XL556

XL556 SOP-14 XD556 DIP-14 D D D D D D D Very Low Power Consumption . . . 2 mW Typ at VDD = 5 V Capable of Operation in Astable Mode CMOS Output Capable of Swinging Rail to Rail High Output-Current Capability Sink 100 mA Typ Source 10 mA Typ Output Fully Compatible With CMOS, TTL, and MOS Low Supply Current Reduces Spikes During Output Transitions Single-Supply Operation From 2 V to 15 V 1 DISCH 1 THRES 1 CONT 1 RESET 1 OUT 1 TRIG GND 1 14 2 13 3 12 4 11 5 10 6 9 7 8 VDD 2 DISCH 2 THRES 2 CONT 2 RESET 2 OUT 2 TRIG description The XDXL/556 series are monolithic timing circuitsfabricated using the TI LinCMOS process, whichprovides full compatibility with CMOS, TTL, andMOS logic and operates at frequencies up to 2 MHz. Accurate time delays and oscillations arepossible with smaller, Power consumption is low across the full range of power supply voltages. the XDXL/556 has a trigger levelapproximately 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 isreset and the output is low. The reset input can override all other inputs and can be used to initiate a new timingcycle. 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 XDXL/556 exhibits greatlyreduced supply-current spikes during output transitions. 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 XDXL/556 is characterized for operation from 0°C to 70°C. 1 XL556 SOP-14 XD556 DIP-14 AVAILABLE OPTIONS TA RANGE VDD RANGE O°C to 70°C 2V to 18 V PACKAGE SMALL OUTLINE (D) CHIP CARRIER (FK) CERAMIC DIP (J) PLASTIC DIP (N) XL556 XD556 FUNCTION TABLE RESET VOLTAGE† TRIGGER VOLTAGE† THRESHOLD VOLTAGE† OUTPUT DISCHARGE SWITCH On < MIN Irrelevant Irrelevant L > MAX < MIN Irrelevant H Off >MAX >MAX >MAX L On > MAX > MAX < MIN As previously established † For conditions shown as MIN or MAX, use the appropriate value specified under electrical characteristics. functional block diagram (each timer) VDD 14 CONT 3 RESET 4 R THRES R1 2 R 1 5 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 XL556 SOP-14 XD556 DIP-14 FUNCTIONAL BLOCK DIAGRAM (EACH TIMER) VDD (14) CONT (3) RESET (4) R THRESH R1 (2) R 1 (5) OUT S R (6) TRIG R (1) DISCH (7) GND 3 XL556 SOP-14 XD556 DIP-14 absolute maximum ratings over operating free-air temperature (unless otherwise noted) XDXL/556 Supply voltage, VDD (see Note 1) 18 Input voltage range, VI – 0.3 to VDD Sink current, discharge or output 150 Source current, output 15 Continuous total power dissipation See Dissipation Rating Table Operating free-air temperature range 0 to 70 Storage temperature range – 65 to 150 Case temperature for 60 seconds Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds FK package J package Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds D or N package 260 NOTE 1: All voltage values are with respect to network ground terminal. DISSIPATION RATING TABLE PACKAGE D FK J N TA ≤ 25°C POWER RATING 950 mW 1375 mW 1375 mW 1150 mW DERATING FACTOR ABOVE TA = 25°C TA = 70°C POWER RATING TA = 85°C POWER RATING TA = 125°C POWER RATING 7.6 mW/°C 11.0 mW/°C 11.0 mW/°C 9.2 mW/°C 608 mW 880 mW 880 mW 736 mW 494 mW 715 mW 715 mW 598 mW N/A 275 mW 275 mW N/A recommended operating conditions MIN MAX Supply voltage, VDD 2 15 V Operating free-air temperature range, TA 0 70 °C XDXL/556 4 UNIT XL556 SOP-14 XD556 DIP-14 electrical characteristics at specified free-air temperature, VDD = 2 V for TLC556C, VDD = 3 V for XDXL/556 TEST CONDITIONS PARAMETER VIT Input threshold voltage I(trigger) (t i ) I(reset) ( t) Reset current 1.33 1.65 Full range 0.85 IOL = 1 mA Discharge g switch off-state current VOH High level output voltage High-level IOH = –300 300 µA VOL Low level output voltage Low-level IOL = 1 mA IDD Supply current See Note 2 1.75 10 75 25°C 0.4 Full range 0.3 0.67 1.05 75 25°C 0.4 Full range 0.3 1.1 10 MAX 75 MAX 66.7% 25°C 0.04 Full range 0.2 0.25 25°C 0.1 MAX 0.5 25°C 1.5 Full range 1.5 1.9 0.07 Full range 25°C 1.5 1.8 25°C 25°C 0.95 10 MAX Control voltage (open circuit) as a percentage of supply voltage Discharge g switch on-state voltage MAX 0.95 25°C Trigger current Reset voltage TYP 25°C MAX Trigger voltage V(reset) ( t) MIN 25°C Threshold current V(trigger) (t i ) XDXL/556 TA† 0.3 0.35 130 500 Full range 800 † Full range is 0°C to 70°C for XDXL/556 NOTE 2: These values apply for the expected operating configurations in which THRES is connected directly to DISCH or TRIG. 5 XL556 SOP-14 XD556 DIP-14 electrical characteristics at specified free-air temperature, VDD = 5 V PARAMETER VIT TEST CONDITIONS Input threshold voltage Threshold current V(trigger) ( ) Trigger voltage I(trigger) ( i ) Trigger current V(reset) ( ) Reset voltage I(reset) ( ) Reset current Control voltage (open circuit) as a percentage of supply voltage Discharge g switch on-state voltage IOL O = 10 mA High-level g output voltage IOH 1 mA O = –1 Low-level output voltage Supply current MAX 25°C 2.8 3.3 3.8 Full range 2.7 3.9 25°C 10 MAX 75 25°C 1.36 Full range 1.26 1.66 25°C 10 MAX 75 25°C 0.4 Full range 0.3 1.1 10 MAX 75 MAX 66.7% 25°C 0.15 0.1 MAX 0.5 25°C 4.1 Full range 4.1 25°C IOL O = 5 mA 25°C Full range V pA 0.5 V nA V 0.21 0.4 0.5 0.13 0.3 0.4 0.08 Full range See Note 2 1.5 4.8 Full range 25°C V pA 0.6 25°C V 1.96 1.8 25°C UNIT pA 2.06 Full range IOL 3 2 mA O = 3.2 IDD TYP 25°C IOL O = 8 mA VOL O MIN Full range Discharge g switch off-state current VOH O XDXL/556 TA† V 0.3 0.35 340 700 1000 µA † Full range is 0°C to 70°C for XDXL/556 NOTE 2: These values apply for the expected operating configurations in which THRES is connected directly to DISCH or to TRIG. 6 TLC556, TLC556Y SOP-14 DUALXL556 LinCMOS TIMERS XD556 DIP-14 SLFS047B – FEBRUARY 1984 – REVISED SEPTEMBER 1997 electrical characteristics at specified free-air temperature, VDD = 15 V PARAMETER VIT TEST CONDITIONS Input threshold voltage Threshold current V(trigger) (t i ) Trigger voltage I(trigger) (t i ) Trigger current V(reset) ( t) Reset voltage I(reset) ( t) Reset current Control voltage (open circuit) as a percentage of supply voltage Discharge g switch onstate voltage IOL = 100 mA Discharge g switch offstate current IOH = –10 10 mA VOH High-level g output voltage IOH = –5 5 mA IOH = –1 1 mA IOL = 100 mA VOL Low-level output voltage Supply current XDXL/556 MIN TYP MAX 25°C 9.45 10 10.55 Full range 9.35 10 MAX 75 25°C 4.65 Full range 4.55 5 10 MAX 75 25°C 0.4 0.3 1.1 10 MAX 75 MAX 66.7% 25°C 0.8 Full range 0.1 MAX 0.5 25°C 12.5 Full range 12.5 25°C 13.5 Full range 13.5 25°C 14.2 Full range 14.2 1.5 V pA 1.7 V nA V 14.9 1.28 3.2 3.6 0.63 1 V 1.3 0.12 Full range 25°C pA 14.6 Full range Full range V 14.2 Full range See Note 2 5.35 1.8 25°C 25°C pA 1.8 25°C 25°C V 5.45 25°C Full range UNIT 10.65 25°C 25°C IOL = 50 mA IOL = 10 mA IDD TA† 0.3 0.4 0.72 1.2 mA 1.6 † Full range is 0°C to 70°C for XDXL/556. NOTE 2: These values apply for the expected operating configurations in which THRES is connected directly to DISCH or TRIG. 7 XL556 SOP-14 XD556 DIP-14 electrical characteristics, VDD = 5 V, TA = 25°C PARAMETER VIT TEST CONDITIONS Input threshold voltage MIN TYP MAX 2.8 3.3 3.8 1.36 1.66 0.4 1.1 Threshold current V(trigger) Trigger voltage I(trigger) Trigger current V(reset) I(reset) Reset voltage 10 IOL = 10 mA 0.15 Discharge switch off-state current VOH VOL IOH = – 1 mA IOL = 8 mA Low-level output voltage 4.1 IOL = 5 mA IOL = 2.1 mA V pA 0.5 0.1 High-level output voltage V pA 1.5 10 Discharge switch on-state voltage V pA 1.96 10 Reset current UNIT V nA 4.8 V 0.21 0.4 0.13 0.3 0.08 0.3 IDD Supply current See Note 2 3.40 700 NOTE 2: These values apply for the expected operating configurations in which THRES is connected directly to DISCH or TRIG. V µA operating characteristics, VDD = 5 V, TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS Initial error of timing interval † VDD = 5 V to 15 V, Supply voltage sensitivity of timing interval CT = 0.1 µF, tr tf Output pulse rise time fmax Maximum frequency in astable mode Output pulse fall time TYP MAX RA = RB = 1 kΩ to 100 kΩ 1% 3% See Note 3 0.1 0.5 20 75 15 60 RL = 10 MΩ, MΩ CL = 10 pF RA = 470 Ω, CT = 200 pF, RB = 200 Ω, See Note 3 MIN 1.2 2.1 UNIT %/V ns MHz † Timing interval error is defined as the difference between the measured value and the average value of a random sample from each process run. NOTE 3: RA, RB, and CT are as defined in Figure 3. 8 XL556 SOP-14 XD556 DIP-14 TYPICAL CHARACTERISTICS PROPAGATION DELAY TIMES (TO DISCHARGE OUTPUT FROM TRIGGER AND THRESHOLD SHORTED TOGETHER) vs SUPPLY VOLTAGE DISCHARGE SWITCH ON-STATE RESISTANCE vs FREE-AIR TEMPERATURE 600 Discharge Switch On-State Resistance – Ω 70 t PHL , t PLH – Propagation Delay Times – ns 100 VDD = 2 V, IO = 1 mA 40 VDD = 5 V, IO = 10 mA 20 VDD = 15 V, IO = 100 mA 10 7 4 2 1 –75 IO(on) ≥ 1 mA CL ≈ 0 TA = 25°C 500 400 300 tPHL 200 tPLH‡ 100 0 –50 –25 0 25 50 75 100 125 0 TA – Free-Air Temperature – °C 2 4 6 8 10 12 14 16 18 20 VDD – Supply Voltage – V ‡ The effects of the load resistance on these values must be taken into account separately. Figure 1 Figure 2 9 XL556 SOP-14 XD556 DIP-14 APPLICATION INFORMATION 0.1 µF RA tL tH VDD 0.1 µF tPHL CONT VDD RESET XDXL/556 DISCH RL 2/3 VDD Output OUT RB THRES CL 1/3 VDD TRIG GND GND CT tPLH CIRCUIT TRIGGER AND THRESHOLD VOLTAGE WAVEFORM Figure 3. Astable Operation Connecting the trigger input to the threshold input, as shown in Figure 3, causes the timer to run as a multivibrator. The capacitor CT charges through RA and RB to the threshold voltage level (approximately 0.67 VDD) and then discharges through RB only to the value of the trigger voltage level (approximately 0.33 VDD). The output is high during the charging cycle (tH) and low during the discharge cycle (tL). The duty cycle is controlled by the values of RA, and RB, and CT, as shown in the equations below. [ CT (RA ) RB) In 2 (In 2 + 0.693) t L [ C T R B In 2 Period + t H ) t L [ C T (R A ) 2R B) In 2 tL RB Output driver duty cycle + [ 1 * tH ) tL R A ) 2R B tH Output waveform duty cycle + tH t)H tL [ R )RB2R B A The 0.1-µF capacitor at CONT in Figure 3 decreases the period by about 10%. The formulas shown above do not allow for any propagation delay from the trigger and threshold inputs to the discharge output. These delay times add directly to the period and create differences between calculated and actual values that increase with frequency. In addition, the discharge output resistance ron adds to RB to provide another source of error in the calculation when RB is very low or ron is very high. ƪ ǒ ƪ ǒ Ǔƫ Ǔƫ The equations below provide better agreement with measured values. tH + CT (RA ) RB) In tL + CT (RB ) ron) In 3 * exp * tPLH C T (R B ) r on) 3 * exp * tPHL C T (R A ) RB) 10 ) tPHL ) tPLH XL556 SOP-14 XD556 DIP-14 APPLICATION INFORMATION The preceding equations and those given earlier are similar in that a time constant is multiplied by the logarithm of a number or function. The limit values of the logarithmic terms must be between In 2 at low frequencies and In 3 at extremely high frequencies. For a duty cycle close to 50%, an appropriate constant for the logarithmic t t H terms can be substituted with good results. Duty cycles less than 50% will require that H < 1 and t t t H L L possibly RA ≤ ron. These conditions can be difficult to obtain. ) In monostable applications, the trip point of the trigger input can be set by a voltage applied to CONT. An input voltage between 10% and 80% of the supply voltage from a resistor divider with at least 500-µA bias provides good results. 11 XL556 SOP-14 XD556 DIP-14 SCALE 0.900 12 XL556 SOP-14 XD556 DIP-14 13