DS1374U-33 datasheet, PDF - EEWORLD Datasheet

EEWORLDEEWORLD

Datasheet

Datasheet> All Categories > Power/power management> The power supply circuit> DS1374U-33

Preview

DS1374U-33: Description1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO10, 3 MM, MICRO, SOP-10; CategoryPower/power management The power supply circuit; File Size1MB，18 Pages; ManufacturerRochester Electronics; Websitehttps://www.rocelec.com/

Download Datasheet Parametric Compare View All

DS1374U-33 Online Shopping

Suppliers	Part Number	Price	MOQ	In stock
	DS1374U-33	-	-	View	Buy Now

DS1374U-33 Overview

1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO10, 3 MM, MICRO, SOP-10

DS1374U-33 Parametric

Parameter Name	Attribute value
Is it lead-free?	Contains lead
Is it Rohs certified?	incompatible
Maker	Rochester Electronics
Parts packaging code	SOIC
package instruction	TSSOP,
Contacts	10
Reach Compliance Code	unknown
Adjustable threshold	NO
Analog Integrated Circuits - Other Types	POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 code	S-PDSO-G10
JESD-609 code	e0
length	3 mm
Humidity sensitivity level	1
Number of channels	1
Number of functions	1
Number of terminals	10
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	TSSOP
Package shape	SQUARE
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	240
Maximum seat height	1.1 mm
Maximum supply voltage (Vsup)	5.5 V
Minimum supply voltage (Vsup)	2.97 V
Nominal supply voltage (Vsup)	3.3 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	TIN LEAD
Terminal form	GULL WING
Terminal pitch	0.5 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	20
width	3 mm

DS1374U-33 Preview

D ts e t

aa h e

R c e t r lc r nc

o h se Ee to is

Ma u a t r dCo o e t

n fc u e

mp n n s

R c e tr b a d d c mp n ns ae

o h se rn e

o oet r

ma ua trd u ig ete dewaes

n fcue sn i r i/ fr

h

p rh s d f m te oiia s p l r

uc a e r

o h r n l u pi s

g

e

o R c e tr waes rce td f m

r o h se

fr e rae r

o

te oiia I. Al rce t n ae

h

r nl P

g

l e rai s r

o

d n wi tea p o a o teOC

o e t h p rv l f h

h

M.

P r aetse u igoiia fcoy

at r e td sn r n la tr

s

g

ts p o rmso R c e tr e eo e

e t rga

r o h se d v lp d

ts s lt n t g aa te p o u t

e t oui s o u rne

o

rd c

me t o e c e teOC d t s e t

es r x e d h

M aa h e.

Qu l yOv riw

ai

t

e ve

• IO- 0 1

S 90

•A 92 cr ct n

S 1 0 et ai

i

o

• Qu l e Ma ua trr Ls (

ai d

n fcues it QML MI- R -

) LP F

385

53

•C a sQ Mitr

ls

lay

i

•C a sVS a eL v l

ls

p c ee

• Qu l e S p l r Ls o D sr uos( L )

ai d u pi s it f it b tr QS D

e

i

•R c e trsacic l u pir oD A a d

o h se i

r ia s p l t L n

t

e

me t aln u t a dD A sa d r s

es lid sr n L tn ad .

y

R c e tr lcrnc , L i c mmi e t

o h se Ee t is L C s o

o

tdo

t

s p ligp o u t ta s t f c so r x e t-

u pyn rd cs h t ai y u tme e p ca

s

t n fr u lya daee u loto eoiial

i s o q ai n r q a t h s r n l

o

t

g

y

s p l db id sr ma ua trr.

u pi

e yn ut

y n fcues

T eoiia ma ua trr d ts e t c o a yn ti d c me t e e t tep r r n e

h r n l n fcue’ aa h e a c mp n ig hs o u n r cs h ef ma c

g

s

o

a ds e ic t n o teR c e tr n fcue v rino ti d vc . o h se Ee t n

n p c ai s f h o h se ma ua trd eso f hs e ie R c e tr lcr -

o

isg aa te tep r r n eo i s mio d co p o u t t teoiia OE s e ic -

c u rne s h ef ma c ft e c n u tr rd cs o h r n l M p c a

o

s

g

t n .T pc lv le aefr eee c p r o e o l. eti mii m o ma i m rt g

i s ‘y ia’ au s r o rfrn e up s s ny C r n nmu

o

a

r xmu ai s

n

ma b b s do p o u t h rceiain d sg , i lt n o s mpetsig

y e a e n rd c c aa tr t , e in smuai , r a l e t .

z o

o

n

0 3 ohs E cr i , L . lRg s eevd 7 1 0 3

e e oc

h

T l r m r, l s v iw wrcl . m

o e n oe p ae it w . e c o

a

e

s

o ec

Rev 3; 1/06

I

2

C, 32-Bit Binary Counter Watchdog RTC with

Trickle Charger and Reset Input/Output

General Description

The DS1374 is a 32-bit binary counter designed to contin-

uously count time in seconds. An additional counter gen-

erates a periodic alarm or serves as a watchdog timer. If

disabled, this counter can be used as 3 bytes of non-

volatile (NV) RAM. Separate output pins are provided for

an interrupt and a square wave at one of four selectable

frequencies. A precision temperature-compensated refer-

ence and comparator circuit monitor the status of V

CC

to

detect power failures, provide a reset output, and auto-

matically switch to the backup supply when necessary.

Additionally, the reset pin is monitored as a pushbutton

input for externally generating a reset. The device is pro-

grammed serially through an I

2

C serial interface.

Features

♦

32-Bit Binary Counter

♦

Second Binary Counter Provides Time-of-Day

Alarm, Watchdog Timer, or NV RAM

♦

Separate Square-Wave and Interrupt Output Pins

♦

I

2

C Serial Interface

♦

Automatic Power-Fail Detect and Switch Circuitry

♦

Single-Pin Pushbutton Reset Input/Open-Drain

Reset Output

♦

Low-Voltage Operation

♦

Trickle-Charge Capability

♦

-40°C to +85°C Operating Temperature Range

♦

10-Pin μSOP, 16-Pin SO

♦

Available in a Surface-Mount Package with an

Integrated Crystal (DS1374C)

♦

Underwriters Laboratory (UL) Recognized

DS1374

Applications

Portable Instruments

Point-of-Sale Equipment

Medical Equipment

Telecommunications

Typical Operating Circuit

RPU = t

r

/C

B

V

CC

CRYSTAL

V

CC

RPU RPU

V

CC

X1

SCL

CPU

INT

RST

SDA

INT

RST

N.O.

PUSHBUTTON

RESET

V

BACKUP

GND

X2

V

CC

SQW

*PI

2

C,

Is

aI

2

C-

p I

2

Cs

t I

2

Cs.

DS1374

PRIMARY

BATTERY,

RECHARGEABLE

BATTERY, OR

SUPER CAPACITOR

Pin Configurations appear at the end of the data sheet.

Ordering Information

PART

DS1374C-18

DS1374C-18#

DS1374C-3

DS1374C-3#

DS1374C-33

DS1374C-33#

DS1374C-33/T&R

TEMP RANGE

-40°C to +85°C

VOLTAGE (V)

1.8

3.0

3.3

PIN-PACKAGE

16 SO (300 mils)

16 SO (300 mils)/Tape and Reel

TOP MARK**

DS1374C-18

DS1374C-3

DS1374C-33

Ordering Information continued at end of data sheet.

#Denotes

a RoHS-compliant device that may include lead that is exempt under RoHS requirements. The lead finish is JESD97 category

e3, and is compatible with both lead-based and lead-free soldering processes.

**A

"#" anywhere on the top mark denotes a RoHS-compliant package.

______________________________________________

Maxim Integrated Products

1

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

I

2

C, 32-Bit Binary Counter Watchdog RTC with

Trickle Charger and Reset Input/Output

DS1374

ABSOLUTE MAXIMUM RATINGS

Voltage Range on V

CC

Pin Relative to Ground .....-0.3V to +6.0V

Voltage Range on SDA, SCL, and WDS

Relative to Ground ....................................-0.3V to V

CC

+ 0.3V

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-55°C to +125°C

Soldering Temperature Range ........................See the

Handling,

PC Board Layout, and Assembly

section.

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

RECOMMENDED DC OPERATING CONDITIONS

(V

CC

= V

CC(MIN)

to V

CC(MAX)

, T

A

= -40°C to +85°C, unless otherwise noted.) (Note 1)

PARAMETER

Supply Voltage

(Notes 2, 3)

Input Logic 1

Input Logic 0

Pullup Resistor Voltage (INT,

SQW, SDA, SCL), V

CC

= 0V

Power-Fail Voltage

(Note 2)

SYMBOL

DS1374-33

V

CC

V

IH

V

IL

V

PU

DS1374-3

DS1374-18

(Note 2)

DS1374-33

V

PF

DS1374-3

DS1374-18

Backup Supply Voltage

(Notes 2, 3, 4)

V

BACKUP

DS1374-33

DS1374-3, DS1374-18

2.70

2.45

1.51

1.3

2.88

2.6

1.6

3.0

CONDITIONS

MIN

2.97

2.7

1.71

0.7 x V

CC

-0.3

TYP

3.3

3.0

1.8

MAX

5.50

3.3

1.89

V

CC

+ 0.3

+0.3 x

V

CC

5.5

2.97

2.7

1.71

V

CC

(

MAX)

3.7

V

UNITS

2

_____________________________________________________________________

I

2

C, 32-Bit Binary Counter Watchdog RTC with

Trickle Charger and Reset Input/Output

DC ELECTRICAL CHARACTERISTICS

(V

CC

= V

CC(MIN)

to V

CC(MAX)

, T

A

= -40°C to +85°C, unless otherwise noted.) (Note 1)

PARAMETER

Trickle-Charge Current-Limiting

Resistors

Input Leakage

I/O Leakage

RST

Pin I/O Leakage

SDA Logic 0 Output (V

OL

= 0.4V)

RST,

SQW, and

INT

Logic 0

Outputs (Note 11)

SYMBOL

R1

R2

R3

I

LI

I

LO

I

LORST

I

OLSDA

V

CC

> 2V; V

OL

= 0.4V

I

OL1

1.71V < V

CC

< 2V; V

OL

= 0.2 V

CC

1.3V < V

CC

< 1.71V; V

OL

= 0.2 V

CC

DS1374-18

Active Supply Current

(Notes 11, 12)

I

CCA

DS1374-3

DS1374-33

DS1374-18

Standby Current (Notes 11, 13)

V

BACKUP

Leakage Current

(V

BACKUP

= 3.7V)

I

CCS

DS1374-3

DS1374-33

I

BACKUPLKG

75

110

180

60

80

115

(Note 5)

(Note 6)

(Note 7)

(Note 8)

(Note 9)

(Note 10)

-1

-200

CONDITIONS

MIN

TYP

250

2000

4000

+1

3.0

250

150

200

300

100

125

175

100

nA

µA

mA

µA

Ω

MAX

UNITS

DS1374

DC ELECTRICAL CHARACTERISTICS

(V

CC

= 0V, V

BACKUP

= 3.7V,

T

A

= -40°C to +85°C, unless otherwise noted.) (Note 1)

PARAMETER

V

BACKUP

Current (OSC ON);

SQW OFF

V

BACKUP

Current (OSC ON);

SQW ON (32kHz)

V

BACKUP

Data-Retention Current

(OSC OFF)

SYMBOL

I

BKOSC1

I

BKOSC2

I

BACKUPDR

(Note 14)

(Notes 14, 15)

CONDITIONS

MAX

TYP

400

600

25

MAX

700

1000

100

UNITS

nA

_____________________________________________________________________

3

I

2

C, 32-Bit Binary Counter Watchdog RTC with

Trickle Charger and Reset Input/Output

DS1374

AC ELECTRICAL CHARACTERISTICS

(V

CC

= V

CC(MIN)

to V

CC(MAX)

, T

A

= -40°C to +85°C, unless otherwise noted.) (Note 1) (Figure 1)

PARAMETER

SCL Clock Frequency (Note 16)

Bus Free Time Between STOP

and START Conditions

Hold Time (Repeated) START

Condition (Note 17)

Low Period of SCL Clock

High Period of SCL Clock

Data Hold Time (Notes 18, 19)

Data Setup Time (Note 20)

Start Setup Time

Rise Time of Both SDA and SCL

Signals (Note 16)

Fall Time of Both SDA and SCL

Signals (Note 16)

Setup Time for STOP Condition

Capacitive Load for Each Bus Line

I/O Capacitance (SDA, SCL)

Pulse Width of Spikes That Must

be Suppressed by the Input Filter

Pushbutton Debounce

Reset Active Time

Oscillator Stop Flag (OSF) Delay

SYMBOL

f

SCL

t

BUF

t

HD:STA

t

LOW

t

HIGH

t

HD:DAT

t

SU:DAT

t

SU:STA

t

R

t

F

t

SU:STO

C

B

C

I/O

t

SP

PB

DB

t

RST

t

OSF

Fast mode

Standard mode

Fast mode

Standard mode

Fast mode

Standard mode

Fast mode

Standard mode

Fast mode

Standard mode

Fast mode

Standard mode

Fast mode

Standard mode

Fast mode

Standard mode

Fast mode

Standard mode

Fast mode

Standard mode

Fast mode

Standard mode

(Note 16)

(Note 21)

Fast mode

(Figure 2)

(Note 22)

30

250

100

CONDITIONS

MIN

100

0

1.3

4.7

0.6

4.0

1.3

4.7

0.6

4.0

0

100

250

0.6

4.7

20 +

0.1C

B

20 +

0.1C

B

0.6

4.7

400

10

300

1000

300

0.9

TYP

MAX

400

100

UNITS

kHz

µs

ns

µs

ns

µs

pF

ns

ms

4

_____________________________________________________________________

More (Only the first 5 pages are displayed. Please Download Datasheet to view the full content.) >

DS1374U-33 Related Products

	DS1374U-33	DS1374U-18
Description	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO10, 3 MM, MICRO, SOP-10	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO10, 3 MM, MICRO, SOP-10
Is it lead-free?	Contains lead	Contains lead
Is it Rohs certified?	incompatible	incompatible
Maker	Rochester Electronics	Rochester Electronics
Parts packaging code	SOIC	SOIC
package instruction	TSSOP,	TSSOP,
Contacts	10	10
Reach Compliance Code	unknown	unknown
Adjustable threshold	NO	NO
Analog Integrated Circuits - Other Types	POWER SUPPLY MANAGEMENT CIRCUIT	POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 code	S-PDSO-G10	S-PDSO-G10
JESD-609 code	e0	e0
length	3 mm	3 mm
Humidity sensitivity level	1	1
Number of channels	1	1
Number of functions	1	1
Number of terminals	10	10
Maximum operating temperature	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	TSSOP	TSSOP
Package shape	SQUARE	SQUARE
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	240	240
Maximum seat height	1.1 mm	1.1 mm
Maximum supply voltage (Vsup)	5.5 V	1.89 V
Minimum supply voltage (Vsup)	2.97 V	1.71 V
Nominal supply voltage (Vsup)	3.3 V	1.8 V
surface mount	YES	YES
technology	CMOS	CMOS
Temperature level	INDUSTRIAL	INDUSTRIAL
Terminal surface	TIN LEAD	TIN LEAD
Terminal form	GULL WING	GULL WING
Terminal pitch	0.5 mm	0.5 mm
Terminal location	DUAL	DUAL
Maximum time at peak reflow temperature	20	20
width	3 mm	3 mm

Recommended Resources

Analog voltmeter circuit with digital input

Converter circuit with 12V input and 9V, 7.5V or 6V output

Automatic cycle intermittent lubrication circuit for machine tools

Lighting bulb life extension device circuit

SCR overcurrent protection circuit using Hall element

audio noise generator circuit

Shortcut: A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW AX AY AZ B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR BS BT BU BV BW BX BY BZ C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF CG CH CI CJ CK CL CM CN CO CP CQ CR CS CT CU CV CW CX CY CZ D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR DS DT DU DV DW DX DZ

Popular Components