Shenzhen Hongxinwei Technology Co., Ltd |
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MAX4820EUP+T 100% Original
1.General Description.
The MAX4820/MAX4821 8-channel relay drivers offerbuilt-in kickback
protection and drive +3.3V/+5V non-latching or dual-coil-latching
relays. These devices areespecially useful when driving +3V relays.
Each inde-pendent open-drain output features a 2Ωon-resistanceand
is guaranteed to sink 70mA (min) of load current.Both devices
consume less than 50μA (max) quiescentcurrent and have 1μA output
off-leakage current.
The MAX4820 features an SPI™-/QSPI™-/MICROWIRE™-compatible serial
interface. Input data is shifted into an 8-bit shift register and
latched to the outputs when CStransitions from low to high. Each
data bit in the shift reg-ister corresponds to a specific output,
allowing indepen-dent control of all outputs.
The MAX4821 features a 4-bit (A0, A1, A2, LVL) paral-lel-input
interface. The first three bits (A0, A1, A2) deter-mine the output
address, and the fourth bit (LVL)determines whether the selected
output is switched onor off. Data is latched to the outputs when
CStransi-tions from low to high.
Both devices feature separate set and reset functionsthat allow the
user to turn on or turn off all outputs simul-taneously with a
single control line. Built-in hysteresis(Schmidt trigger) on all
digital inputs allows this deviceto be used with slow rising and
falling signals, such asthose from optocouplers or RC power-up
initializationcircuits. The MAX4820/MAX4821 are available in
20-pinTSSOP and space-saving 20-pin Thin QFN packages.
2.Features
♦ 8 Independent Output Channels
♦ Built-In Inductive Kickback Protection
♦ Drive +3V and +5V Relays
♦ Guaranteed 70mA (min) Coil Drive Current
♦ SETFunction to Turn On All OutputsSimultaneously
♦ RESETFunction to Turn Off All OutputsSimultaneously
♦ SPI-/QSPI-/MICROWIRE-Compatible SerialInterface (MAX4820)
♦ Serial Digital Output for Daisy Chaining(MAX4820)
♦ Parallel Interface (MAX4821)
♦ Low 50μA (max) Quiescent Supply Current
♦ Space-Saving 20-Pin Thin QFN Package
3.Ordering Information
4.Pin Configurations
6.Pin Configurations (continued)
5.Why choose us?
100% new and originao with Advantage price
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