XR-T7296 Datasheet, PDF (5/16 Pages) Exar Corporation – DS3/STS-1, E3 Integrated Line Transmitter

XR-T7296
ELECTRICAL CHARACTERISTICS (See Figure 8 )
Test Conditions: V_DD = 5V $5%, T_A = -40°C to +85°C, unless otherwise specified. All timing characteristics
are measured with 10pF loading.
Symbol
Parameter
Min.
Typ.
Max.
Units
AC Electrical Characteristics
TCLK Clock Duty Cycle (DS3 / STS-1)
45
50
55
%
TCLK Clock Duty Cycle (E3)
47
50
53
%
tR
TCLK Clock Rise Time (10% to 90%)
4.0
ns
tF
TCLK Clock Fall Time (10% to 90%)
4.0
ns
tTSU
TPDATA/TNDATA to TCLK Falling Set Up Time
4.0
ns
tTHO TPDATA/TNDATA to TCLK Falling Hold Time
5.0
ns
tTDY
TTIP/TRING to TCLK Rising Propagation Delay ¹
0.6
14
ns
RCLK Clock Duty Cycle
45
50
55
%
tR
RCLK Clock Rise Time (10% to 90%)
4.0
ns
tF
RCLK Clock Fall Time (10% to 90%)
4.0
ns
tRSU RPDATA/RNDATA to RCLK Falling Set Up Time
4.0
ns
tRHO RPDATA/RNDATA to RCLK Falling Hold Time
5.0
ns
tR
RCLKO Clock Rise Time (10% to 90%)
4.0
ns
tF
RCLKO Clock Fall Time (10% to 90%)
4.0
ns
tRDY
RPOS/RNEG/RNRZ to RCLKO Rising Propagation
Delay ²
4.0
ns
DC Electrical Characteristics
V_DDD,
V_DDA
DC Supply Voltage
Supply Current ³
4.75
5
5.25
V
133
mA
V_IL
Input Low Voltage
V_IH
Input High Voltage
V_OL
Output Low Voltage I_OUT=-4.0mA
V_OH
Output High Voltage I_OUT=3.0mA
I_L
Input Leakage Current ⁴
Pin 19/20/26 (Input=0V)
0
V_DD* 0.7
GNDD
V_DDD - 0.5
-50
0.5
V
V_DDD
V
0.4
V
V_DDD
V
$10
µA
-150
µA
C_I
Input Capacitance
C_L
Load Capacitance
10
pF
10
pF
Notes:
1 _{When the encoder is enabled, a handling delay of four and a half TCLK clock cycles for B3ZS and five and half clock cycles for HDB3}
always exists between TPDATA/TNDATA and TTIP/TRING. The handling delay is reduced to two clock cycles when the encoder
is disabled.
2 _{When the decoder is enabled, a handling delay of six and a half RCLK clock cycles will always exist between RPDATA/RNDATA}
and RPOS/RNEG/RNRZ. The handling delay is reduced to one and half RCLK clock cycles when the decoder is disabled.
3 _{Supply current is measured with transmitter sending all ones AMI signal and with Transmit Level (TXLEV) set to high.}
4 _{All inputs except pin 19, 20 and pin 26.}
Specifications are subject to change without notice
Rev. 2.01
5