MC145745FW Freescale, MC145745FW Datasheet - Page 4

• Manufacturer Part Number: MC145745FW
• Manufacturer: Freescale

Specifications of MC145745FW

• Main Category: Single Chip
• Power Supply Type: Analog
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Commercial
• Pin Count: 28
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Supplier Unconfirmed

MC145745
4
PIN DESCRIPTIONS (continued)
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED OPERATIONAL CONDITIONS
DC ELECTRICAL CHARACTERISTICS
DC Supply Voltage
DC Input Voltage
DC Output Voltage
DC Input Current
DC Output Current
Power Dissipation
Storage Temperature Range
DC Supply Voltage
DC Input Voltage
DC Output Voltage
Crystal Oscillation Frequency
External Input Frequency (ECLK)
Operating Temperature Range
Input Voltage
(TxD, ECLK, RESET,
(
SCP R
SCP Rx, SCPCLK,
SCPEN)
Output Voltage
(RxD CD CLKO
(RxD, CD, CLKO,
PB0–3, SCP Tx)
Input Leakage Current
(TxD, ECLK, RESET, SCP Rx,
SCPCLK, SCPEN)
Quiescent Supply
Current
Power–Down Supply Current
Location
Pin
25
26
27
SCPCLK
Characteristic
Symbol
TxA2
TxA1
Rating
RxA
High Level
Low Level
High Level
Low Level
V CC = 5 V
V CC = 3.6 V
Type
O
O
Parameter
I
Transmit Buffer Output 2 (Inverting) — This pin is the inverting output of the line driver. When V CC =
5 V, + 7 dBm (typ), differential output voltage (V TxA1 – V TxA2 ), can be obtained with a load of 1.2 k
between pins TxA1 and TxA2. In typical applications, the output level on the telephone line will be half
of the differential output (refer to Application Circuit).
Transmit Buffer Output 1 (Non–Inverting) — This pin is the non–inverting output of the line driver.
Refer to TxA2.
Receive Signal Input — This pin is the analog signal input which has 500 k input resistance (typ).
Symbol
V OH
Symbol
V OL
I CC
I CC
I CC
V IH
V IL
I in
V CC
V out
T stg
(V CC = + 3.3 to + 5.5 V, T A = – 30 to + 85 C)
I out
V in
P D
I in
V in = V IH or V IL , I out = 20 A
V in = V IH or V IL
V in = V CC or GND
FSK Mode, RTLA = 0
TxA1 and TxA2 open
DTMF Receive Mode, no input
FSK Mode, RTLA = 0
TxA1 and TxA2 open
DTMF Receive Mode, no input
Power–Down Mode 1
Power–Down Mode 2
– 0.5 to V CC + 0.5
– 0.5 to V CC + 0.5
I out = 20 A
I out = 2 mA
– 0.5 to + 7.0
– 65 to + 150
Conditions
Value
500
20
25
Symbol
V CC
V out
f osc
V in
T A
Unit
mW
mA
mA
Description
V
V
V
C
V CC – 0.1
0.7 x V CC
– 30
Min
Min
3.3
—
—
—
—
—
—
—
—
—
—
—
—
0
0
inputs against damage due to high static
voltages or electric fields. However, it is advised
that normal precautions be taken to avoid ap-
plications 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 GND
V out )
logic inputs are tied to an appropriate logic volt-
age level (e.g., either GND or V CC ).
This device contains circuitry to protect the
Reliability of operation is enhanced if unused
v
V CC – 0.01
V CC .
3.579545
7.15909
0.01
Typ
Typ
5.0
25
—
—
—
—
—
—
—
1.0
7
9
6
8
V CC
V CC
Max
+ 85
Max
500
5.5
1.1
0.1
0.4
1.0
10.0
—
—
—
—
—
—
—
—
MOTOROLA
v
MHz
Unit
Unit
mA
(V in or
V
V
V
V
C
A
A
A