TS834-51P [ETC]
Voltage Detector ; 电压检测器\n
| 型号： | TS834-51P |
| 厂家： | 
ETC |
| 描述： | Voltage Detector
|
| 文件： | 总8页 (文件大小：89K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TS834
MICROPOWER VOLTAGE SUPERVISOR
RESET ACTIVE LOW OR HIGH WITH INTEGRATED TIMER
.
.
ULTRA LOW POWER CONSUMPTION : 12µA
max. @ VCC = 5V
BOTH ACTIVE HIGH AND ACTIVE LOW
OUTPUTS
RESET TIMER WITH DISABLE FUNCTION
PRECISION RESET THRESHOLD (guaran-
teed over Temperature)
4.33V typ. THRESHOLD VOLTAGE
GUARANTEED RESET OPERATION DOWN
TO 1.5V
.
.
D
SO8
N
DIP8
.
.
.
.
(Plastic Package)
(Plastic Micropackage)
OPEN DRAIN OUTPUT WITH
Vol = 450mVtyp. @ Iol = 8mA & VCC = 4V
FAST RESPONSE TIME : 20µs FOR A 10mV
OVERDRIVE
100mV INTERNAL HYSTERESIS
P
TSSOP8
(Thin Shrink Small Outline Package)
ORDER CODES
Package
Part Number
Temperature Range
N
D
P
TS834-5I
-40, +85oC
•
•
•
DESCRIPTION
The TS834 is a voltage supervisor providing two
different outputs (one active low and one active
high) with anintegratedtimer that canbedisabled.
It incorporates a high stability bandgap voltage ref-
erence and a comparator with open drain output.
The threshold voltage is set at 4.33V by internal
thermally matched resistors.
The comparator exhibits a 20µs response (with
10mV overdrive).
An internal hysteresis of 100mV increases the
comparator noisemarginand preventsfalsereset
operation.
PIN CONNECTIONS
Reset Low
1
8
Reset High
NC
7
Vcc
NC
2
3
6
5
NC
Gnd
Time r Control*
APPLICATIONS
4
.
Computers
Microcontrollers
Microprocessor systems
Intelligent instruments
.
*This pin must be connecte d to Vcc or Gnd
.
.
.
Power failure detection
1/8
November 1999
TS834
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
VCC
Vout
Iout
Supply Voltage - note 1
Output Voltage - note 1
Output Current
7
-0.3 to VCC + 0.3
20
V
mA
mW
Pd
Power Dissipation - note 2
SO8
DIP8
700
1200
TSSOP8
625
Toper
Tstg
Operating Free Air Temperature Range
Storage Temperature
-40 to +85
-65 to +150
oC
oC
Note: 1. All voltages values, except differential voltage are with respect to network ground terminal.
2. Tj = 150oC, Tamb = 25oC with Rthja = 175oC/W for SO8 package
Rthja = 100oC/W for DIP8 package
Rthja = 200oC/W for TSSOP8 package
OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
VCC
Supply Voltage
1.5 to 5.5
V
TS834-5
ELECTRICAL CHARACTERISTICS Tamb = 25oC (unless otherwise specified)
Test Condition
Symbol
Parameter
Threshold Voltage
Min.
Typ.
Max.
Unit
Vthi
Tamb = 25oC
4.33
V
-40 ≤ Tamb ≤ +85oC
V
CC Increasing
4.10
4.46
Vthd
Threshold Voltage
Tamb = 25oC
4.23
100
V
-40 ≤ Tamb ≤ +85oC
V
CC Decreasing
4.10
50
4.46
200
12
Hysteresis Voltage
Vhys
ICC
mV
µA
Current Consumption
VCC = 5V
VOL1
Low Level Output Voltage
(OUTPUT 1)
VCC = 4V, IOL = 8mA,
450
450
800
mV
-40 ≤ Tamb ≤ +85oC
1000
VOL2
Low Level Output Voltage
(OUTPUT 2)
VCC = 5V, IOL = 8mA,
800
1000
mV
-40 ≤ Tamb ≤ +85oC
IOH1
IOH2
Output Off-state Leakage current
(OUTPUT 1)
VCC = 5V
2
2
40
nA
nA
µs
-40 ≤ Tamb ≤ +85oC
1000
Output Off-state Leakage current
(OUTPUT 2)
VCC = 4V
40
1000
-40 ≤ Tamb ≤ +85oC
tphl
Response Time High to Low
20
RL = 10kΩ, CL = 15pF
VCC = Vthd -10mV
2/8
TS834
TIMING DIAGRAMS
All the timing diagrams are given with outputs loaded by 10kWresistors to VCC.
Vcc+
Input
Timer Control
Vcc
RESET
OUTPUT
Timer
Vcc
RESET
OUTPUT
Vref
Timer enable : timer control to Vcc
Timer disable : timer control to Gnd
GND
Active Low Reset, Timer Disabled
Active Low Reset, Timer Enabled
Active High Reset, Timer Enabled
Active High Reset, Timer Disabled
3/8
TS834
Voltage Threshold (Vthi) vs Temperature
Current Consumption vs Temperature
Timer Period (trst) vs Temperature
Vol vs Temperature
Output Voltage vs Input
Output Voltage vs Input
4/8
TS834
Vol vs Isink
Schematic to Measure Vol vs Isink
Vc c
Vc c = 4V
Is in k
TS834
Reset =low
Vcc =5V
Vc c
Is in k
TS834
Reset=low
Reset High After Vcc Transition
(timer disabled)
Reset Low After Vcc Transition
(timer disabled)
5/8
TS834
PACKAGE MECHANICAL DATA
8 PINS - PLASTIC PACKAGE
Millimeters
Inches
Typ.
Dimensions
Min.
Typ.
Max.
Min.
Max.
A
a1
B
3.32
0.131
0.51
1.15
0.020
0.045
0.014
0.008
1.65
0.55
0.065
0.022
0.012
0.430
0.384
b
0.356
0.204
b1
D
E
0.304
10.92
9.75
7.95
0.313
e
2.54
7.62
7.62
0.100
0.300
0.300
e3
e4
F
6.6
0260
0.200
0.150
0.060
i
5.08
3.81
1.52
L
3.18
0.125
Z
6/8
TS834
PACKAGE MECHANICAL DATA
8 PINS - PLASTICMICROPACKAGE(SO)
Millimeters
Dim.
Inches
Typ.
Min.
Typ.
Max.
1.75
0.25
1.65
0.85
0.48
0.25
0.5
Min.
Max.
A
a1
a2
a3
b
0.069
0.010
0.065
0.033
0.019
0.010
0.020
0.1
0.004
0.65
0.35
0.19
0.25
0.026
0.014
0.007
0.010
b1
C
c1
D
45o (typ.)
4.8
5.8
5.0
6.2
0.189
0.228
0.197
0.244
E
e
1.27
3.81
0.050
0.150
e3
F
3.8
0.4
4.0
1.27
0.6
0.150
0.016
0.157
0.050
0.024
L
M
S
8o (max.)
7/8
TS834
PACKAGE MECHANICAL DATA
8 PINS - THIN SHRINK SMALL OUTLINE PACKAGE
0,25 mm
.010 inch
GAGE PLANE
A
E
A2
A1
PIN 1 IDENTIFICATION
Millimeters
Typ.
Inches
Typ.
Dim.
Min.
Max.
1.20
0.15
1.05
0.30
0.20
3.10
Min.
Max.
0.05
A
A1
A2
b
0.05
0.80
0.19
0.09
2.90
0.01
0.006
0.041
0.15
1.00
0.031
0.007
0.003
0.114
0.039
c
0.012
0.122
D
E
3.00
6.40
4.40
0.65
0.118
0.252
0.173
0.025
E1
e
4.30
4.50
0.169
0.177
k
0o
8o
0o
8o
l
0.50
0.60
0.75
0.09
0.0236
0.030
Information furnishedis believedto be accurateand reliable. However, STMicroelectronicsassumesno responsibility for the conse-
quences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use.
No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously sup-
plied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without ex-
press written approval of STMicroelectronics.
The ST logo is a trademark of STMicroelectronics
1999 STMicroelectronics – Printed in Italy – All Rights Reserved
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8/8
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