MAX4825EUP Maxim Integrated Products, MAX4825EUP Datasheet - Page 7

• Manufacturer Part Number: MAX4825EUP
• Description: MOSFET & Power Driver ICs
• Manufacturer: Maxim Integrated Products

Specifications of MAX4825EUP

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

MAX4822
10, 16
11
12
13
14
15
17
18
1
2
3
4
5
6
7
8
9
+3.3V/+5V, 8-Channel Relay Drivers with Fast
PIN
MAX4823
10, 16
6, 13
11
12
14
15
17
18
—
_______________________________________________________________________________________
1
2
3
4
5
7
8
9
Recovery Time and Power-Save Mode
RESET
PSAVE
NAME
PGND
DOUT
SCLK
OUT8
OUT7
OUT6
OUT5
OUT4
OUT3
OUT2
OUT1
GND
N.C.
DIN
CS
Reset Input. Drive RESET low to clear all latches and registers (all outputs are high
impedance). RESET overrides all other inputs. If RESET and SET are pulled low at the
same time, then RESET takes precedence.
Chip-Select Input. Drive CS low to select the device. When CS is low, data at DIN is
clocked into the shift register on SCLK’s rising edge. Drive CS from low to high to latch
the data to the registers and activate the relay outputs.
Serial Data Input
Serial Clock Input
Serial Data Output. DOUT is the output of the shift register. DOUT can be used to daisy-
chain multiple MAX4822/MAX4823 devices. The data at DOUT appears synchronous to
SCLK’s falling edge.
No Connection. Not internally connected.
Ground
Open-Drain Output 8. Connect OUT8 to the low side of a relay coil. This output is pulled
to PGND when activated, but otherwise is high impedance.
Open-Drain Output 7. Connect OUT7 to the low side of a relay coil. This output is pulled
to PGND when activated, but otherwise is high impedance.
Power Ground. PGND is a return for the output sinks. Connect PGND pins together and
to GND.
Open-Drain Output 6. Connect OUT6 to the low side of a relay coil. This output is pulled
to PGND when activated, but otherwise is high impedance.
Open-Drain Output 5. Connect OUT5 to the low side of a relay coil. This output is pulled
to PGND when activated, but otherwise is high impedance.
Power-Save Control. Connect a timing capacitor from PSAVE to ground. The capacitor
value determines power-save timing as explained under the Applications Information
section. PSAVE can also be driven externally to control power-save mode
asynchronously. When asserted high, PSAVE reduces the current to all active outputs as
determined by the Power-Save Configuration Register (see Figure 1). To disable power-
save mode in all channels, drive PSAVE low for at least 3ms after the last output setting.
Open-Drain Output 4. Connect OUT4 to the low side of a relay coil. This output is pulled
to PGND when activated, but otherwise is high impedance.
Open-Drain Output 3. Connect OUT3 to the low side of a relay coil. This output is pulled
to PGND when activated, but otherwise is high impedance.
Open-Drain Output 2. Connect OUT2 to the low side of a relay coil. This output is pulled
to PGND when activated, but otherwise is high impedance.
Open-Drain Output 1. Connect OUT1 to the low side of a relay coil. This output is pulled
to PGND when activated, but otherwise is high impedance.
MAX4822/MAX4823 Pin Description
FUNCTION
7