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IS4825 DC Operating Voltages
Signal Signal Description Minimum Maximum Condition
VIN Operating Voltage 4.75V 5.25V
VIH(1) Input High (RX, CTS) 2.5V
VIL(1) Input Low (RX, CTS) 0.8V
VIH(2) Input High (TTL_INV, nWake) 0.8 x Vin
VIL(2) Input Low (TTL_INV, nWake) 0.8V
VIH(3) Input High (EXT. Trigger) 0.8 x Vin
VIL(3) Input Low (EXT. Trigger) 0.8V
VOH(1) Output High Voltage (TX,RTS) 0.8 x Vin Isource = 16 mA
VOL(1) Output Low Voltage (TX,RTS) 0.14 x Vin Isink = 16 mA
VOH(2) Output High Voltage (nBeeper, nGoodRead)
***
3.6V or 5.5V
VOL(2) Output Low Voltage (nBeeper, nGoodRead) 1.6V Isink = 25 mA
VOH(3) Output High Voltage (Power down)
***
3.6V or 5.5V
VOL(3) Output Low Voltage (Power down) 0.2V Isink = 8 mA
*** PWRDWN, nGoodRead, and nBeeper are open drain outputs w/ 100K pull-ups to VIN. Actual VOH will be determined
by the parallel resistance of the 100K pull up and any external impedance.
Current Draw @ 25°C
Signal Signal Description
USB
TTL
VIN = 3.3V VIN = 5V VIN = 3.3V VIN = 5V
Continuous
Scan mode
Average current draw during
continuous scan mode*
150 mA 130 mA 130 mA 130 mA
Stand By
Average current draw while in idle
mode**
60 mA 72 mA 50 mA 45 mA
Sleep
Average current draw while in sleep
mode**
50 mA 53 mA 5.5 mA 15 mA
Suspend
Mode
(USB)
Average current draw in USB
suspend (USB version only)
5.5 mA 0.3 mA N/A N/A
* Continuous Scan Mode current will vary based on object size, distance, and type.
The numbers listed above are typical.
** To conserve power for battery operated devices, Honeywell recommends using a power switch to operate
the scan engine.