Data Sheet S13198EJ2V0DS

7

µµµµ PC2807, 2807A

NOTES FOR BiCMOS DEVICES

1

PRECAUTION AGAINST ESD FOR SEMICONDUCTORS

Note:

Strong electric field, when exposed to a device, can cause destruction of the gate oxide and

ultimately degrade the device operation. Steps must be taken to stop generation of static electricity

as much as possible, and quickly dissipate it once, when it has occurred. Environmental control

must be adequate. When it is dry, humidifier should be used. It is recommended to avoid using

insulators that easily build static electricity. Semiconductor devices must be stored and transported

in an anti-static container, static shielding bag or conductive material. All test and measurement

tools including work bench and floor should be grounded. The operator should be grounded using

wrist strap. Semiconductor devices must not be touched with bare hands. Similar precautions need

to be taken for PW boards with semiconductor devices on it.

2

HANDLING OF UNUSED INPUT PINS

Note:

No connection for device inputs can be cause of malfunction. If no connection is provided to the

input pins, it is possible that an internal input level may be generated due to noise, etc., hence

causing malfunction. Input levels of devices must be fixed high or low by using a pull-up or pull-

down circuitry.

Each unused pin should be connected to VDD or GND with a resistor, if it is

considered to have a possibility of being an output pin. All handling related to the unused pins must

be judged device by device and related specifications governing the devices.

3

STATUS BEFORE INITIALIZATION OF BiCMOS DEVICES

Note:

Power-on does not necessarily define initial status of device. Production process of BiCMOS does

not define the initial operation status of the device. Immediately after the power source is turned

ON, the devices with reset function have not yet been initialized.

Hence, power-on does not

guarantee out-pin levels, I/O settings or contents of registers. Device is not initialized until the reset

signal is received. Reset operation must be executed immediately after power-on for devices

having reset function.