TS834-5IDT [STMICROELECTRONICS]
Micropower voltage supervisor with reset active low or high and integrated timer;
| 型号： | TS834-5IDT |
| 厂家： | 
ST |
| 描述： | Micropower voltage supervisor with reset active low or high and integrated timer 监控 |
| 文件： | 总7页 (文件大小：392K) |
| 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 INTEGRATED TIMER
■ ULTRA LOW POWER CONSUMPTION :
12µA max. @ V = 5V
CC
■ 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
D
SO8
TO 1.5V
(Plastic Micropackage)
■ OPEN DRAIN OUTPUT WITH
■ Vol = 450mV typ.@ Iol = 8mA & V = 4V
CC
■ FAST RESPONSE TIME : 20µs FOR A 10mV
OVERDRIVE
■ 100mV INTERNAL HYSTERESIS
P
TSSOP8
(Thin Shrink Small Outline Package)
DESCRIPTION
The TS834 is a voltage supervisor providing two
different outputs (one active low and one active
high) with an integrated timer that can be dis-
abled.
ORDER CODE
Package
Part Number Temperature Range
TS834-5I -40, +85°C
D
P
It incorporates a high stability bandgap voltage
reference and a comparator with open drain out-
put.
•
•
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
P = Thin Shrink Small Outline Package (TSSOP) - only available
in Tape & Reel (PT)
The threshold voltage is set at 4.33V by internal
thermally matched resistors.
PIN CONNECTIONS (top view)
The comparator exhibits a 20µs response (with
10mV overdrive).
An internal hysteresis of 100mV increases the
comparator noise margin and prevents false reset
Reset Low
8
1
Reset High
NC
operation.
7
6
Vcc
NC
2
APPLICATION
3
4
NC
■ Computers
■ Microcontrollers
Gnd
Timer Control*
5
■ Microprocessor systems
■ Intelligent instruments
■ Power failure detection
* This pin must be connected to Vcc or Gnd
January 2001
1/7
TS834
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
1)
VCC
7
-0.3 to Vcc + 0.3
20
V
V
Supply Voltage
Vout
Iout
Output Voltage - See note 1
Output Current
mA
mW
2)
Pd
700
625
Power Dissipation
SO8
TSSOP8
T
Operating Free Air Temperature Range
-40 to +85
°C
°C
oper
Tstg
Storage Temperature
-65 to +150
1. All voltages values, except differential voltage are with respect to network ground terminal.
2. T = 150°C, T
amb
= 25oC with Rthja = 175oC/W for SO8 package
Rthja = 200oC/W for TSSOP8 package
j
OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
VCC
Supply Voltage
Operating Free Air Temperature Range
1.5 to 5.5
-40 to +85
V
T
°C
oper
TS834-5
ELECTRICAL CHARACTERISTICS T
= 25°C (unless otherwise specified)
amb
Parameter
Threshold Voltage - VCC Increasing
= 25°C
Symbol
Min.
Typ.
Max.
4.46
4.46
Unit
T
Vthi
4.33
V
amb
4.10
-40°C ≤ T
≤ +85°C
amb
Threshold Voltage - VCC Decreasing
= 25°C
T
Vthd
4.23
100
V
amb
4.10
50
-40°C ≤ T
≤ +85°C
amb
Vhys
ICC
Hysteresis Voltage
200
12
mV
Current Consumption
VCC = 5V
µA
Low Level Output Voltage
(OUTPUT 1)
VCC = 4V, IOL = 8mA
450
450
2
800
1000
VOL1
VOL2
mV
mV
nA
-40°C ≤ T
≤ +85°C
amb
Low Level Output Voltage
(OUTPUT 2)
VCC = 5V, IOL = 8mA
800
1000
-40°C ≤ T
≤ +85°C
amb
Low Level Output Voltage
(OUTPUT 1)
VCC = 5V
40
1000
IOH1
IOH2
tphl
trst
-40°C ≤ T
≤ +85°C
amb
Low Level Output Voltage
(OUTPUT 2)
VCC = 4V
2
40
1000
nA
-40°C ≤ T
≤ +85°C
amb
Response Time High to Low
20
µs
RL = 10kΩ, CL = 15pF, VCC = Vthd -10mV
Reset Pulse width (Timer enabled)
ms
-40°C ≤ T
≤ +85°C
125
300
500
amb
2/7
TS834
TIMING DIAGRAMS
All the timung diagrams are given with outputs loaded by 10 kΩ resistors to V
CC
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 Enabled
Active High Reset, Timer Enabled
Active Low Reset, Timer Disabled
Active High Reset, Timer Disabled
3/7
TS834
Voltage Threshold (Vthi) vs Temperature
Vol vs Temperature
Output Voltage vs Input
Current Consumption vs Temperature
Output Voltage vs Input
Timer Period (trst) vs Temperature
4/7
TS834
Vol vs Isink
ResetHighAfterV Tansition(timerdisabled)
cc
ResetLowAfterV Tansition(timerdisabled)
Schematic to Measure Vol vs Isink
cc
Vcc
Vcc=4V
Isink
TS834
Reset
Vin
Reset =low
Reset
Gnd
Vcc=5V
Vcc
TS834
Isink
Reset
Reset
Vin
Reset=low
Gnd
5/7
TS834
PACKAGE MECHANICAL DATA
8 PINS - PLASTIC MICROPACKAGE (SO)
Millimeters
Dim.
Inches
Typ.
Min.
Typ.
Max.
Min.
Max.
A
a1
a2
a3
b
1.75
0.25
1.65
0.85
0.48
0.25
0.5
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
45° (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
8° (max.)
6/7
TS834
PACKAGE MECHANICAL DATA
8 PINS - THIN SHRINK SMALL OUTLINE PACKAGE
k
c
0.25mm
.010 inch
GAGE PLANE
L
L1
E1
A
E
A2
A1
b
4
5
8
D
e
1
PIN 1 IDENTIFICATION
Millimeters
Typ.
Inches
Typ.
Dim.
Min.
Max.
Min.
Max.
A
A1
A2
b
1.20
0.15
1.05
0.30
0.20
3.10
0.05
0.006
0.041
0.15
0.05
0.80
0.19
0.09
2.90
0.01
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
0°
8°
0°
8°
l
0.50
0.45
0.60
0.600
1.000
0.75
0.75
0.09
0.018
0.0236
0.024
0.039
0.030
0.030
L
L1
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
consequences 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 supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.
© The ST logo is a registered trademark of STMicroelectronics
© 2001 STMicroelectronics - Printed in Italy - All Rights Reserved
STMicroelectronics GROUP OF COMPANIES
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7/7
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