ISO1176T_1108 Datasheet, PDF (21/27 Pages) Texas Instruments – Isolated Profibus RS-485 Transceiver with Integrated Transformer Driver

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REVISION HISTORY
ISO1176T
SLLSE28E – OCTOBER 2010 – REVISED AUGUST 2011
Changes from Revision initial (October 2010) to Revision A
Page
• Updated transformer driver characteristics ........................................................................................................................... 6
• Added Thermal Table data ................................................................................................................................................. 14
Changes from Revision A (December 2010) to Revision B
Page
• Changed the Steady-state short-circuit output current - Test Conditions and values. ......................................................... 4
• Changed the Oscillator frequency values ............................................................................................................................. 6
• Changed the D1, D2 output rise time values ........................................................................................................................ 6
Changes from Revision B (December 2010) to Revision C
Page
• Added a Typ value of 23ns to Prop delay time for V_CC1 = 5V in the RS-485 DRIVER SWITCHING
CHARACTERISTIC table ...................................................................................................................................................... 5
• Added a Typ value of 25ns to Prop delay time for V_CC1 = 3.3V in the RS-485 DRIVER SWITCHING
CHARACTERISTIC table ...................................................................................................................................................... 5
• Deleted R_OFF from the TRANSFORMER DRIVER CHARACTERISTICS table ................................................................... 6
• Changed θ_JA = 212°C/W To: θ_JA = 76°C/W, Changed the I_S Max value From: 128mA To: 347mA, and changed
paragraph two in the IEC SAFETY LIMITING VALUES section ........................................................................................ 14
• Changed Figure 22 ............................................................................................................................................................. 15
Changes from Revision C (February 2011) to Revision D
Page
• Added Figure 1 ..................................................................................................................................................................... 2
• Moved the Pin Description closer to the Pin drawing ........................................................................................................... 2
Changes from Revision D (May 2011) to Revision E
Page
• Deleted the MIN and MAX values for t_{r_D}, t_{f_D} and t_BBM specifications in the Transformer Driver Characteristics table. ..... 6
• Changed test conditions from 1.9 V to 2.4 V, and changed TYP value from 230 to 350 for f_St specification in the
Transformer Driver Characteristics table. ............................................................................................................................. 6
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