T7503 Dual PCM Codec with Filters
Data Sheet
February 1998
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are
absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in
excess of those given in the operational sections of this data sheet. Exposure to absolute maximum ratings for
extended periods can adversely affect device reliability.
Parameter
Storage Temperature Range
Power Supply Voltage
Voltage on Any Pin with Respect to Ground
Maximum Power Dissipation (package limit)
Symbol
T
stg
V
DD
—
P
D
Min
–55
—
–0.5
—
Max
150
6.5
0.5 + V
DD
600
Unit
°
C
V
V
mW
Handling Precautions
Although protection circuitry has been designed into this device, proper precautions should be taken to avoid
exposure to electrostatic discharge (ESD) during handling and mounting. Lucent Technologies Microelectronics
Group employs a human-body model (HBM) and a charged-device model (CDM) for ESD-susceptibility testing and
protection design evaluation. ESD voltage thresholds are dependent on the circuit parameters used to define the
model. No industry-wide standard has been adopted for CDM. However, a standard HBM (resistance = 1500
Ω
,
capacitance = 100 pF) is widely used and therefore can be used for comparison purposes. The HBM ESD
threshold presented here was obtained by using these circuit parameters:
HBM ESD Threshold Voltage
Device
Rating
T7503
>2000 V
Electrical Characteristics
Specifications apply for T
A
= –40
°
C to +85
°
C, V
DD
= 5 V
±
5%, MCLK = either 2.048 MHz or 4.096 MHz, and
GND = 0 V, unless otherwise noted.
dc Characteristics
Table 2. Digital Interface
Parameter
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
Input Current Pins Without Pull-
down
Input Current Pin with Pull-down
Output Current in High-impedance
State
Input Capacitance
Symbol
V
IL
V
IH
V
OL
V
OH
I
I
I
I
I
OZ
C
I
Test Conditions
All digital inputs
All digital inputs
D
X
, I
L
= 3.2 mA
D
X
, I
L
= –3.2 mA
D
X
, I
L
= –320
µ
A
Any digital input GND < V
IN
< V
DD
Any digital input GND < V
IN
< V
DD
D
X
—
Min
—
2.0
—
2.4
3.5
–10
2
–30
—
Typ
—
—
—
—
—
±
0.01
10
±
0.02
—
Max
0.8
—
0.4
—
—
10
150
30
5
Unit
V
V
V
V
V
µ
A
µ
A
µ
A
pF
4
Lucent Technologies Inc.
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