Name: KA555
SKU: KA555
Price: 0.92882 USD
Availability: InStock

www.fairchildsemi.com

Rev. 1.0.2

Features

• High Current Drive Capability (200mA)

• Adjustable Duty Cycle

• Temperature Stability of 0.005%/°C

• Timing From Msec to Hours

• Turn Off Time Less Than 2Msec

Applications

• Precision Timing

• Pulse Generation

• Time Delay Generation

• Sequential Timing

Description

The KA555 is a highly stable controller capable of

producing accurate timing pulses. With monos table

operation, the time delay is controlled by one external

resistor and one capacitor. With astable operation, the

frequency and duty cycle are accurately controlled with two

external resistors and one capacitor.

8-DIP

8-SOP

1

Internal Block Diagram

F/F

OutPut

Stage

1

7

5

2

3

4

6

8

RRR

Comp.

Discharging Tr.

Vref

Vcc

Discharge

Threshold

Control

Voltage

GND

Trigger

Output

Reset

KA555

Single Timer

KA555

2

Absolute Maximum Ratings (T

A

= 25°

°°

°C)

Parameter Symbol Value Unit

Supply Voltage V

CC

16 V

Lead Temperature (Soldering 10sec) T

LEAD

300 °C

Power Dissipation P

D

600 mW

Operating Temperature Range

KA555/KA555I

T

OPR

0 ~ +70 / -40 ~ +85 °C

Storage Temperature Range T

STG

- 65 ~ +150 °C

KA555

3

Electrical Characteristics

(T

A

= 25°C, V

CC

= 5 ~ 15V, unless otherwise specified)

Notes:

1. Supply current when output is high is typically 1mA less at V

CC

= 5V

2. Tested at V

CC

= 5.0V and V

CC

= 15V

3. This will determine maximum value of R

A

+ R

B

for 15V operation, the max. total R = 20MΩ, and for 5V operation the max. total

R = 6.7MΩ

Parameter Symbol Conditions Min. Typ. Max. Unit

Supply Voltage V

CC

-4.5-16V

Supply Current *

1

(Low Stable) I

CC

V

CC

= 5V, R

L

= ∞ -36 mA

V

CC

= 15V, R

L

= ∞ -7.515 mA

Timing Error *

2

(Monos Table)

Initial Accuracy

Drift with Temperature

Drift with Supply Voltage

ACCUR

∆t/∆T

∆t/∆V

CC

R

A

= 1KΩ to100KΩ

C = 0.1µF

-1.0

50

0.1

3.0

0.5

%

ppm/°C

%/V

Timing Error *

2

(Astable)

Initial Accuracy

Drift with Temperature

Drift with Supply Voltage

ACCUR

∆t/∆T

∆t/∆V

CC

R

A

= 1KΩ to 100KΩ

C = 0.1µF

-

2.25

150

0.3

-%

ppm/°C

%/V

Control Voltage V

CC

V

CC

= 15V 9.0 10.0 11.0 V

V

CC

= 5V 2.6 3.33 4.0 V

Threshold Voltage V

TH

V

CC

= 15 V - 10.0 - V

V

CC

= 5V - 3.33 - V

Threshold Current *

3

I

TH

- - 0.1 0.25 µA

Trigger Voltage

V

TR

V

CC

= 5V 1.1 1.67 2.2 V

V

CC

= 15V 4.5 5 5.6 V

Trigger Current I

TR

V

TR

= 0V 0.01 2.0 µA

Reset Voltage V

RST

- 0.4 0.7 1.0 V

Reset Current I

RST

- 0.1 0.4 mA

Low Output Voltage V

OL

V

CC

= 15V

I

SINK

= 10mA

I

SINK

= 50mA

-0.06

0.3

0.25

0.75

V

CC

= 5V

I

SINK

= 5mA

-

0.05 0.35 V

High Output Voltage V

OH

V

CC

= 15V

I

SOURCE

= 200mA

I

SOURCE

= 100mA 12.75

12.5

13.3

-V

V

CC

= 5V

I

SOURCE

= 100mA 2.75 3.3

-

V

Rise Time of Output t

R

- - 100 - ns

Fall Time of Output t

F

- - 100 - ns

Discharge Leakage Current I

LKG

- - 20 100 nA

Part #	KA555
Description	IC OSC SINGLE TIMER 8-DIP
Category	IC
Availability	In Stock
Qty	49

Qty	Price
1 - 10	$0.92882
11 - 20	$0.73883
21 - 30	$0.69661
31 - 41	$0.64736
42 +	$0.57699

KA555

Related Items

Technical Document