ST3485ECDR STMicroelectronics, ST3485ECDR Datasheet - Page 3

• Manufacturer Part Number: ST3485ECDR
• Description: TXRX RS485/422 3.3V ESD 8-SOIC
• Manufacturer: STMicroelectronics
• Type: Transceiverr

Specifications of ST3485ECDR

• Number Of Drivers/receivers: 1/1
• Protocol: RS422, RS485
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Maximum Operating Temperature: 85 C
• Mounting Style: SMD/SMT
• Data Rate: 15 Mbps
• Interface: RS-422 or RS-485
• Minimum Operating Temperature: - 40 C
• Supply Current: 2.2 mA
• Device Type: Transceiver
• Interface Type: RS422, RS485
• No. Of Drivers: 1
• Supply Voltage Range: 3V To 3.6V
• Driver Case Style: SOIC
• No. Of Pins: 8
• Operating Temperature Range: 0°C To +70°C
• Svhc: No
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6540-2; ST3485ECDR

1
Figure 1.
Table 2.
Pin n°
1
2
3
4
5
6
7
8
Pin configuration
Pin connections
Pin description
Symbol
GND
V
RO
RE
DE
DI
A
B
CC
Receiver output. If A>B by 200mV, RO will be high; if A<B by 200mV, RO will be low
Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE
is high. If RE is high and DE is low, the device will enter a low power shutdown mode.
Driver output enable. The driver outputs are enabled by bringing DE high. They are high
impedance when DE is low. If RE is high DE is low, the device will enter a low-power
shutdown mode. If the driver outputs are enabled, the part functions as line driver, while
they are high impedance, it functions as line receivers if RE is low.
Driver input. 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
Ground
Non-inverting receiver input and non-inverting driver output
Inverting receiver input and inverting driver output
Supply voltage: V
CC
= 3V to 3.6V
Name and function
3/22