MC145423EG Freescale Semiconductor, MC145423EG Datasheet

MC145423EG

Manufacturer Part Number
MC145423EG
Description
Manufacturer
Freescale Semiconductor
Datasheet

Specifications of MC145423EG

Number Of Transmitters
1
Number Of Receivers
1
Power Supply Requirement
Single
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
28
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Dual Supply Voltage (typ)
Not RequiredV
Dual Supply Voltage (max)
Not RequiredV
Dual Supply Voltage (min)
Not RequiredV
Lead Free Status / Rohs Status
Compliant
MC145423
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED OPERATING CONDITIONS
4
DC Supply Voltage
Voltage, Any Pin to V SS
DC Current, Any Pin (Excluding
V DD , V SS )
Operating Temperature
Storage Temperature
DC Supply Voltage
Power Dissipation (PD = V DD )
Power Dissipation (PD = V SS )
Frame Rate
CCI CLK Frequency (MSI = 8 kHz)
Frame Rate Slip*
Data Clock Rate (Master Mode)
SDCLK (UDLT-2 Only)
Modulation Baud Rate
* The slave’s crystal frequency divided by 512 (UDLT-1) or 1024 (UDLT-2), must equal the master’s MSI frequency ±0.25% for optimum
operation.
UDLT-1 (CCI = 256 x MSI)
UDLT-2
UDLT-1
UDLT-2
UDLT-1
UDLT-2
Rating
Parameter
Freescale Semiconductor, Inc.
V DD – V SS
Symbol
For More Information On This Product,
T stg
T A
V
I
V DD = 5 V
V DD = 5 V
(Voltage Referenced to V SS )
Go to: www.freescale.com
TELECOMMUNICATIONS
–0.5 to V DD + 0.5
–85 to 150
–40 to 85
–0.5 to 6
Value
±10
(T A = –40° to 85°C)
TDC-RDC
LO1, LO2
Pins
V DD
V DD
V DD
MSI
CCI
Unit
mA
°C
°C
V
V
MOTOROLA
Semiconductor Products Sector
Product Preview
Universal Digital Loop
Transceiver (UDLT-3)
Pin Selectable Master/Slave
Limited Distance Modem
of the major building blocks in digital subscriber voice/da
telephone systems and remote data acquisition and contro
the MC145421 (ISDN UDLT-2 master), MC145425 (ISDN
slave), MC145422 (UDLT-1 master), and MC145426 (UD
slave).
can be used in telephone switch line cards, as well as rem
telsets or data terminals.
UDLT-2 Features
UDLT-1 Features
This document contains information on a product under development. Motorola
reserves the right to change or discontinue this product without notice.
© Motorola, Inc., 2000. All rights reserved.
Min
128
4.5
7.9
64
16
The MC145423 is a CMOS integrated circuit designed
The UDLT-3 incorporates into one device, all the funct
Since these modes/functions are pin selectable, the MC
V DD = 4.5 V to 5.5 V
28-Pin SOIC and TSSOP Packages
Protocol Independent
Pin Controlled Power-Down
LI Sensitivity Control in Master Mode
2.048 MHz Output in Slave Mode
Synchronous Full Duplex 160 kbps Voice and Data
Communications in a 2B+2D Format for ISDN Compa
Provides CCITT Basic Access Data Transfer Rate (2B+
ISDNs on a Single Twisted Pair Up to 1 km on 26 AW
Larger Cable
Pin Controlled Loopback
Automatic Power-Up/Down (Slave)
Full Duplex Synchronous 64 kbps Voice/Data Channel
8 kbps Signaling Data Channels Over One 26 AWG Wi
to 2 km
the inputs against damage due to high static
voltages or electric fields; however, it is
advised that normal precautions be taken
to avoid applications of any voltage higher
than maximum rated voltages to this high-
impedance circuit. For proper operation, it
is recommended that V in and V out be
constrained to the range V SS
if unused inputs are tied to an appropriate
logic level (e.g., either V SS or V DD ).
V DD . Reliability of operation is enhanced
This device contains circuitry to protect
2.048
8.192
Typ
8.0
4100
4100
4100
Max
8.29
0.25
256
512
5.5
8.1
80
80
(V in or V out )
MHz
Unit
mW
mW
kHz
kHz
kHz
kHz
%
V

Related parts for MC145423EG

MC145423EG Summary of contents

Page 1

... Freescale Semiconductor, Inc. MC145423 ABSOLUTE MAXIMUM RATINGS Rating Symbol DC Supply Voltage V DD – Voltage, Any Pin Current, Any Pin (Excluding Operating Temperature T A Storage Temperature T stg RECOMMENDED OPERATING CONDITIONS Parameter DC Supply Voltage Power Dissipation ( Power Dissipation ( Frame Rate CCI CLK Frequency (MSI = 8 kHz) ...

Page 2

... Freescale Semiconductor, Inc. MC145423 FRAME 10/20 SDCLK/8kHz MOD TRI/SQ For More Information On This Product, 2 PIN ASSIGNMENT ref 2 27 MASTER/SLAVE LO1 LO2 SDI1 6 23 RE2/BCLK SDI2 7 22 RE1/CLKOUT SENS/2.048 MHz 9 20 TDC-RDC/XTAL out SDO1 10 19 CCI/XTAL in SDO2 11 18 MSI/TONE SE/(Mu/ EN1-TE1 PD 13 ...

Page 3

... Freescale Semiconductor, Inc. MC145423 Figure 1. UDLT-1 Slave Timing Nonsynchronous For More Information On This Product, 8 DIGITAL CHARACTERISTICS Input High Level Input Low Level Input Current (Digital Pins) Input Current LI Input Capacitance Output High Current (Excluding Tx and PD) Output Current Low (Excluding Tx and PD) ...

Page 4

... Freescale Semiconductor, Inc. MC145423 MASTER SWITCHING CHARACTERISTICS Parameter Input Rise Time: All Digital Inputs Input Fall Time: All Digital Inputs Pulse Width: TDC, RDC, RE1, RE2, MSI, SDCLK (UDLT-2) CCI Duty Cycle Propagation Delay: MSI to SDO1, SDO2 MSI, TE1, TE2, RE1, RE2 to TDC-RDC Setup Time ...

Page 5

... Freescale Semiconductor, Inc. MC145423 For More Information On This Product, 12 Figure 5. UDLT-2 Master Timing TELECOMMUNICATIONS Go to: www.freescale.com Figure 2. UDLT-1 Slave TELECOMMU ...

Page 6

... Freescale Semiconductor, Inc. MC145423 For More Information On This Product, 10 Figure 3. UDLT-2 Slave Timing TELECOMMUNICATIONS Go to: www.freescale.com Figure 4. UDLT-1 TELECOMMU ...

Page 7

... Freescale Semiconductor, Inc. MC145423 MC145423 UDLT-3 PIN STATES FOR UDLT-1 SLAVE MODE (continued) UDLT-1 Slave Mode MC145423 Pin Pin No. Name In/out Normal 23 RE2/ Output BCLK = BCLK 128 kHz 24 Rx Input 64 kbps Data In 25 LO2 Output Modulator Out 26 LO1 Output Modulator Out ...

Page 8

... Freescale Semiconductor, Inc. MC145423 SOIC PACKAGE PINOUT COMPARISON UDLT-3 PINOUT VERSUS MC145421DW/22DW/25DW/26DW (UDLT-1/UDLT-2 MASTER/SLAVE) PINOUT UDLT-3 UDLT-1 Master MC145423 MC145422 Pin Pin Pin Pin No. Name No. Name ref 2 V ref SDI1 7 SI1 7 SDI2 9 SI2 8 FRAME 10/20 Logic 0 9 SDCLK/8kHz High Impedance 10 SDO1 ...

Page 9

... Freescale Semiconductor, Inc. MC145423 PIN DESCRIPTIONS V SS Negative Supply (Pin 1) This is the most negative power pin, and should be tied to system ground (0 V). V ref Voltage Reference Output (Pin 2) This is the output from the internal reference supply (mid-supply) and should be bypassed to both V SS and V DD with 0 ...

Page 10

... Freescale Semiconductor, Inc. MC145423 MC145423 UDLT-3 PIN STATES FOR UDLT-2 SLAVE MODE (continued) UDLT-2 Slave Mode MC145423 Pin Pin No. Name In/out Normal 10 SDO1 Output 16 kbps Data Out 11 SDO2 Output 16 kbps Data Out 12 SE/ Input 1/0 (Mu/ MOD Input 1 TRI/ Output ...

Page 11

... Freescale Semiconductor, Inc. MC145423 data buffer with data from the Rx pin on the next eight falling edges of the TDC-RDC clock. The RE1 and RE2 enables should be roughly leading edge aligned with the TDC-RDC data clock. These enables are rising edge sensitive and need not be high for the entire B channel input period ...

Page 12

... Freescale Semiconductor, Inc. MC145423 250 s have elapsed without a burst from the master being successfully demodulated. This allows the slave device to self power-up and power-down in demand powered loop systems. When held low, the device powers down and the only active circuitry, is that which is necessary for the demodulation of data ...

Page 13

... Freescale Semiconductor, Inc. MC145423 E PIN 1 e/2 2X INDEX 26X TOP VIEW 0.05 (D) A 28X SIDE VIEW For More Information On This Product SUFFIX TSSOP PACKAGE CASE 1168- 0 END 2X 14 TIPS VIEW A e VIEW 28X 0.2 A SEATING PLANE GAGE PLANE A1 A2 0.25 L VIEW A TELECOMMUNICATIONS Go to: www ...

Page 14

... Freescale Semiconductor, Inc. MC145423 MULTICHANNEL DIGITAL LINE CARD POWER SUPPLY TIP RING POWER SUPPLY TIP RING For More Information On This Product MSI/TONE A LO1 Tx V ref Rx TDC/RDC/XTAL out LO2 CCI/XTAL SDI1 UDLT-3 MASTER RE1/CLKOUT SDI2 MODE EN1-TE1 (I/O) SDO1 EN2-TE2(I/O)/SIE SDO2 ...

Page 15

... Freescale Semiconductor, Inc. Digital DNA is a trademark of Motorola, Inc. Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “ ...

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