mc145425 Freescale Semiconductor, Inc, mc145425 Datasheet - Page 4

• Manufacturer Part Number: mc145425
• Description: Isdn Universal Digital Loop Transceivers
• Manufacturer: Freescale Semiconductor, Inc

NOTE: The slave’s crystal frequency divided by 1024 must equal the master’s MSI frequency
NOTE: To overdrive PD from a low level to 3.5 V, or a high level to 1.5 V requires a minimum of
MC145421 MC145425
4
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED OPERATING CONDITIONS
DIGITAL CHARACTERISTICS
ANALOG CHARACTERISTICS
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
Frame Rate MC145421 (See Note)
MC145421/25 Frame Slip Rate (See Note)
CCI Clock Frequency
TDC/RDC Data Clocks (for Master)
DCLK
Modulation Baud Rate (CCI/16)
Input High Level
Input Low Level
Input Current, V DD
Input Current (Digital Pins)
Input Capacitance
Output High Current (Except Tx on Master and Slave, and PD on the Slave)
Tx Output High Current
PD (Slave) Output High Current (See Note)
Output Low Current (Except Tx on Master and Slave, and PD on Slave)
Tx Output Low Current
PD (Slave) Output Low Current (See Note)
Tx Three–State Impedance
XTL Output High Current
XTL Output Low Current
Modulation Differential Amplitude RL = 880
Modulation Differential DC Offset
V ref Voltage (Typically 9/20
PCM Tone Level
Demodulator Input Amplitude
Demodulator Input Impedance (LI to V ref )
8.192 MHz input at the master divided by 1024 must be within 0.048% of the master’s 8 kHz MSI clock frequency.
Rating
S
Parameter
(V DD – V SS ))
(V DD = 5 V, T A = – 40 to + 85 C)
(V DD = 5 V, T A = 0 to 70 C)
(Voltage Referenced to V SS )
V DD – V SS
Parameter
Parameter
Symbol
(LO1 – LO2)
T stg
T A
V
I
(T A = – 40 to + 85 C)
– 0.5 to V DD + 0.5
– 85 to + 150
– 40 to + 85
– 0.5 to 6.5
Value
10
LO1, LO2
Pins
V DD
MSI
—
—
—
—
Unit
mA
V
V
C
C
V OH = 2.5
V OH = 4.6
V OH = 2.5
V OH = 4.6
V OH = 2.5
V OH = 4.6
V OH = 0.4
V OL = 0.4
V OL = 0.8
V OL = 0.4
V OL = 0.8
V OL = 0.4
0.128
0.016
Min
4.5
—
—
—
—
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 imped-
ance circuit. For proper operation it is recom-
mended that V in and V out be constrained to
the range V SS (V in or V out ) V DD . Reliability
of operation is enhanced if unused inputs are
tied to an appropriate logic voltage level (e.g.,
either V SS or V DD ).
800 A drive capability.
This device contains circuitry to protect the
0.25% for optimum operation. Also, the
– 0.36
– 1.7
– 3.4
– 0.7
0.36
– 22
Min
100
450
Min
3.5
0.8
1.7
3.5
4.6
2.0
8.192
30
50
75
—
—
—
—
—
—
—
Typ
512
5.0
8.0
—
—
—
– 450
Max
– 90
Max
– 18
300
Max
0.25
8.29
1.5
2.5
—
15
10
—
—
—
—
—
—
—
—
60
—
—
—
40
—
5.5
4.1
4.1
—
—
5
MOTOROLA
mVpeak
Vpeak
MHz
MHz
MHz
dBm
Unit
Unit
Unit
kHz
kHz
mA
mA
mA
mA
mA
mV
pF
k
k
%
V
V
V
V
A
A
A
A
A