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PDF MIC58P42BN Data sheet ( Hoja de datos )
| Número de pieza | MIC58P42BN | |
| Descripción | 8-Bit Serial-Input Protected Latched Driver | |
| Fabricantes | Micrel Semiconductor | |
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MIC58P42
MIC58P42
Micrel
8-Bit Serial-Input Protected Latched Driver
General Description
The MIC58P42 serial-input latched driver is a high-voltage
(80V), high-current (500mA) integrated circuit comprised of
eight CMOS data latches, a bipolar Darlington transistor
driver for each latch, and CMOS control circuitry for the
common STROBE, CLOCK, SERIAL DATA INPUT, and
OUTPUT ENABLE functions. Similar to the MIC5842, addi-
tional protection circuitry supplied on this device includes
thermal shutdown, under voltage lockout (UVLO), and over-
current shutdown.
The bipolar/CMOS combination provides an extremely low-
power latch with maximum interface flexibility. The MIC58P42
has open-collector outputs capable of sinking 500 mA and
integral diodes for inductive load transient suppression with
a minimum output breakdown voltage rating of 80V (50V
sustaining). The drivers can be operated with a split supply,
where the negative supply is down to –20V and may be
paralleled for higher load current capability.
With a 5V logic supply, the MIC58P42 will typically operate at
better than 5MHz. With a 12V logic supply, significantly
higher speeds are obtained. The CMOS inputs are compat-
ible with standard CMOS, PMOS, and NMOS circuits. TTL
circuits may require pull-up resistors. By using the serial data
output, drivers may be cascaded for interface applications
requiring additional drive lines.
Each of these eight outputs has an independent over current
shutdown of 500 mA. Upon over-current detection, the
affected channel
ENABLE/RESET
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2µs will not activate current shutdown. Temperatures above
165°C will shut down the device. The UVLO circuit prevents
operation at low VDD; hysteresis of 0.5V is provided. See the
MIC59P60 for a similar device that additionally provides an
error flag output.
Features
• 3.3 MHz Minimum Data-Input Rate
• CMOS, PMOS, NMOS, and TTL Compatible
• Internal Pull-Up/Pull-Down Resistors
• Low Power CMOS Logic and Latches
• High Voltage (80V) Current-Sink Outputs
• Output Transient-Protection Diodes
• Single or Split Supply Operation
• Thermal Shutdown
• Under-Voltage Lockout
• Per-Output Over-Current Shutdown (500mA typical)
Ordering Information
Part Number Temperature Range Package
MIC58P42BN
–40°C to +85°C
18-Pin Plastic DIP
MIC58P42BV
–40°C to +85°C
20-Pin PLCC
MIC58P42BWM –40°C to +85°C
18-Pin Wide SOIC
Functional Diagram
Pin Configuration
(DIP and SOIC)
CLOCK 2
SERIAL
DATA IN
3
VSS 4
UVLO
8-BIT SERIAL–PARALLEL SHIFT REGISTER
LATCHES
MOS
BIPOLAR
6 SERIAL DATA OUT
5 VDD
7 STROBE
8 OUTPUT
ENABLE/RESET
THERMAL
SHUTDOWN
ILIMIT
10 18 17 16 15 14 13 12 11
SUB 1
9
K OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OUT8
VEE
VEE
CLOCK
1
SUB
2
SERIAL DATA IN 3
VSS 4
VDD 5
SERIAL DATA OUT 6
STROBE 7
OUTPUT
ENABLE/RESET
8
VEE 9
SUB
UVLO
18 OUT1
17 OUT2
16 OUT3
15 OUT4
14 OUT5
13 OUT6
12 OUT7
11 OUT8
10 K
I LIMIT
THERMAL
SHUTDOWN
October 1998
7-49
7
1 page  
MIC58P42
Typical Characteristic Curves
Output Saturation
Voltage vs. Temperature
1.5
1.4
1.3 IL = 350mA
1.2
1.1
1 VDD = 5V to 12V
0.9
0.8 IL = 100mA
0.7
0.6
0.5
–50
0 50 100
TEMPERATURE (°C)
150
Supply Current
vs. Temperature
5
4 ALL OUTPUTS ON
VDD = 5V
3
2
1 ALL OUTPUTS OFF
0
–50 0
50 100 150
TEMPERATURE (°C)
Micrel
Current Shutdown
Threshold vs. Temperature
0.60
0.55
VDD = 5V
0.50
VDD = 12V
0.45
0.40
0.35
–50
0 50 100
TEMPERATURE (°C)
150
Output Delay
vs. Supply Voltage
300
250 RL = 50Ω
200
150
100
50
5
TD OFF
TD ON
7 9 11 13 15
SUPPLY VOLTAGE (VDD)
Supply Current
vs. Temperature
7
6 ALL OUTPUTS ON
5
4 VDD = 12V
3
2 ALL OUTPUTS OFF
1
0
–50 0
50 100 150
TEMPERATURE (°C)
Current Shutdown
Delay vs. Output Current
20
18
16
14
12
10
8
6 VDD = 12V
4
2 VDD = 5V
0
0.3 0.4 0.5 0.6 0.7 0.8
OUTPUT CURRENT (A)
0.9
Maximum Allowable Duty Cycle, Plastic DIP
VDD = 5.0V
Number of Outputs ON
(IOUT = 200mA
Max. Allowable Duty Cycle at Ambient Temperature of:
VDD = 5.0V)
25°C
40°C
50°C
60°C
70°C
8
85%
72%
64%
55%
46%
7
97%
82%
73%
63%
53%
6
100%
96%
85%
73%
62%
5
100%
100%
100%
88%
75%
4
100%
100%
100%
100%
93%
3
100%
100%
100%
100%
100%
2
100%
100%
100%
100%
100%
1
100%
100%
100%
100%
100%
VDD = 12V
Number of Outputs ON
(IOUT = 200mA
VDD = 12V)
8
7
6
5
4
3
2
1
October 1998
Max. Allowable Duty Cycle at Ambient Temperature of:
25°C
40°C
50°C
60°C
70°C
80%
68%
60%
52%
44%
91%
100%
100%
100%
100%
100%
100%
77%
90%
100%
100%
100%
100%
100%
68%
79%
95%
100%
100%
100%
100%
59%
69%
82%
100%
100%
100%
100%
50%
58%
69%
86%
100%
100%
100%
7-53
7
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| PDF Descargar | [ Datasheet MIC58P42BN.PDF ] | |
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