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| NE556, SA556, SE556 DUAL PRECISION TIMERS SLFS023F - APRIL 1978 - REVISED MARCH 2003 D D D D D D Two Precision Timing Circuits Per Package Astable or Monostable Operation TTL-Compatible Output Can Sink or Source Up To 150 mA Active Pullup or Pulldown Designed to Be Interchangeable With Signetics NE556, SA556, and SE556 Applications Include: - Precision Timers From Microseconds to 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 NE556 . . . D, N, OR NS PACKAGE SA556 . . . D OR N PACKAGE SE556 . . . J PACKAGE (TOP VIEW) 1DISCH 1THRES 1CONT 1RESET 1OUT 1TRIG GND 1 2 3 4 5 6 7 14 13 12 11 10 9 8 VCC 2DISCH 2THRES 2CONT 2RESET 2OUT 2TRIG description/ordering information 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 normally are 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 RESET 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). ORDERING INFORMATION TA VT (MAX) VCC = 15 V PDIP (N) 0C to 70C 11.2 11 2 V SOIC (D) SOP (NS) -40C to 85C - 55C to 125C 11.2 V 10.6 10 6 V PDIP (N) CDIP (J) PACKAGE Tube of 25 Tube of 50 Reel of 2500 Reel of 2000 Tube of 25 Tube of 25 ORDERABLE PART NUMBER NE556N NE556D NE556DR NE556NSR SA556N SE556J SE556JB TOP-SIDE MARKING NE556N NE556 NE556 SA556N SE556J SE556JB Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 2003, 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. 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. POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 1 NE556, SA556, SE556 DUAL PRECISION TIMERS SLFS023F - APRIL 1978 - REVISED MARCH 2003 FUNCTION TABLE (each timer) RESET Low High High TRIGGER VOLTAGE Irrelevant <1/3 VDD >1/3 VDD THRESHOLD VOLTAGE Irrelevant Irrelevant >2/3 VDD OUTPUT Low High Low DISCHARGE SWITCH On Off On High >1/3 VDD <2/3 VDD Voltage levels shown are nominal. As previously established functional block diagram, each timer VCC RESET THRES CONT OUT TRIG DISCH GND RESET can override TRIG, which can override THRES. absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V Input voltage (CONT, RESET, THRES, and TRIG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VCC Output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225 mA Package thermal impedance, JA (see Notes 2 and 3): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80C/W NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . 76C/W Package thermal impedance, JC (see Notes 4 and 5): J package . . . . . . . . . . . . . . . . . . . . . . . . . 15.05C/W Operating virtual junction temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150C Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: J package . . . . . . . . . . . . . . . . . . . . . 300C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D, N, or NS package . . . . . . . . . . . . 260C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65C to 150C Stresses beyond those listed under "absolute maximum ratings" 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 "recommended operating conditions" 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. Maximum power dissipation is a function of TJ(max), JA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) - TA)/JA. Operating at the absolute maximum TJ of 150C can affect reliability. 3. The package thermal impedance is calculated in accordance with JESD 51-7. 4. Maximum power dissipation is a function of TJ(max), JC, and TC. The maximum allowable power dissipation at any allowable case temperature is PD = (TJ(max) - TC)/JC. Operating at the absolute maximum TJ of 150C can affect reliability. 5. The package thermal impedance is calculated in accordance with MIL-STD-883. 2 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 NE556, SA556, SE556 DUAL PRECISION TIMERS SLFS023F - APRIL 1978 - REVISED MARCH 2003 recommended operating conditions MIN VCC VI IO TA Supply voltage Input voltage (CONT, RESET, THRES, and TRIG) Output current NE556 Operating free-air temperature SA556 SE556 0 -40 -55 NE556, SA556 SE556 4.5 4.5 MAX 16 18 VCC 200 70 85 125 C UNIT V V mA POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 3 NE556, SA556, SE556 DUAL PRECISION TIMERS SLFS023F - APRIL 1978 - REVISED MARCH 2003 electrical characteristics, VCC = 5 V to 15 V, TA = 25C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN VT IT Threshold voltage level Threshold current (see Note 6) VCC = 15 V VTRIG Trigger voltage level VCC = 5 V ITRIG VRESET IRESET IDISCH Trigger current Reset voltage level Reset current Discharge switch off-state current VCC = 15 V VCC = 5 V VCC = 15 V, , IOL = 10 mA VCC = 15 V, , IOL = 50 mA Low-level output voltage VCC = 15 V, , IOL = 100 mA VCC = 15 V, VCC = 5 V, IOL = 3.5 mA VCC = 5 V, , IOL = 5 mA VCC = 5 V, VCC = 15 V, , IOH = -100 mA VOH High-level Hi h l l out ut output voltage VCC = 15 V, VCC = 5 V, , IOH = -100 mA Output low, , No load ICC Supply current Output high, g No load 9 TA = -55C to 125C 2.6 TA = -55C to 125C 0.1 TA = -55C to 125C 0.4 TA = -55C to 125C 2 TA = -55C to 125C IOL = 200 mA TA = -55C to 125C 0.1 TA = -55C to 125C IOL = 8 mA 12.75 TA = -55C to 125C IOH = -200 mA 2.75 TA = -55C to 125C VCC = 15 V VCC = 5 V VCC = 15 V 0.15 13.3 12.5 3.3 20 6 18 30 12 26 3 2 20 6 18 24 10 20 mA 0.25 0.3 13 12 12.5 3.3 V 0.1 0.15 13.3 2.5 2.5 2 2.5 0.35 0.15 0.8 0.25 0.75 0.4 0.25 3.3 4 TRIG at 0 V 0.3 TA = -55C to 125C RESET at VCC RESET at 0 V 4.5 TA = -55C to 125C 1.1 TA = -55C to 125C 0.5 0.7 0.1 -0.4 20 10 2 1 0.4 1.5 100 11 9.6 9.6 2.9 2.9 0.1 3.3 0.3 0.5 0.7 0.1 -0.4 20 10 1.67 2.2 VCC = 15 V VCC = 5 V 8.8 2.4 NE556 SA556 TYP 10 3.3 30 5 MAX 11.2 4.2 250 5.6 4.8 3 1.45 1.67 MIN 9.4 2.7 SE556 TYP 10 3.3 30 5 MAX 10.6 4 250 5.2 6 1.9 1.9 0.9 1 1.1 0.4 -1 100 10.4 10.4 3.8 3.8 0.15 0.2 0.5 1 2.2 2.7 V V A V mA nA V V nA UNIT VCONT Control voltage g (open circuit) VOL VCC = 5 V 4 10 4 8 NOTE 6: This parameter influences the maximum value of the timing resistors RA and RB in the circuit of Figure 1. For example, when VCC = 5 V, the maximum value is R = RA + RB 3.4 M, and for VCC = 15 V, the maximum value is 10 M. 4 POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 NE556, SA556, SE556 DUAL PRECISION TIMERS SLFS023F - APRIL 1978 - REVISED MARCH 2003 operating characteristics, VCC = 5 V and 15 V PARAMETER Each timer, monostable Each timer, astable Timer 1-Timer 2 Tem erature Temperature coefficient of timing interval Su ly Supply voltage sensitivity f i i interval l of timing i Each timer, monostable Each timer, astable Timer 1-Timer 2 Each timer, monostable Each timer, astable Timer 1-Timer 2 CL = 15 pF, CL = 15 pF, TA = 25C TA = 25C TA = 25C TA = MIN to MAX TEST CONDITIONS MIN Initial I iti l error of timing interval TA = 25C NE556 SA556 TYP 1 2.25% 1 50 150 10 0.1 0.3 0.2 100 100 300 300 0.5 MAX 3 MIN SE556 TYP 0.5 1.5% 0.5 30 90 10 0.05 0.15 0.1 100 100 200* 200* ns ns 0.2* %/V 100* ppm/C MAX 1.5* UNIT Output-pulse rise time Output-pulse fall time * On products compliant to MIL-PRF-38535, this parameter is not production tested. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. Timing-interval error is defined as the difference between the measured value and the average value of a random sample from each process run. Values specified are for a device in a monostable circuit similar to Figure 2, with the following component values: RA = 2 k to 100 k, C = 0.1 F. Values specified are for a device in an astable circuit similar to Figure 1, with the following component values: RA = 1 k to 100 k, C = 0.1 F. APPLICATION INFORMATION VCC (5 V to 15 V) Open (see Note A) RA CONT RESET DISCH OUT RB THRES TRIG C Input NOTE A: Bypassing the control-voltage input to ground with a capacitor might improve operation. This should be evaluated for individual applications. C GND THRES TRIG GND OUT VCC RL RA 0.01 F VCC (5 V to 15 V) CONT RESET DISCH VCC RL OUT OUT Figure 1. Circuit for Astable Operation Figure 2. Circuit for Monostable Operation POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 5 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI's terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI. Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation. Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright 2003, Texas Instruments Incorporated |
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