DS21448L+ Maxim Integrated Products, DS21448L+ Datasheet - Page 54
![IC LIU QUAD E1/T1/J1 128-LQFP](/photos/6/82/68247/128-lqfp_21-0086d_sml.jpg)
DS21448L+
Manufacturer Part Number
DS21448L+
Description
IC LIU QUAD E1/T1/J1 128-LQFP
Manufacturer
Maxim Integrated Products
Type
Line Interface Units (LIUs)r
Datasheet
1.DS21448L.pdf
(60 pages)
Specifications of DS21448L+
Number Of Drivers/receivers
4/4
Protocol
T1/E1/J1
Voltage - Supply
3.135 V ~ 3.465 V
Mounting Type
Surface Mount
Package / Case
128-TQFP, 128-VQFP
Product
Framer
Number Of Transceivers
4
Supply Voltage (max)
3.465 V
Supply Voltage (min)
3.135 V
Supply Current (max)
400 mA
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Table 10-D. AC Characteristics—Receive Side
(V
RCLK Period
RCLK Pulse Width
RCLK Pulse Width
Delay RCLK to RPOS, RNEG,
PBEO, RBPV Valid
Note 1: E1 mode.
Note 2: T1 or J1 mode.
Note 3: Jitter attenuator enabled in the receive path.
Note 4: Jitter attenuator disabled or enabled in the transmit path.
Figure 10-9. Receive-Side Timing
DD
= 3.3V ± 5%, T
PARAMETER
RPOS, RNEG
NOTE 1: RCES = 1 (CCR2.0) OR CES = 1.
NOTE 2: RCES = 0 (CCR2.0) OR CES = 0.
NOTE 3: RNEG IS IN NRZ MODE (CCR1.6 = 1).
PBEO
RNEG
(Note 3)
RCLK
(Note 1)
RCLK
(Note 2)
A
=-40°C to +85°C.)
t DD
t DD
ERROR
BIT
(Figure
SYMBOL
t
t
t
t
t
t
CH
CH
DD
BPV/
EXZ/
CV
CP
CL
CL
10-9)
54 of 60
(Note 1)
(Note 2)
(Note 3)
(Note 4)
CONDITIONS
PRBS DETECTOR OUT OF SYNC
t
CL
BPV/
EXZ/
CV
MIN
200
150
t CP
t
CH
TYP
488
648
MAX
50.0
UNITS
ns
ns
ns
ns