CS61884 datasheet(54/72 Pages) CIRRUS

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CS61884

DS485PP4

19. CHARACTERISTICS AND SPECIFICATIONS

19.1 Absolute Maximum Ratings

CAUTION: Operations at or beyond these limits may result in permanent damage to the device. Normal operation

is not guaranteed at these extremes.

19.2 Recommended Operating Conditions

Notes: 1. Human Body Model

2. Transient current of up to 100 mA will not cause SCR latch-up. Also TTIP, TRING, TV+ and TGND can

withstand a continuous current of 100 mA.

3. Power consumption while driving line load over the full operating temperature and power supply voltage

range. Includes all IC channels and loads. Digital inputs are within 10% of the supply rails and digital

outputs are driving a 50pF capacitive load.

4. Typical consumption corresponds to 50% ones density for E1/T1/J1 modes and medium line length

setting for T1/J1 mode at 3.3Volts.

5. Maximum consumption corresponds to 100% ones density for E1/T1/J1 modes and maximum line

length settings for T1/J1 mode at 3.465Volts.

6. This specification guarantees TTL compatibility (VOH =2.4 V @ IOUT = -400 µA).

7. Output drivers are TTL compatible.

8. Pulse amplitude measured at the output of the transformer across a 75

Ω load.

9. Pulse amplitude measured at the output of the transformer across a 120

Ω load.

10. Pulse amplitude measured at the output of the transformer across a 100

Ω load for all line length

settings.

Parameter

Symbol

Min.

Max

Units

DC Supply

(referenced to RGND = TGND = 0V)

RV+

TV+

4.0

DC Supply

VCCIO

-0.5

4.6

Input Voltage, Any Digital Pin except CBLSEL, MODE and

LOOP(n) pins

(referenced to GNDIO = 0V)

VIH

GNDIO -0.5

5.3

Input Voltage CBLSEL, MODE & LOOP(n) Pins

(referenced to GNDIO = 0V)

VIH

GNDIO -0.5

VCCIO +0.5

Input voltage, RTIP and RRING Pins

TGND -0.5

TV+ +0.5

ESD voltage, Any pin

Note 1

Input current, Any Pin

Note 2

IIH

-10

+10

Maximum Power Dissipation, In package

-1.73

Ambient Operating Temperature

-40

Storage Temperature

Tstg

-65

150

Parameter

Symbol

Min.

Typ

Max

Units

DC Supply

RV+, TV+

3.135

3.3

3.465

DC Supply

VCCIO

3.135

3.3

3.465

Ambient operating Temperature

-40

Power Consumption, T1/J1 Mode, 100

Ω line load

Notes 3, 4, 5

970

1900

Power Consumption, E1 Mode, 75

Ω line load

Notes 3, 4, 5

810

1400

Power Consumption, E1 Mode, 120

Ω line load

Notes 3, 4, 5

750

1300

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