Electronic Components Datasheet Search |
|
MAX1490ACPG Datasheet(PDF) 10 Page - Maxim Integrated Products |
|
MAX1490ACPG Datasheet(HTML) 10 Page - Maxim Integrated Products |
10 / 21 page Complete, Isolated RS-485/RS-422 Data Interface 10 ______________________________________________________________________________________ ________________________________________________________________Pin Description Internal Connections. Leave these pins unconnected. 3, 4 3, 4 Logic-Side (nonisolated side) +5V Supply Voltages 1, 2, 8, 10 1, 2, 8, 10 FUNCTION PIN D1, D2 VCC1–VCC4 NAME Shutdown Input. Ground for normal operation. When high, the power oscillator is disabled. 7 7 Frequency Select Input. If FS = VCC_ or is open, switch frequency is high; if FS = GND, switch frequency is low. For optimal performance and minimal supply current, connect FS to VCC_ or leave unconnected. 6 6 Logic-Side Ground. Connect to GND2 (pin 12). 5 5 SD FS GND1 Logic-Side (non-isolated side) +5V Supply Voltage — 14 Receiver Output. If A > B by 200mV, RO will be low; if A < B by 200mV, RO will be high. Open collector; must have pullup to VCC_ (Table 1 of Figure 1). — 13 Logic-Side Ground. Connect to GND1 (pin 5). 12 12 VCC5 RO GND2 Receiver Output. If A > B by 200mV, RO will be high; if A < B by 200mV, RO will be low. Open collector; must have pullup to VCC (Table 2 of Figure 2). 11 — Driver-Enable Input. The driver outputs, A and B, are enabled by bringing DE ´ high. The driver outputs are high impedance when DE ´ is low. If the driver out- puts are enabled, the device functions as a line driver. While the driver outputs are high impedance, the device functions as a line receiver. Drives internal LED cathode through a resistor (Table 1 of Figure 1). — 11 Driver Input. With DE ´ high (MAX1480A/B/C only), a low on DI´ forces output A low and output B high. Similarly, a high on DI ´ forces output A high and output B low. Drives internal LED cathode through a resistor (Table 1 of Figure 1 for MAX1480A/B/C, Table 2 of Figure 2 for MAX1490A/B). 9 9 RO DE DI Isolated Driver-Input Drive. With DE ´ high (MAX1480A/B/C only), a low on DI´ forces output A low and output B high. Similarly, a high on DI ´ forces output A high and output B low. Connect to ISO DI IN (on the MAX1480A/B/C only) for normal operation. Open-collector output; connect a pullup resistor to ISO VCC_ (Table 1 of Figure 1 for MAX1480A/B/C; Table 2 of Figure 2 for MAX1490A/B). 15 19 Isolated Supply Voltage. Connect to ISO VCC1 (pin 26 for MAX1480A/B/C, or pin 22 for MAX1490A/B). 14 18 Isolated Driver-Enable Drive. The driver outputs, A and B, are enabled by bring- ing DE ´ high. The driver outputs are high impedance when DE´ is low. If the driv- er outputs are enabled, the device functions as a line driver. While the driver outputs are high impedance, the device functions as a line receiver. Open- collector output; must have pullup to ISO VCC_ and be connected to ISO DE IN for normal operation (Table 1 of Figure 1). — 17 ISO DI DRV ISO VCC2 ISO DE DRV Isolated Common. Connect to ISO COM1 (pin 20). — 16 Isolated Receiver Output LED. Internal LED anode in MAX1480A/B/C and LED cathode in MAX1490A/B. Connect to ISO RO DRV through a resistor (Table 1 of Figure 1 for MAX1480A/B/C; Table 2 of Figure 2 for MAX1490A/B). 13 15 Isolated Common. For MAX1480A/B/C, connect to ISO COM2 (pin 16) (Figures 1 and 2). 16 20 ISO COM1 ISO COM2 ISO RO LED MAX1480A/B/C MAX1490A/B PINS ON THE NON-ISOLATED SIDE PINS ON THE ISOLATED RS-485/RS-422 SIDE PINS ON THE NON-ISOLATED SIDE PINS ON THE ISOLATED RS-485/RS-422 SIDE |
Similar Part No. - MAX1490ACPG |
|
Similar Description - MAX1490ACPG |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |