CS61884
54 DS485F3
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 (V
OH
= 2.4 V @ I
OUT
= -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
4.0
V
V
DC Supply VCCIO -0.5 4.6 V
Input Voltage, Any Digital Pin except CBLSEL, MODE and
LOOP(n) pins (referenced to GNDIO = 0V)
V
IH
GNDIO -0.5 5.3 V
Input Voltage CBLSEL, MODE & LOOP(n) Pins
(referenced to GNDIO = 0V)
V
IH
GNDIO -0.5 VCCIO +0.5 V
Input voltage, RTIP and RRING Pins TGND -0.5 TV+ +0.5 V
ESD voltage, Any pin Note 1 2k - V
Input current, Any Pin Note 2 I
IH
-10 +10 mA
Maximum Power Dissipation, In package P
p
-1.73W
Ambient Operating Temperature T
A
-40 85 C
Storage Temperature T
stg
-65 150 C
Parameter Symbol Min. Typ Max Units
DC Supply RV+, TV+ 3.135 3.3 3.465 V
DC Supply VCCIO 3.135 3.3 3.465 V
Ambient operating Temperature T
A
-40 25 85 C
Power Consumption, T1/J1 Mode, 100 Ω line load Notes 3, 4, 5
-
- 970 1900 mW
Power Consumption, E1 Mode, 75 Ω line load Notes 3, 4, 5
-
- 810 1400 mW
Power Consumption, E1 Mode, 120 Ω line load Notes 3, 4, 5
-
- 750 1300 mW
