ALD555-1PAL Advanced Linear Devices Inc, ALD555-1PAL Datasheet

Timers & Support Products 2% CMOS Timer 2MHz

ALD555-1PAL

Manufacturer Part Number

ALD555-1PAL

Description

Timers & Support Products 2% CMOS Timer 2MHz

Manufacturer

Advanced Linear Devices Inc

Type

Timersr

Datasheet

1.ALD555SAL.pdf (7 pages)

Specifications of ALD555-1PAL

Maximum Operating Temperature

125 C

Minimum Operating Temperature

- 55 C

Mounting Style

Through Hole

Package / Case

PDIP-8

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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GENERAL DESCRIPTION

The ALD555 timer is a high performance monolithic timing circuit built

with advanced silicon gate CMOS technology. It offers the benefits of

high input impedance, thereby allowing smaller timing capacitors and

longer timing cycle; high speed, with typical cycle time of 500ns; low

power dissipation for battery operated environment; reduced supply

current spikes, allowing smaller and lower cost decoupling capacitors.

It is capable of producing accurate time delays and oscillations in both

monostable and astable operation. It operates in the one-shot (mono-

stable) 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 respectively of V +

control terminal (pin 5). When the trigger input is below the trigger level,

the output is in the high state and sourcing 2mA. When 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

• Functional equivalent to NE555 with greatly expanded high

• High speed, low power, monolithic CMOS technology

• Low supply current: 100

• Extremely low trigger, threshold and reset currents:1pA typical

• High speed operation -- 2MHz oscillation

• Low operating supply voltage of 2 to 12V

• Operates in both monostable and astable modes

• Fixed 50% duty cycle or adjustable duty cycle

• CMOS, NMOS and TTL compatible input/output

• High discharge sinking current of 80mA

• Low supply current spikes

* Contact factory for leaded (non-RoHS) or high temperature versions.

ORDERING INFORMATION (“L” suffix denotes lead-free (RoHS))

0°C to +70°C

8-Pin Small Outline

Package (SOIC)

ALD555SAL

and low frequency ranges

INEAR

DVANCED

EVICES,

Operating Temperature Range *

NC.

These levels can be adjusted by using the

A typical

0°C to +70°C

8-Pin Plastic

DIP Package

ALD555PAL

HIGH SPEED CMOS TIMER

-55°C to +125°C

8-Pin CERDIP

Package

ALD555DA

www.aldinc.com

APPLICATIONS

PIN CONFIGURATION

BLOCK DIAGRAM

•

• Precision timing

• Sequential timing

• Long delay timer

• Pulse width and pulse position

• Missing pulse detector

• Frequency divider

THRESHOLD

CONTROL

TRIGGER

High speed one-shot (monostable)

pulse generation

modulation

GROUND

TRIGGER

OUTPUT

(6)

(5)

(2)

RESET

GND

(1)

SAL, PAL, DA PACKAGES

(8)

RESET

(4)

DISCHARGE

THRESHOLD

CONTROL

ALD555

OUTPUT

DISCHARGE

(3)

(7)

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ALD555-1PAL Summary of contents

Page 1

... EVICES, NC. GENERAL DESCRIPTION The ALD555 timer is a high performance monolithic timing circuit built with advanced silicon gate CMOS technology. It offers the benefits of high input impedance, thereby allowing smaller timing capacitors and longer timing cycle; high speed, with typical cycle time of 500ns; low power dissipation for battery operated environment ...

Page 2

... Rise Time of Output 1 Fall Time of Output Discharge Transistor Leakage Current Discharge Voltage Drop Maximum Frequency Astable Mode Notes: 1 Sample tested parameters. 2 Consists of junction leakage currents with strong temperature dependence. ALD555 SAL, PAL packages DA package Symbol Min Typ 100 S t 1.0 err ∆ ...

Page 3

... FREQUENCY (Hz) TIME DELAY IN THE MONOSTABLE MODE AS A FUNCTION 25° 100 µF 10 µF 1 µF 100 100 pF 100ns 1µs 10µs 100µs 1ms 10ms 100ms TIME DELAY ALD555 + 0.2 0.5 1 AND 25° 10M 100M AND 10s 100s Advanced Linear Devices ...

Page 4

... OUTPUT VOLTAGE (V) ASTABLE MODE OPERATION 50% DUTY CYCLE Frequency (1.4 R TRIGGER INPUT DELAYED PULSE OUTPUT RESET ALD555 + 12V + 0.2 0.5 1.0 TYPICAL APPLICATIONS + V 8 0.1µ MONOSTABLE MODE OPERATION (ONE SHOT PULSE) Pulse Delay ...

Page 5

... S (45° (45° ALD555 SOIC-8 PACKAGE DRAWING 8 Pin Plastic SOIC Package E Dim D ø ø Advanced Linear Devices Millimeters Min Max Min 1.75 0.053 1.35 0.25 0.004 0.10 0.45 0.014 0.35 0.25 0.007 0.18 5.00 0.185 4.69 4.05 0.140 3.50 1.27 BSC ...

Page 6

... ø ALD555 PDIP-8 PACKAGE DRAWING 8 Pin Plastic DIP Package Dim Min 3. 0. 0.20 c 9.40 D-8 5. 2.79 S-8 1.02 ø Advanced Linear Devices Millimeters Inches Max Min 5.08 0.105 1.27 0.015 2.03 0.050 1.65 0.035 0.51 ...

Page 7

... ø ALD555 CERDIP-8 PACKAGE DRAWING 8 Pin CERDIP Package Dim D Ø Advanced Linear Devices Millimeters Inches Min Max Min 3.55 5.08 0.140 1.27 2.16 0.050 0.97 1.65 0.038 0.36 0.58 0.014 0.20 0.38 0.008 -- 10.29 -- 5.59 7.87 0.220 7.73 8.26 0.290 0.100 BSC 2 ...

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