ALD2502 datasheet, PDF - EEWORLD Datasheet

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ALD2502: DescriptionRECTANGULAR, 1.5 MHz, TIMER, PDSO8; Categoryaccessories; File Size27KB，4 Pages; ManufacturerALD [Advanced Linear Devices]

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ALD2502 Overview

RECTANGULAR, 1.5 MHz, TIMER, PDSO8

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DVANCED

INEAR

EVICES,

NC.

ALD1502/ALD2502

SINGLE/DUAL PRECISION HIGH SPEED MICROPOWER TIMER

GENERAL DESCRIPTION

The ALD1502/ALD2502 timers are high performance single/dual mono-

lithic timing circuits built with advanced silicon gate CMOS technology.

They offer the benefits of high input impedance, thereby allowing smaller

timing capacitors and a longer timing cycle; high speed, with typical cycle

time of 400ns; low power dissipation for battery operated environment;

reduced supply current spikes, allowing smaller and lower cost decoupling

capacitors.

Each timer is capable of producing accurate time delays and oscillations in

both monostable and astable operation, and operates in the one-shot

(monostable) mode or 50% duty cycle free running oscillation mode with a

single resistor and one capacitor. The inputs and outputs are fully

compatible with CMOS, NMOS or TTL logic.

There are three matched internal resistors (approximately 200KΩ each)

that set the threshold and trigger levels at two-thirds and one-third respec-

tively of V

These levels can be adjusted by using the control terminal.

When the trigger input is below the trigger level, the output is in the high

state and sourcing 2mA. When the threshold input is above the threshold

level at the same time the trigger input is above the trigger level, the internal

flip-flop is reset, the output goes to the low state and sinks up to 10mA. The

reset input overrides all other inputs and when it is active (reset voltage less

than 1V), the output is in the low state.

FEATURES

•

High speed operation -- 2.5MHz typical oscillation at 5V

High discharge sinking current of 80mA at 5V

Guaranteed low operating supply voltage of 2V to 12V

Functional equivalent to and same pin-out as NE555/NE556

with greatly expanded high and low frequency ranges

High speed, low power, monolithic CMOS technology

Low supply current 50µA typical for ALD1502

and100µA typical for ALD2502

Extremely low trigger, threshold and reset currents 10pA typical

Operates in both monostable and astable modes

Fixed 50% duty cycle or adjustable duty cycle

CMOS, NMOS and TTL compatible input/output

Low supply current spikes

APPLICATIONS

•

High speed one-shot (monostable)

pulse generation

Precision timing

Sequential timing

Long delay timer

Pulse width and pulse position

modulation

• Missing pulse detector

• Frequency divider

• Synchronized timer

•

PIN CONFIGURATION

GND

TRIG

OUT

RST

TOP VIEW

DA, PA, SA PACKAGE

DISC

THRES

CONT

DSC

THRES

CONT

RST

OUT

TRIG

GND

TOP VIEW

DB, PB, SB PACKAGE

DSC

THRES

CONT

RST

OUT

TRIG

BLOCK DIAGRAM (EACH TIMER)

(8)

ORDERING INFORMATION

Operating Temperature Range *

-55°C to +125°C

0°C to +70°C

8-Pin

CERDIP Package

ALD1502 DA

14-Pin

CERDIP Package

ALD2502 DB

8-Pin Small Outline

Package (SOIC)

ALD1502 SA

8-Pin Plastic Dip

Package

ALD1502PA

THRESHOLD

(6)

CONTROL

(5)

TRIGGER

(2)

RESET

(4)

OUTPUT

(3)

DISCHARGE

(7)

14-Pin Small Outline 14-Pin Plastic Dip

Package (SOIC)

Package

ALD2502 SB

ALD2502 PB

GND

(1)

* Contact factory for industrial temperature range

ALD2502 Related Products

	ALD2502	ALD1502DA	ALD1502	ALD1502PA	ALD1502SA	ALD2502DB	ALD2502PB	ALD2502SB
Description	RECTANGULAR, 1.5 MHz, TIMER, PDSO8	RECTANGULAR, 1.5 MHz, TIMER, PDSO8	RECTANGULAR, 1.5 MHz, TIMER, PDSO8	RECTANGULAR, 1.5 MHz, TIMER, PDSO8	RECTANGULAR, 1.5 MHz, TIMER, PDSO8	RECTANGULAR, 1.5 MHz, TIMER, PDSO8	DUAL RECTANGULAR, 1.5 MHz, TIMER, PDIP14	TIMER
Is it lead-free?	-	Contains lead	-	Contains lead	Contains lead	Contains lead	Contains lead	Contains lead
Is it Rohs certified?	-	incompatible	-	incompatible	incompatible	incompatible	incompatible	incompatible
Parts packaging code	-	DIP	-	DIP	SOIC	DIP	DIP	SOIC
package instruction	-	DIP, DIP8,.3	-	DIP, DIP8,.3	SOP, SOP8,.25	DIP, DIP14,.3	DIP, DIP14,.3	SOP, SOP14,.3
Contacts	-	8	-	8	8	14	14	14
Reach Compliance Code	-	unknow	-	unknow	unknow	unknow	unknow	unknow
ECCN code	-	EAR99	-	EAR99	EAR99	EAR99	EAR99	EAR99
Analog Integrated Circuits - Other Types	-	RECTANGULAR	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
JESD-30 code	-	R-GDIP-T8	-	R-PDIP-T8	R-PDSO-G8	R-GDIP-T14	R-PDIP-T14	R-PDSO-G14
JESD-609 code	-	e0	-	e0	e0	e0	e0	e0
Number of functions	-	1	-	1	1	2	2	2
Number of terminals	-	8	-	8	8	14	14	14
Maximum operating temperature	-	125 °C	-	70 °C	70 °C	125 °C	70 °C	70 °C
Maximum output frequency	-	1.5 GHz	-	1.5 GHz	1.5 GHz	1.5 GHz	1.5 GHz	1.5 GHz
Package body material	-	CERAMIC, GLASS-SEALED	-	PLASTIC/EPOXY	PLASTIC/EPOXY	CERAMIC, GLASS-SEALED	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	-	DIP	-	DIP	SOP	DIP	DIP	SOP
Encapsulate equivalent code	-	DIP8,.3	-	DIP8,.3	SOP8,.25	DIP14,.3	DIP14,.3	SOP14,.3
Package shape	-	RECTANGULAR	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	-	IN-LINE	-	IN-LINE	SMALL OUTLINE	IN-LINE	IN-LINE	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	-	NOT SPECIFIED	-	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
power supply	-	5 V	-	5 V	5 V	5 V	5 V	5 V
Certification status	-	Not Qualified	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum supply current (Isup)	-	0.09 mA	-	0.09 mA	0.09 mA	0.18 mA	0.18 mA	0.18 mA
Maximum supply voltage (Vsup)	-	12 V	-	12 V	12 V	12 V	12 V	12 V
Minimum supply voltage (Vsup)	-	2 V	-	2 V	2 V	2 V	2 V	2 V
Nominal supply voltage (Vsup)	-	5 V	-	5 V	5 V	5 V	5 V	5 V
surface mount	-	NO	-	NO	YES	NO	NO	YES
technology	-	CMOS	-	CMOS	CMOS	CMOS	CMOS	CMOS
Temperature level	-	MILITARY	-	COMMERCIAL	COMMERCIAL	MILITARY	COMMERCIAL	COMMERCIAL
Terminal surface	-	Tin/Lead (Sn/Pb)	-	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)
Terminal form	-	THROUGH-HOLE	-	THROUGH-HOLE	GULL WING	THROUGH-HOLE	THROUGH-HOLE	GULL WING
Terminal pitch	-	2.54 mm	-	2.54 mm	1.27 mm	2.54 mm	2.54 mm	1.27 mm
Terminal location	-	DUAL	-	DUAL	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	-	NOT SPECIFIED	-	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
Base Number Matches	-	1	-	1	1	1	1	1

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