T7507 Quad PCM Codec with Filters,
Termination Impedance, and Hybrid Balance
Data Sheet
August 1999
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
Symbol
Tstg
Min
–55
—
Max
150
Unit
°C
Power Supply Voltage
VDD
—
6.5
V
Voltage on Any Pin with Respect to Ground
Maximum Power Dissipation (package limit)
–0.5
—
0.5 + VDD
600
V
PD
mW
Handling Precautions
Although protection circuitry has been designed into this device, proper precautions should be taken to avoid expo-
sure to electrostatic discharge (ESD) during handling and mounting. Lucent 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
T7507
>2000 V
Electrical Characteristics
Specifications apply for TA = –40 °C to +85 °C, VDD = 5 V ± 5%, MCLK = 2.048 MHz, and GND = 0 V, unless other-
wise noted.
dc Characteristics
Table 8. Digital Interface
Parameter
Input Low Voltage
Symbol
Test Conditions
All digital inputs
All digital inputs
Min Typ Max Unit
VIL
VIH
II
—
—
—
—
—
—
0.8
—
V
V
Input High Voltage
2.0
Input Current
Any digital input GND < VIN < VDD –10
Any digital input GND < VIN < VDD
Any digital input GND < VIN < VDD –2
10
µA
µA
Input Current, Pins with Pull-up (CSEL)
II
2
150
Input Current, Pins with Pull-down
(FSEP, IFS)
II
–150 µA
Output Low Voltage
Output High Voltage
VOL
VOH
DxEN, DX = 3.2 mA
DX = –3.2 mA
DX = –320 µA
DxEN, DX
—
2.4
3.5
–30
—
—
—
—
—
—
0.4
—
—
30
5
V
V
V
Output Current in High-impedance State
Input Capacitance
IOZ
CI
µA
pF
—
Lucent Technologies Inc.
15
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