Texas Instruments TLC556CDR, TLC556CD, TLC556MN, TLC556MJB, TLC556MJ Datasheet

NC±No internal connection

TLC556, TLC556Y

DUAL LinCMOS TIMERS

SLFS047B ± FEBRUARY 1984 ± REVISED SEPTEMBER 1997

DVery Low Power Consumption . . . 2 mW Typ at VDD = 5 V

DCapable of Operation in Astable Mode

DCMOS Output Capable of Swinging Rail to Rail

DHigh Output-Current Capability

Sink 100 mA Typ

Source 10 mA Typ

DOutput Fully Compatible With CMOS, TTL, and MOS

DLow Supply Current Reduces Spikes During Output Transitions

D, J, OR N PACKAGE

(TOP VIEW)

1 DISCH		1	14		VDD
1 THRES
		2	13		2 DISCH
1 CONT		3	12		2 THRES
1 RESET		4	11		2 CONT
1 OUT		5	10		2 RESET
1 TRIG		6	9		2 OUT
GND		7	8		2 TRIG

FK PACKAGE (TOP VIEW)

DSingle-Supply Operation From 2 V to 15 V

DFunctionally interchangeable With the NE556; Has Same Pinout

description

The TLC556 series are monolithic timing circuits fabricated using the TI LinCMOS process, which provides full compatibility with CMOS, TTL, and MOS logic and operates at frequencies up to 2 MHz. Accurate time delays and oscillations are possible with smaller, less-expensive timing capacitors than the NE556 because of the high input impedance. Power consumption is low across the full range of power supply voltages.

	THRES1	DISCH1	NC	V	DISCH2
				DD
1 CONT	3	2	1	20 19		2 THRES
	4				18
NC	5				17	NC
1 RESET	6				16	2 CONT
NC	7				15	NC
1 OUT	8				14	2 RESET
	9	10 11 12 13
	1 TRIG	GND	NC	2 TRIG	2 OUT

Like the NE556, the TLC556 has a trigger level approximately one-third of the supply voltage and

a threshold level approximately two-thirds of the supply voltage. These levels can be altered by use of the control voltage terminal. When the trigger input falls below the 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 input can override all other inputs and can be used to initiate a new timing cycle. If the reset input is low, the flip-flop is reset and the output is low. Whenever the output is low, a low-impedance path is provided between the discharge terminal and ground.

While the CMOS output is capable of sinking over 100 mA and sourcing over 10 mA, the TLC556 exhibits greatly reduced supply-current spikes during output transitions. This minimizes the need for the large decoupling capacitors required by the NE556.

These devices have internal electrostatic-discharge (ESD) protection circuits that prevent catastrophic failures at voltages up to 2000 V as tested under MIL-STD-883C, Method 3015. However, care should be exercised in handling these devices, as exposure to ESD may result in degradation of the device parametric performance.

All unused inputs should be tied to an appropriate logic level to prevent false triggering.

The TLC556C is characterized for operation from 0°C to 70°C. The TLC556I is characterized for operation from ±40°C to 85°C. The TLC556M is characterized for operation over the full military temperature range of ±55°C to 125°C.

LinCMOS is a trademark of Texas Instruments Incorporated.

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 1997, Texas Instruments Incorporated

POST OFFICE BOX 655303 •DALLAS, TEXAS 75265

1

TLC556, TLC556Y

DUAL LinCMOS TIMERS

SLFS047B ± FEBRUARY 1984 ± REVISED SEPTEMBER 1997

AVAILABLE OPTIONS

TA

VDD

PACKAGE

CHIP FORM

SMALL OUTLINE

CHIP CARRIER

CERAMIC DIP

PLASTIC DIP

RANGE

RANGE

(Y)

(D)

(FK)

(J)

(N)

O°C

2 V

to

to

TLC556CD

TLC556CN

TLC556Y

70°C

18 V

± 4O°C

3 V

to

to

TLC556lD

TLC556IN

85°C

18 V

± 55°C

5 V

to

to

TLC556MD

TLC556MFK

TLC556MJ

TLC556MN

125°C

18 V

The D package is available taped and reeled. Add the suffix R to the device type (e.g., TLC556CDR).

FUNCTION TABLE

RESET

TRIGGER

THRESHOLD

OUTPUT

DISCHARGE

VOLTAGE²

VOLTAGE²

VOLTAGE²

SWITCH

< MIN

Irrelevant

Irrelevant

L

On

> MAX

< MIN

Irrelevant

H

Off

>MAX

>MAX

>MAX

L

On

> MAX

> MAX

< MIN

As previously established

² For conditions shown as MIN or MAX, use the appropriate value specified under electrical characteristics.

functional block diagram (each timer)

VDD	CONT	RESET
	3
		4
14
R
2		R1	5
THRES		R 1
			OUT
		S
	R

6

TRIG

R

1

DISCH

7

GND

RESET can override TRIG and THRES.

TRIG can override THRES.

Pin numbers shown are for the D, J, or N packages.

2	POST OFFICE BOX 655303 •DALLAS, TEXAS 75265

TLC556, TLC556Y

DUAL LinCMOS TIMERS

SLFS047B ± FEBRUARY 1984 ± REVISED SEPTEMBER 1997

TLC556Y chip information

These chips, properly assembled, display characteristics similar to the TLC556 (see electrical table). Thermal compression or ultrasonic bonding may be used on the doped aluminum bonding pads. Chips may be mounted with conductive epoxy or a gold-silicon preform.

BONDING PAD ASSIGNMENTS

						CHIP THICKNESS: 15 TYPICAL
						BONDING PADS: 4 × 4 MINIMUM
						TJ max = 150°C
61						TOLERANCES ARE ± 10%
						ALL DIMENSIONS ARE IN MILS
						NO BACKSIDE METALLIZATION
						PIN (7) INTERNALLY CONNECTED
						TO BACKSIDE OF CHIP

	97
FUNCTIONAL BLOCK DIAGRAM (EACH TIMER)
VDD	CONT	RESET
	(3)
		(4)
(14)
	R
(2)		R1	(5)
THRESH		R 1
			OUT
		S
	R

(6)

TRIG R

(1)

DISCH

(7) GND

POST OFFICE BOX 655303 •DALLAS, TEXAS 75265

3

TLC556, TLC556Y

DUAL LinCMOS TIMERS

SLFS047B ± FEBRUARY 1984 ± REVISED SEPTEMBER 1997

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

TLC556C

TLC556I

TLC556M

UNIT

Supply voltage, VDD (see Note 1)

18

18

18

V

Input voltage range, VI

± 0.3 to VDD

± 0.3 to VDD

± 0.3 to VDD

V

Sink current, discharge or output

150

150

150

mA

Source current, output

15

15

15

mA

Continuous total power dissipation

See Dissipation Rating Table

Operating free-air temperature range

0 to 70

± 40 to 85

± 55 to 125

°C

Storage temperature range

± 65 to 150

± 65 to 150

± 65 to 150

°C

Case temperature for 60 seconds

FK package

260

°C

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

J package

300

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds

D or N package

260

260

NOTE 1: All voltage values are with respect to network ground terminal.

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

D

950 mW

7.6 mW/°C

608 mW

494 mW

N/A

FK

1375 mW

11.0 mW/°C

880 mW

715 mW

275 mW

J

1375 mW

11.0 mW/°C

880 mW

715 mW

275 mW

N

1150 mW

9.2 mW/°C

736 mW

598 mW

N/A

recommended operating conditions

		MIN	MAX	UNIT
Supply voltage, VDD		2	15	V
	TLC556C	0	70
				°C
Operating free-air temperature range, TA	TLC556I	± 40	85
	TLC556M	± 55	125

4	POST OFFICE BOX 655303 •DALLAS, TEXAS 75265

TLC556, TLC556Y

DUAL LinCMOS TIMERS

SLFS047B ± FEBRUARY 1984 ± REVISED SEPTEMBER 1997

electrical characteristics at specified free-air temperature, VDD = 2 V for TLC556C, VDD = 3 V for TLC556I

	PARAMETER	TEST	T ²		TLC556C			TLC556I		UNIT
		CONDITIONS	A	MIN	TYP	MAX	MIN	TYP	MAX
VIT	Input threshold voltage		25°C	0.95	1.33	1.65	1.6	2	2.4	V
			Full range	0.85		1.75	1.5		2.5
	Threshold current		25°C		10			10		pA
			MAX		75			150
V(trigger)	Trigger voltage		25°C	0.4	0.67	0.95	0.71	1	1.29	V
			Full range	0.3		1.05	0.61		1.39
I(trigger)	Trigger current		25°C		10			10		pA
			MAX		75			150
V(reset)	Reset voltage		25°C	0.4	1.1	1.5	0.4	1.1	1.5	V
			Full range	0.3		1.8	0.3		1.8
I(reset)	Reset current		25°C		10			10		pA
			MAX		75			150
	Control voltage (open circuit) as		MAX		66.7%			66.7%
	a percentage of supply voltage
	Discharge switch on-state volt-	IOL = 1 mA	25°C		0.04	0.2		0.03	0.2	V
	age		Full range			0.25			0.375
	Discharge switch off-state cur-		25°C		0.1			0.1		nA
	rent		MAX		0.5			120
VOH	High-level output voltage	IOH = ±300 A	25°C	1.5	1.9		1.5	1.9		V
			Full range	1.5			2.5
VOL	Low-level output voltage	IOL = 1 mA	25°C		0.07	0.3		0.07	0.3	V
			Full range			0.35			0.4
IDD	Supply current	See Note 2	25°C		130	500		130	500	A
			Full range			800			1000

² Full range is 0°C to 70°C for TLC556C and ± 40°C to 85°C for TLC556I.

NOTE 2: These values apply for the expected operating configurations in which THRES is connected directly to DISCH or TRIG.

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