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PDF MAX16054 Data sheet ( Hoja de datos )
| Número de pieza | MAX16054 | |
| Descripción | On/Off Controller | |
| Fabricantes | Maxim Integrated Products | |
| Logotipo |  |
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19-4128; Rev 0; 5/08
www.DataSheet4U.com
On/Off Controller with Debounce and
±15kV ESD Protection
General Description
The MAX16054 is a pushbutton on/off controller with a
single switch debouncer and built-in latch. It accepts a
noisy input from a mechanical switch and produces a
clean latched digital output after a factory-fixed qualifi-
cation delay.
The MAX16054 eliminates contact bounce during switch
opening and closing. The state of the output changes
only when triggered by the falling edge of the
debounced switch input; the output remains unchanged
on the rising edge of the input. Robust switch inputs
handle ±25V levels and are ±15kV ESD protected for
use in harsh industrial environments. The MAX16054
features a complementary output, OUT, which is the
inverted state of OUT. An asynchronous CLEAR input
allows an external signal to force the output flip-flop low.
Undervoltage-lockout circuitry ensures that OUT is in the
off state upon power-up. The MAX16054 requires no
external components, and its low supply current makes
it ideal for use in portable equipment.
The MAX16054 operates from a +2.7V to +5.5V single
supply. The MAX16054 is offered in a 6-pin thin SOT23
package and operates over the -40°C to +125°C auto-
motive temperature range.
Applications
PDAs
MP3/Video Players
Portable Electronics
Set-Top Boxes
Portable Instrumentation
White Goods
Pin Configuration
TOP VIEW
+
IN 1
6 VCC
MAX16054
GND 2
5 OUT
Features
o Robust Inputs Can Handle Power Supplies Up to
±25V
o ±15kV ESD Protection
o Latched Output
o Low 7µA Supply Current
o Operates from 2.7V to 5.5V
o -40°C to +125°C Temperature Range
o Thin SOT23 Package
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX16054AZT+T -40°C to +125°C 6 Thin SOT23 +AADU
+Denotes a lead-free package.
T = Tape and reel package. Devices are offered in 2.5k unit
increments.
Typical Operating Circuits
LDO
EN
VCC
OUT
3V
MAX16054
IN OUT
μP
CLEAR
GND
CLEAR 3
4 OUT
THIN SOT23
ON/OFF WITH LDO
Typical Operating Circuits continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1 page  
www.DataSheet4U.com
On/Off Controller with Debounce and
±15kV ESD Protection
VCC
UVLO
IN
OUTPUT OF D
FLIP-FLOP
(INVERTED
IN AFTER
DEBOUNCE)
OUT
tDP tDP
tDP tDP tDP
tCO
CLEAR
Figure 1. MAX16054 Timing Diagram
Undervoltage Lockout
The undervoltage-lockout circuitry ensures that the out-
puts are at the correct state on power-up. While VCC is
less than the 2.1V (typ) undervoltage threshold and
greater than 1.0V, OUT remains low and transitions at
IN are ignored.
Robust Switch Input
The switch input (IN) has overvoltage clamping diodes to
protect against damaging fault conditions. Switch input
voltages can safely swing ±25V to ground. Proprietary
ESD-protection structures protect against high ESD
encountered in harsh industrial environments, membrane
keypads, and portable applications. They are designed
to withstand ±15kV per the IEC 61000-4-2 Air-Gap
Discharge test and ±8kV per the IEC 61000-4-2 Contact-
Discharge test.
Since there is a 63kΩ (typ) pullup resistor connected to
IN, driving the input to -25V draws approximately 0.5mA
from the VCC supply. Driving the input to +25V causes
approximately 0.32mA of current to flow back into the
VCC supply. If the total system VCC supply current is
less than the current flowing back into the VCC supply,
VCC rises above normal levels. In some low-current sys-
tems, a zener diode on VCC may be required.
±15kV ESD Protection
ESD-protection structures are incorporated on all pins
to protect against electrostatic discharges encountered
during handling and assembly. The MAX16054 has
extra protection against static electricity to protect
against ESD of ±15kV at the switch input without dam-
age. The ESD structures withstand high ESD in all
states: normal operation, shutdown, and powered
down. A design advantage of the MAX16054 is that it
continues working without latchup after an ESD event,
which eliminates the need to power-cycle the device.
ESD protection can be tested in various ways; this
product is characterized for protection to the following
limits:
1) ±15kV using the Human Body Model.
2) ±8kV using the Contact-Discharge method specified
in IEC 61000-4-2.
3) ±15kV using the IEC 61000-4-2 Air-Gap method.
_______________________________________________________________________________________ 5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet MAX16054.PDF ] | |
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