DS2148T+ Maxim Integrated Products, DS2148T+ Datasheet - Page 16

• Manufacturer Part Number: DS2148T+
• Description: IC LIU E1/T1/J1 5V 44-TQFP
• Manufacturer: Maxim Integrated Products
• Type: Line Interface Units (LIUs)r

Specifications of DS2148T+

• Number Of Drivers/receivers: 1/1
• Protocol: T1/E1/J1
• Voltage - Supply: 4.75 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TTIP/TRING
NAME
TNEG
TCLK
TPOS
TEST
VSM
SDO
V
SDI
V
DD
SS
34/37
21/36
22/35
PIN
43
26
42
41
20
6
7
I/O
O
O
I
I
I
I
I
-
I
-
Serial Data Input. Sampled on rising edge (ICES = 0) or the falling edge
(ICES = 1) of SCLK.
Serial Data Output. Valid on the falling edge (OCES = 0) or the rising
edge (OCES = 1) of SCLK.
Transmit Clock. A 2.048 MHz or 1.544 MHz primary clock. Used to
clock data through the transmit side formatter. Can be sourced internally
by MCLK or RCLK. See Common Control Register 1 and
Tri-State Control. Set high to tri-state all outputs and I/O pins (including
the parallel control port). Set low for normal operation. Useful in board
level testing.
Transmit Negative Data. Sampled on the falling edge (CCR2.1 = 0) or
the rising edge (CCR2.1 = 1) of TCLK for data to be transmitted out onto
the line.
Transmit Positive Data. Sampled on the falling edge (CCR2.1 = 0) or the
rising edge (CCR2.1 = 1) of TCLK for data to be transmitted out onto the
line.
Transmit Tip and Ring . Analog line driver outputs. These pins connect
via a step-up transformer to the line. See Section
5.0V ±5% Positive Supply
Voltage Supply Mode. Should be tied high for 5V operation.
Signal Ground
16 of 73
FUNCTION
5
for details.
Figure
1-3.