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PCD4440T

Analog voice scrambler/descrambler

Philips Electronics 

Philips Semiconductors

Analog voice scrambler/descrambler

Product specification

PCD4440T

11 LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

SYMBOL

PARAMETER

VDD

VI

II

IO

Ptot

PO

Tstg

Tamb

supply voltage

all input voltages

DC input current

DC output current

total power dissipation

power dissipation per output

storage temperature

operating ambient temperature

MIN.

−0.3

−0.8

−10

−20

−

−

−65

−25

MAX.

UNIT

+7.0

V

VDD + 0.8 V

+10

mA

+20

mA

300

mW

50

mW

+150

°C

+70

°C

12 CHARACTERISTICS

VDD = 5.0 V; VSS = 0 V; Tamb = 25 °C; all voltages with respect to VSS; fxtal = 3.579 MHz unless otherwise specified.

SYMBOL

PARAMETER

CONDITIONS

MIN. TYP. MAX. UNIT

Supply

VDD

operating supply voltage

IDD

supply current

mute mode

operating mode

Inputs/Outputs: AO, SDA, SCL

VIL

LOW level input voltage

VIH

HIGH level input voltage

Ci

input capacitance

IOL

SDA output current LOW

Signal input: IN

VDC

Vi(P-P)

|Zi|

DC voltage level

allowed amplitude

input impedance

Signal output: OUT

VDC

|Zo|

UFS

DC voltage level

output impedance

unwanted frequency

suppression

Vo/Vi

transfer loss

Oscillator frequency input: OSCI

VDC

DC voltage level

VIL

LOW level input voltage

VIH

HIGH level input voltage

VDD = 3 V

VDD = 3 V

VOL = 0.4 V

frequency = 1 kHz

frequency = 1 kHz

Vi(P-P) = 1.25 V; fS = 767 or 2461 Hz;

fin = 1 kHz; VDD = 3 V or 5 V

transparent mode

operating mode

2.8

−

6.0

V

−

2.2

−

mA

−

13

−

mA

0

−

0.7VDD −

−

−

3.0

−

0.3VDD V

VDD

V

7

pF

−

mA

−

0.5VDD −

V

−

1.25 VDD − 1 V

−

120 −

kΩ

−

0.5VDD −

V

−

−

1

kΩ

35

40

−

dB

−

3.5

−

dB

−

0

−

dB

−

0.5VDD −

V

0

−

0.3VDD V

0.7VDD −

VDD

V

1996 Dec 20

15

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