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SN888C Datasheet, PDF (3/22 Pages) Texas Instruments – Bus-Polarity Correcting RS-485 Transceiver for E-Meters
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SN888C
www.ti.com
SLLSEI4 – SEPTEMBER 2013
ABSOLUTE MAXIMUM RATINGS(1)
VALUE
UNIT
MIN
MAX
VCC Supply voltage
Input voltage range at any logic pin
Voltage input range, transient pulse, A and B, through 100 Ω
–0.5
7
–0.3
5.7
V
–100
100
Voltage range at A or B inputs
–18
18
Receiver output current
–24
24
mA
Continuous total-power dissipation
See THERMAL INFORMATION table
IEC 61000-4-2 ESD (Contact Discharge), bus terminals and GND
±12
IEC 61000-4-4 EFT (Fast transient or burst) bus terminals and GND
±4
IEC 60749-26 ESD (HBM), bus terminals and GND
±16
kV
Test Method A114 (HBM), all pins
±8
JEDEC Standard 22
Test Method C101 (Charged Device Model), all pins
±1.5
Test Method A115 (Machine Model), all pins
±200
V
TJ
TSTG
Junction temperature
Storage temperature
170
°C
–65
150
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
THERMAL INFORMATION
THERMAL METRIC(1)
SN888C
PACKAGE SOIC
(D)
UNITS
θJA
θJCtop
θJB
ψJT
ψJB
θJCbot
Junction-to-ambient thermal resistance
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance(2)
Junction-to-top characterization parameter
Junction-to-board characterization parameter
Junction-to-case (bottom) thermal resistance
116.1
60.8
57.1
13.9
56.5
NA
°C/W
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
(2) The junction-to-board thermal resistance is obtained by simulating in an environment with a ring cold plate fixture to control the PCB
temperature, as described in JESD51-8.
POWER DISSIPATION
PARAMETER
Power dissipation
Unterminated
Driver and receiver enabled,
PD
VCC = 5.5 V, TJ = 150°C
RS-422 load
50% duty cycle square-wave signal at
250-kbps signaling rate:
RS-485 load
TEST CONDITIONS
RL = 300 Ω,
CL = 50 pF (driver)
RL = 100 Ω,
CL = 50 pF (driver)
RL = 54 Ω,
CL = 50 pF (driver)
VALUE
164
247
316
UNITS
mW
Copyright © 2013, Texas Instruments Incorporated
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