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Philips Semiconductors Linear Products
Product specification
Dual timer
NE/SA/SE556/NE556-1
DESCRIPTION
Both the 556 and 556-1 Dual Monolithic timing circuits are highly stable controllers capable of producing accurate time delays or oscillation. The 556 and 556-1 are a dual 555. Timing is provided by an external resistor and capacitor for each timing function. The two timers operate independently of each other, sharing only VCC and ground. The circuits may be triggered and reset on falling waveforms. The output structures may sink or source 200mA.
PIN CONFIGURATION
D, F, N Packages
DISCHARGE THRESHOLD CONTROL VOLTAGE RESET 1 2 3 4 5 6 7 14 13 12 11 10 9 8 VCC DISCHARGE THRESHOLD CONTROL VOLTAGE RESET OUTPUT TRIGGER
FEATURES
* Turn-off time less than 2s (556-1) * Maximum operating frequency >500kHz (556-1) * Timing from microseconds to hours * Replaces two 555 timers * Operates in both astable and monostable modes * High output current * Adjustable duty cycle * TTL compatible * Temperature stability of 0.005%/C * SE556-1 compliant to MIL-STD or JAN
APPLICATIONS
OUTPUT TRIGGER GND
* Precision timing * Sequential timing * Pulse shaping
* Pulse generator * Missing pulse detector * Tone burst generator * Pulse width modulation * Time delay generator * Frequency division * Touch-Tone(R)encoder * Industrial controls * Pulse position modulation * Appliance timing * Traffic light control
BLOCK DIAGRAM
1 DISCHARGE 2 COMP CONTROL VOLTAGE RESET 3 4 COMP 11 10 RESET CONTROL VOLTAGE 14 13 VCC DISCHARGE
THRESHOLD
12 THRESHOLD
FLIP FLOP
FLIP FLOP
OUTPUT
5
9
OUTPUT
TRIGGER
6
COMP
COMP
8 TRIGGER
GROUND
(R)Touch-Tone
7
is a registered trademark of AT&T
August 31, 1994
353
853-0035 13721
Philips Semiconductors Linear Products
Product specification
Dual timer
NE/SA/SE556/NE556-1
EQUIVALENT SCHEMATIC (Shown for one circuit only)
CONTROL VOLTAGE VCC R1 4.7K R2 330 R3 4.7K R4 1K R7 5K R12 6.8K
Q5
Q6 Q7 Q8
Q9 Q19
Q21 Q22 R13 3.3K
THRESHOLD
Q1 Q2 Q3
Q4
R10 3.2 K C CB Q18 E
OUTPUT Q23 B
R5 10K TRIGGER Q10 Q25
Q11 Q12 Q13
R8 5K
R11 4.7K Q17 Q16
Q20 R14 220 Q24
RESET DISCHARGE GND Q14
Q15 R6 100K R16 100 R9 5K R15 4.7K
ORDERING INFORMATION
DESCRIPTION 14-Pin Plastic Small Outline (SO) Package 14-Pin Ceramic Dual In-Line Package (CERDIP) 14-Pin Plastic Dual In-Line Package (DIP) 14-Pin Ceramic Dual In-Line Package (CERDIP) 14-Pin Plastic Dual In-Line Package (DIP) 14-Pin Plastic Dual In-Line Package (DIP) 14-Pin Ceramic Dual In-Line Package (CERDIP) 14-Pin Plastic Dual In-Line Package (DIP) TEMPERATURE RANGE 0 to +70C 0 to +70C 0 to +70C 0 to +70C 0 to +70C -40C to +85C -55C to +125C -55C to +125C ORDER CODE NE556D NE556F NE556N NE556-1F NE556-1N SA556N SE556F SE556N DWG # 0175D 0581B 0405B 0581B 0405B 0405B 0581B 0405B
ABSOLUTE MAXIMUM RATINGS
SYMBOL VCC Supply voltage NE/SA556, NE556-1 SE556 PD TA Maximum allowable power dissipation1 Operating temperature range NE556-1, NE556 SA556 SE556 TSTG TSOLD Storage temperature range Lead soldering temperature (10sec max) 0 to +70 -40 to +85 -55 to +125 -65 to +150 +300 C C C C C +16 +18 800 V V mW PARAMETER RATING UNIT
NOTES: 1. The junction temperature must be kept below 125C for the D package and below 150C for the N and F packages. At ambient temperatures above 25C, where this limit would be exceeded, the Maximum Allowable Power Dissipation must be derated by the following: D package 115C/W N package 80C/W F package 100C/W
August 31, 1994
354
Philips Semiconductors Linear Products
Product specification
Dual timer
NE/SA/SE556/NE556-1
ELECTRICAL CHARACTERISTICS
TA=25C, VCC=+5V to +15V, unless otherwise specified. SYMBOL VCC ICC PARAMETER Supply voltage VCC=5V, RL= Supply current (low state)1 VCC=15V, RL= Timing error (monostable) tM tM/T tM/VS tA tA/T tA/VS VC Initial accuracy2 Drift with temperature Drift with supply voltage Timing error (astable) Initial accuracy2 Drift with temperature Drift with supply voltage Control voltage level Threshold voltage VTH VCC=5V ITH VTRIG VCC=5V ITRIG VRESET IRESET Trigger current Reset voltage5 Reset current Reset current Output voltage (low) SE556 VOL NE/SA556 NE556-1 Output voltage (low) ISINK=200mA VCC=5V ISINK=8mA ISINK=5mA VCC=15V ISOURCE=200mA VOH Output voltage (high) ISOURCE=100mA VCC=5V ISOURCE=100mA tOFF tR tF Turn-off time6 NE556-1 Rise time of output Fall time of output Discharge leakage current VRESET=VCC 3.0 3.3 0.5 100 100 20 2.0 200 200 100 2.75 3.3 0.5 100 100 20 300 300 100 s ns ns nA 13.0 12.5 13.3 12.75 12.5 13.3 V 0.1 0.05 0.2 0.15 0.25 0.15 0.3 0.25 2.5 ISINK=100mA VRESET=0.4V VRESET=0V VCC=15V ISINK=10mA ISINK=50mA 0.1 0.4 2.0 0.15 0.5 2.25 2.0 2.0 2.5 V 3.2 2.5 0.1 0.4 0.25 0.75 V VTRIG=0V 0.4 0.4 1.45 1.67 0.5 0.7 0.1 0.4 1.9 0.9 1.0 0.4 1.0 0.4 0.4 1.1 1.67 0.5 0.7 0.1 0.4 2.2 2.0 1.0 0.6 1.5 V A V mA mA Threshold current3 VCC = 15V, VTH = 10.5V VCC=15V 4.8 Trigger voltage 2.7 3.33 30 5.0 4.0 250 5.2 4.5 2.4 3.33 30 5.0 4.2 250 5.6 V nA V VCC=15V VCC=5V VCC=15V 9.6 2.9 9.4 RA, RB=1k to 100k C=0.F VCC=15V 4 400 0.15 10.0 3.33 10.0 6 500 0.6 10.4 3.8 10.6 9.0 2.6 8.8 5 400 0.3 10.0 3.33 10.0 13 500 1 11.0 4.0 11.2 % ppm/C %/V V V RA=2k to 100k C=0.1F T=1.1 RC 0.5 30 0.05 2.0 100 0.2 0.75 50 0.1 3.0 150 0.5 % ppm/C %/V 20 24 20 30 mA TEST CONDITIONS Min 4.5 6 SE556 Typ Max 18 10 Min 4.5 6 NE/SA556 NE556-1 Typ Max 16 12 V mA UNIT
August 31, 1994
355
Philips Semiconductors Linear Products
Product specification
Dual timer
NE/SA/SE556/NE556-1
ELECTRICAL CHARACTERISTICS (Continued)
SYMBOL PARAMETER Matching characteristics4 Initial accuracy2 Drift with temperature Drift with supply voltage 0.5 10 0.1 0.2 1.0 1.0 10 0.2 0.5 2.0 % ppm/C %/V TEST CONDITIONS Min SE556/556-1 Typ Max NE/SA556/SE556C NE556-1/SE556-1C Min Typ Max UNIT
NOTES: 1. Supply current when output is high is typically 1.0mA less. 2. Tested at VCC=5V and VCC=15V. 3. This will determine maximum value of RA+RB. For 15V operation, the max total R=10M, and for 5V operation, the maximum total R=3.4M. 4. Matching characteristics refer to the difference between performance characteristics for each timer section in the monostable mode. 5. Specified with trigger input high. In order to guarantee reset the voltage at reset pin must be less than or equal to 0.4V. To disable reset function, the voltage at reset pin has to be greater than 1V. 6. Time measured from a positive-going input pulse from 0 to 0.4 VCC into the threshold to the drop from high to low of the output. Trigger is tied to threshold.
TYPICAL APPLICATIONS
One feature of the dual timer is that by utilizing both halves it is possible to obtain sequential timing. By connecting the output of the first half to the input of the second half via a 0.001F coupling capacitor sequential timing may be obtained. Delay t1 is determined by the first half and t2 by the second half delay.
VCC VCC
The first half of the timer is started by momentarily connecting Pin 6 to ground. When it is timed out (determined by 1.1R1C1) the second half begins. Its duration is determined by 1.1R2C2.
VCC
VCC
VCC
R1 10k 1M 4 1 10 14 12 13 2 .001 INPUT C1 1F 6 7 11 .01 NOTE: All resistor values are in . 3 .01 556 8
R2 130k 10k
C2 50F
.001 5 9 OUTPUT 1 OUTPUT 2
Sequential Timer
August 31, 1994
356
Philips Semiconductors Linear Products
Product specification
Dual timer
NE/SA/SE556/NE556-1
TYPICAL PERFORMANCE CHARACTERISTICS
Minimum Pulse Width Required for Triggering
150 MINIMUM PULSE WIDTH (ns) SUPPLY CURRENT -- mA 125 100 75 50 25 +125oC 0 0 0.1 0.2 0.3 0.4(XVCC) 0 5.0 -55oC 0 oC 10.0
Supply Current VS Supply Voltage
2.0 +125oC VCC V OUT -- VOLTS 8.0 +25oC 6.0 55oC 4.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 10.0 SUPPLY VOLTAGE -- VOLTS 15.0 0 1.0
High Output Voltage Drop vs Output Source Current
55oC +25oC +125oC
+25oC +70oC
2.0
5V = VCC = 15V 2.0 5.0 10 20 50 100
LOWEST VOLTAGE LEVEL OF TRIGGER PULSE
ISOURCE -- mA
Low Output Voltage vs Output Sink Current
10
VCC = 5V 10
Low Output Voltage vs Output Sink Current
10 VCC = 10V -55oC VOUT -- VOLTS VOUT --VOLTS
Low Output Voltae vs Output Sink Current
VCC = 15V
V -- VOLTS OUT
1.0
55oC
1.0
+25oC
1.0
+25oC
+25oC 0.1 +125oC -55oC
+125oC
0.1
+125oC
0.1
0.01 1.0
0.01
2.0
5.0
10
20
50 100
1.0
2.0
5.0
10
20
50
100
0.01 1.0
2.0
5.0
10
20
50 100
ISINK -- mA
ISINK -- mA
ISINK -- mA
Delay Time vs Temperature
1.015 NORMALIZED DELAY TIME NORMALIZED DELAY TIME 1.010 1.005 1.000 0.995 0.990 0.985 -50 25 0 +25 +50 +75 +100 +125 TEMPERATURE -- oC 1.015 1.010 1.005 1.000 0.995 0.990 0.985 0
Delay Time vs Supply Voltage
Propagation Delay vs Voltage Level of Trigger Pulse
300 250 -55oC PROPAGATION -- ns 200 0 oC 150 100
+25oC +70oC +125oC
50 0 5 10 15 20 0
0.1
0.2
0.3
0.4
SUPPLY VOLTAGE -- V
LOWEST VOLTAGE LEVEL OF TRIGGER PULSE -- XVCC
August 31, 1994
357

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