Texas Instruments NE556DR, NE556D, NE556N, JM38510-10902BCA, SA556D Datasheet

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NE556, SA556, SE556

 

DUAL PRECISION TIMERS

 

SLFS023C ± APRIL 1978 ± REVISED DECEMBER 1999

 

 

 

 

 

 

 

D Two Precision Timing Circuits per Package

NE556, SA556 . . . D, OR N PACKAGE

D Astable or Monostable Operation

SE556 . . . J PACKAGE

 

 

(TOP VIEW)

 

 

 

 

 

 

 

D TTL-Compatible Output Can Sink or Source

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Up to 150 mA

1DISCH

 

1

14

 

VCC

1THRES

 

 

D Active Pullup or Pulldown

 

2

13

 

2DISCH

1CONT

 

 

2THRES

D Designed to be Interchangeable With

 

3

12

 

1RESET

 

4

11

 

2CONT

Signetics NE556, SA556, and SE556

 

 

1OUT

 

5

10

 

2RESET

D Applications Include:

 

 

1TRIG

 

6

9

 

2OUT

 

 

± Precision Timers From Microseconds to

 

 

GND

 

7

8

 

2TRIG

 

 

Hours

 

 

 

 

 

 

 

 

 

± Pulse-Shaping CIrcuits

 

 

 

 

 

 

 

± Missing-Pulse Detectors

 

 

 

 

 

 

 

± Tone-Burst Generators

 

 

 

 

 

 

 

± Pulse-Width Modulators

 

 

 

 

 

 

 

± Pulse-Position Modulators

 

 

 

 

 

 

 

± Sequential Timers

 

 

 

 

 

 

 

± Pulse Generators

 

 

 

 

 

 

 

± Frequency Dividers

 

 

 

 

 

 

 

± Application Timers

 

 

 

 

 

 

 

± Industrial Controls

 

 

 

 

 

 

 

± Touch-Tone Encoders

 

 

 

 

 

 

 

description

These devices provide two independent timing circuits of the NE555, SA555, or SE555 type in each package. These circuits can be operated in the astable or the monostable mode with external resistor-capacitor (RC) timing control. The basic timing provided by the RC time constant can be controlled actively by modulating the bias of the control-voltage input.

The threshold (THRES) and trigger (TRIG) levels are normally two-thirds and one-third, respectively, of VCC. These levels can be altered by using the control-voltage (CONT) terminal. When the trigger input falls below trigger level, the flip-flop is set and the output goes high. If the trigger input is above the trigger level and the threshold input is above the threshold level, the flip-flop is reset and the output is low. The reset (RESET) input can override all other inputs and can be used to initiate a new timing cycle. When the reset input goes low, the flip-flop is reset and the output goes low. When the output is low, a low-impedance path is provided between the discharge (DISCH) terminal and ground (GND).

The NE556 is characterized for operation from 0°C to 70°C. The SA556 is characterized for operation from ±40°C to 85°C, and the SE556 is characterized for operation over the full military range of ±55°C to 125°C.

AVAILABLE OPTIONS

 

VT (MAX)

PACKAGED DEVICES

 

TA

 

 

 

SMALL OUTLINE

CERAMIC DIP

PLASTIC DIP

VCC = 15 V

 

(D)

(J)

(N)

 

 

 

 

 

 

 

0°C to 70°C

11.2 V

NE556D

±

NE556N

 

 

 

 

 

±40°C to 85°C

11.2 V

SA556D

±

SA556N

 

 

 

 

 

±55°C to 125°C

10.6 V

±

SE556J

±

 

 

 

 

 

The D package is available taped and reeled. Add the suffix R to the device type (e.g., NE556DR).

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

Copyright 1999, Texas Instruments Incorporated

On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters.

POST OFFICE BOX 655303 DALLAS, TEXAS 75265

1

Texas Instruments NE556DR, NE556D, NE556N, JM38510-10902BCA, SA556D Datasheet

NE556, SA556, SE556

DUAL PRECISION TIMERS

SLFS023C ± APRIL 1978 ± REVISED DECEMBER 1999

FUNCTION TABLE (each timer)

 

RESET

TRIGGER VOLTAGE²

THRESHOLD VOLTAGE²

OUTPUT

DISCHARGE SWITCH

 

Low

 

 

Irrelevant

 

 

Irrelevant

Low

On

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

High

 

 

< 1/3 VDD

 

 

Irrelevant

High

Off

 

High

 

 

> 1/3 VDD

 

 

> 2/3 VDD

Low

On

 

High

 

 

> 1/3 VDD

 

 

> 2/3 VDD

As previously established

 

² Voltage levels shown are nominal.

 

 

 

 

 

 

 

 

 

 

functional block diagram, each timer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VCC

 

 

 

RESET

 

 

 

 

 

 

 

 

 

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

THRES

 

 

 

 

 

 

 

 

 

 

R 1

 

OUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

 

 

 

 

 

S

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TRIG

R

DISCH

GND

RESET can override TRIG, which can override THRES.

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)³

Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . .

. . . . . . . . . . 18 V

Input voltage (CONT, RESET, THRES, and TRIG) . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . .

. . . . . . . . . VCC

Output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . .

. . . . . ±225 mA

Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

See Dissipation Rating Table

Package thermal impedance, θJA (see Note 2): D package . . . . . . . . . . . . . . . .

. . . . . . . . . . . .

. . . . . . 86°C/W

N package . . . . . . . . . . . . . . . .

. . . . . . . . . . . .

. . . . . . 80°C/W

Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: J package . .

. . . . . . . . . . . .

. . . . . . . 300°C

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D or N package . . . . . . . . .

. . . . . . . 260°C

Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . .

±65°C to 150°C

³Stresses beyond those listed under ªabsolute maximum ratingsº 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 under ªrecommended operating conditionsº is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. All voltage values are with respect to network ground terminal.

2. The package thermal impedance is calculated in accordance with JESD 51.

DISSIPATION RATING TABLE

PACKAGE

TA 25°C

DERATING FACTOR

TA = 70°C

TA = 85°C

TA = 125°C

 

POWER RATING

ABOVE TA = 25°C

POWER RATING

POWER RATING

POWER RATING

 

 

 

J

1375 mW

11.0 mW/°C

880 mW

715 mW

275 mW

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

POST OFFICE BOX 655303 DALLAS, TEXAS 75265

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