4.2
VCC=4.5V
Output Leakage (no pull up)
IOZ
-10
10
uA
VIN=VDD=5.5V
1. All values applicable over recommended Voltage and Temperature operating range unless otherwise noted