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U6805B 반도체 회로 부품 판매점

Hex-Driver with Thermal Monitoring



TEMIC Semiconductors 로고
TEMIC Semiconductors
U6805B 데이터시트, 핀배열, 회로
Hex-Driver with Thermal Monitoring
U6805B
Description
The hex-driver IC includes 6 non-inverted and current
limited output stages with an open collector. Common
thermal shutdown protects outputs against critical
junction temperature.
Each output can sink 20 mA, parallel output operation is
possible. The digital inputs have Schmitt-trigger function
with pull-up current sources to 5 V.
Features
D Six input comparators with Schmitt-trigger
characteristic
"D Input clamping current capability to 10 mA
D Integrated protection cells (EMC, ESD, RF)
dedicated to all input stages
D Common shutdown by junction temperature monitor
D Low voltage reset with hysteresis
" WD ESD protection to human body model:
2000 V (C = 100 pF, R = 1.5 k )
D Output stages:
– Short circuit protected with diode
W– Load-dump protected @ 1 k
– No crosstalk on adjacent channels
– Clamping current @ – 2 mA
– Jump start possible
Ordering Information
Extended Type Number
U6805B–FP
Block Diagram
Package
SO14
VO1 VO2 VO3 VO4 VO5 VO6
1 23 56 7
Remarks
11
VS
Thermal
shutdown
Under
voltage
detection
TELEFUNKEN Semiconductors
Rev. A3, 28-Apr-97
VS=5 V
14 13 12 10 9
8
VI1 VI2 VI3 VI4 VI5 VI6
Figure 1.
4
GND
VS
13334
1 (5)


U6805B 데이터시트, 핀배열, 회로
U6805B
Pin Description
VO1 1
VO2 2
VO3 3
GND 4
VO4 5
VO5 6
VO6 7
14 VI1
13 VI2
12 VI3
11 VS
10 VI4
9 VI5
8 VI6
Pin Symbol
Function
1 VO1 Output 1
2 VO2 Output 2
3 VO3 Output 3
4 GND Ground
5 VO4 Output 4
6 VO5 Output 5
7 VO6 Output 6
8 VI6 Input 6
9 VI5 Input 5
10 VI4 Input 4
11 VS Supply voltage, 5 V
12 VI3 Input 3
13 VI2 Input 2
14 VI1 Input 1
13335
Figure 2. Pinning
Basic Circuitry
"Integrated circuit, U6805B, requires a stabilized supply
voltage (VS = 5 V 5%) to comply with its electrical
characteristics. An external buffer capacitor of C = 100 nF
value is recommended. An integrated 14-V Z-diode
between VS and ground protects the supply pin.
WAll input stages are provided with an integrated 250 k
pull–up resistor and can be directly connected to a micro-
controller.
All output stages are open collectors each capable of
Wsinking 20 mA. Recommended external components:
Pull–up resistor, R = 1 k
Capacitor to GND, C = 470 pF, see figure 3
Functional Description
General
ON state: Low level at the input stage activates the
corresponding output stage.
OFF state: The internal pull-up resistor gives high level
to the input comparator and deactivates the output stage.
"7-V Z-diodes between each input pin and GND are
capable of 10 mA clamping currents without crosstalk
on adjacent input stages.
"A total clamping current of 30 mA should be observed
with respect to the power dissipation.
Current Limitation of the Output
Stages and Overtemperature
Shut-down
A temperature dependent current limitation between
25 and 100 mA protects the stages during a short.
Additionally the chip temperature is monitored. For Tchip
> 148_C all outputs are disabled and automatically
enabled with a hysteresis of DTChip > 5 K.
Refer to hexdriver U6807B if the temperature shut down
is not required.
Transients and Load-Dump
An integrated 28-V Z-diode protects each output stage
against transients and load-dump (Schaffner pulses).
With the help of external 1-kW resistor , the output
transistor is capable of the corresponding current which
flows during each of these conditions. Apart from that,
outputs are short circuit and overload protected.
Low Voltage Detection
When supply voltage is switched on, a power-on reset
pulse is generated internally, which disables all output
stages until a defined supply voltage level is reached. The
low voltage detection is provided with a hysteresis of
Vhyst = 0.5 V typically.
2 (5) TELEFUNKEN Semiconductors
Rev. A3, 28-Apr-97




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U6805B driver

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