Datasheet ADUM1234 (Analog Devices) - 7

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Data Sheet ADuM1234 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS VIA 1 16 VDDA VIB 2 15 VOA VDD1 3 14 GNDA ADuM1234 GND1 4 13 NC TOP VIEW DISABLE 5 (Not to Scale) 12 NC NC 6 11 VDDB NC 7 10 VOB VDD1 8 9 GNDB
002
NC = NO CONNECT
06920- Figure 3. Pin Configuration
Table 9. Pin Function Descriptions Pin No. Mnemonic Description
1 VIA Logic Input A. 2 VIB Logic Input B. 3, 8 VDD1 Input Supply Voltage, 4.5 V to 5.5 V. Pin 3 and Pin 8 are internally connected. Connecting both pins to VDD1 is recommended. 4 GND1 Ground Reference for Input Logic Signals. 5 DISABLE Input Disable. Disables the isolator inputs and refresh circuits. Outputs take on default low state. 6, 7, 12, 13 NC No Connect. Pin 12 and Pin 13 are floating and should be left unconnected. 9 GNDB Ground Reference for Output B. 10 VOB Output B. 11 VDDB Output B Supply Voltage, 12 V to 18 V. 14 GNDA Ground Reference for Output A. 15 VOA Output A. 16 VDDA Output A Supply Voltage, 12 V to 18 V.
Table 10. Truth Table (Positive Logic) VIA/VIB Input VDD1 State DISABLE VOA/VOB Output Notes
High Powered Low High Low Powered Low Low X1 Unpowered X1 Low Output returns to input state within 1 µs of VDD1 power restoration. X1 Powered High Low 1 X is don’t care. Rev. A | Page 7 of 12 Document Outline Features Applications General Description Functional Block Diagram Table of Contents Revision History Specifications Electrical Characteristics Package Characteristics Regulatory Information Insulation and Safety-Related Specifications DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 Insulation Characteristics Recommended Operating Conditions Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Perfomance Characteristics Applications Information Common-Mode Transient Immunity Insulation Lifetime Outline Dimensions Ordering Guide