tion, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation. The TL494C device is characterized for operation from 0C to 70C. The TL494I device is characterized for operation from -40C to 85C. Device Information(1) PART NUMBER TL494 PACKAGE (PIN) BODY SIZE SOIC (16) 9.90 mm x 3.91 mm PDIP (16) 19.30 mm x 6.35 mm SOP (16) 10.30 mm x 5.30 mm TSSOP (16) 5.00 mm x 4.40 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. 4 Simplified Block Diagram 3 Description 1 TL494 + The TL494 device incorporates all the functions required in the construction of a pulse-widthmodulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the power-supply control circuitry to a specific application. 16 + 2 15 3 14 VREF 4 13 12 5 6 Osc 11 Control 10 7 8 9 1 An IMPORTANT NOTICE

TL494I, TL494M, TL494Y PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS074A - JANUARY 1983 - REVISED AUGUST 1995 * * * * * Complete PWM Power Control Circuitry TL494C, TL494I . . . D, N, OR PW PACKAGE TL494M . . . J PACKAGE (TOP VIEW) Uncommitted Outputs for 200-mA Sink or Source Current Output Control Selects Single-Ended or Push-Pull Operation 1IN + 1 16 2IN + 1IN - 2 15 2IN - FEEDBACK 3 14 REF DTC 4 13 OUTPUT CTRL CT 5 12 RT 6 11 VCC C2 GND 7 10 E2 C1 8 9 E1 Internal Circuitry Prohibits Double Pulse at Either Output Variable Dead Time Provides Control Over Total Range Internal Regulator Provides a Stable 5-V Reference Supply With 5% Tolerance TL494M . . . FK PACKAGE Circuit Architecture Allows Easy Synchronization (TOP VIEW) 1IN- 1IN+ NC 2IN+ 2IN- * * description FEEDBACK DTC NC CT RT The TL494 contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5-V, 5%-precision regulator, and output-control circ

t operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation. The TL494C is characterized for operation from 0C to 70C. The TL494I is characterized for operation from -40C to 85C. AVAILABLE OPTIONS PACKAGED DEVICES (1) (1) TA SMALL OUTLINE (D) PLASTIC DIP (N) SMALL OUTLINE (NS) SHRINK SMALL OUTLINE (DB) THIN SHRINK SMALL OUTLINE (PW) 0C to 70C TL494CD TL494CN TL494CNS TL494CDB TL494CPW -40C to 85C TL494ID TL494IN -- -- -- The D, DB, NS, and PW packages are available taped and reeled. Add the suffix R to device type (e.g., TL494CDR). 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. PRODUCTION DATA information is current as of publication date. Products conform to specif

TL494I, TL494M, TL494Y PULSE-WIDTH-MODULATION CONTROL CIRCUITS SLVS074A - JANUARY 1983 - REVISED AUGUST 1995 * * * * * Complete PWM Power Control Circuitry TL494C, TL494I . . . D, N, OR PW PACKAGE TL494M . . . J PACKAGE (TOP VIEW) Uncommitted Outputs for 200-mA Sink or Source Current Output Control Selects Single-Ended or Push-Pull Operation 1IN + 1 16 2IN + 1IN - 2 15 2IN - FEEDBACK 3 14 REF DTC 4 13 OUTPUT CTRL CT 5 12 RT 6 11 VCC C2 GND 7 10 E2 C1 8 9 E1 Internal Circuitry Prohibits Double Pulse at Either Output Variable Dead Time Provides Control Over Total Range Internal Regulator Provides a Stable 5-V Reference Supply With 5% Tolerance TL494M . . . FK PACKAGE Circuit Architecture Allows Easy Synchronization (TOP VIEW) 1IN- 1IN+ NC 2IN+ 2IN- * * description FEEDBACK DTC NC CT RT The TL494 contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5-V, 5%-precision regulator, and output-control circ

t operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation. The TL494C is characterized for operation from 0C to 70C. The TL494I is characterized for operation from -40C to 85C. AVAILABLE OPTIONS PACKAGED DEVICES (1) (1) TA SMALL OUTLINE (D) PLASTIC DIP (N) SMALL OUTLINE (NS) SHRINK SMALL OUTLINE (DB) THIN SHRINK SMALL OUTLINE (PW) 0C to 70C TL494CD TL494CN TL494CNS TL494CDB TL494CPW -40C to 85C TL494ID TL494IN -- -- -- The D, DB, NS, and PW packages are available taped and reeled. Add the suffix R to device type (e.g., TL494CDR). 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. PRODUCTION DATA information is current as of publication date. Products conform to specif

t operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation. The TL494C is characterized for operation from 0C to 70C. The TL494I is characterized for operation from -40C to 85C. AVAILABLE OPTIONS PACKAGED DEVICES (1) (1) TA SMALL OUTLINE (D) PLASTIC DIP (N) SMALL OUTLINE (NS) SHRINK SMALL OUTLINE (DB) THIN SHRINK SMALL OUTLINE (PW) 0C to 70C TL494CD TL494CN TL494CNS TL494CDB TL494CPW -40C to 85C TL494ID TL494IN -- -- -- The D, DB, NS, and PW packages are available taped and reeled. Add the suffix R to device type (e.g., TL494CDR). 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. PRODUCTION DATA information is current as of publication date. Products conform to specif

t operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation. The TL494C is characterized for operation from 0C to 70C. The TL494I is characterized for operation from -40C to 85C. AVAILABLE OPTIONS PACKAGED DEVICES (1) (1) TA SMALL OUTLINE (D) PLASTIC DIP (N) SMALL OUTLINE (NS) SHRINK SMALL OUTLINE (DB) THIN SHRINK SMALL OUTLINE (PW) 0C to 70C TL494CD TL494CN TL494CNS TL494CDB TL494CPW -40C to 85C TL494ID TL494IN -- -- -- The D, DB, NS, and PW packages are available taped and reeled. Add the suffix R to device type (e.g., TL494CDR). 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. PRODUCTION DATA information is current as of publication date. Products conform to specif

t operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation. The TL494C is characterized for operation from 0C to 70C. The TL494I is characterized for operation from -40C to 85C. AVAILABLE OPTIONS PACKAGED DEVICES (1) (1) TA SMALL OUTLINE (D) PLASTIC DIP (N) SMALL OUTLINE (NS) SHRINK SMALL OUTLINE (DB) THIN SHRINK SMALL OUTLINE (PW) 0C to 70C TL494CD TL494CN TL494CNS TL494CDB TL494CPW -40C to 85C TL494ID TL494IN -- -- -- The D, DB, NS, and PW packages are available taped and reeled. Add the suffix R to device type (e.g., TL494CDR). 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. PRODUCTION DATA information is current as of publication date. Products conform to specif

t operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation. The TL494C is characterized for operation from 0C to 70C. The TL494I is characterized for operation from -40C to 85C. AVAILABLE OPTIONS PACKAGED DEVICES (1) (1) TA SMALL OUTLINE (D) PLASTIC DIP (N) SMALL OUTLINE (NS) SHRINK SMALL OUTLINE (DB) THIN SHRINK SMALL OUTLINE (PW) 0C to 70C TL494CD TL494CN TL494CNS TL494CDB TL494CPW -40C to 85C TL494ID TL494IN -- -- -- The D, DB, NS, and PW packages are available taped and reeled. Add the suffix R to device type (e.g., TL494CDR). 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. PRODUCTION DATA information is current as of publication date. Products conform to specif

t operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation. The TL494C is characterized for operation from 0C to 70C. The TL494I is characterized for operation from -40C to 85C. AVAILABLE OPTIONS PACKAGED DEVICES (1) (1) TA SMALL OUTLINE (D) PLASTIC DIP (N) SMALL OUTLINE (NS) SHRINK SMALL OUTLINE (DB) THIN SHRINK SMALL OUTLINE (PW) 0C to 70C TL494CD TL494CN TL494CNS TL494CDB TL494CPW -40C to 85C TL494ID TL494IN -- -- -- The D, DB, NS, and PW packages are available taped and reeled. Add the suffix R to device type (e.g., TL494CDR). 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. PRODUCTION DATA information is current as of publication date. Products conform to specif

t operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation. The TL494C is characterized for operation from 0C to 70C. The TL494I is characterized for operation from -40C to 85C. AVAILABLE OPTIONS PACKAGED DEVICES (1) (1) TA SMALL OUTLINE (D) PLASTIC DIP (N) SMALL OUTLINE (NS) SHRINK SMALL OUTLINE (DB) THIN SHRINK SMALL OUTLINE (PW) 0C to 70C TL494CD TL494CN TL494CNS TL494CDB TL494CPW -40C to 85C TL494ID TL494IN -- -- -- The D, DB, NS, and PW packages are available taped and reeled. Add the suffix R to device type (e.g., TL494CDR). 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. PRODUCTION DATA information is current as of publication date. Products conform to specif

t operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation. The TL494C is characterized for operation from 0C to 70C. The TL494I is characterized for operation from -40C to 85C. AVAILABLE OPTIONS PACKAGED DEVICES (1) (1) TA SMALL OUTLINE (D) PLASTIC DIP (N) SMALL OUTLINE (NS) SHRINK SMALL OUTLINE (DB) THIN SHRINK SMALL OUTLINE (PW) 0C to 70C TL494CD TL494CN TL494CNS TL494CDB TL494CPW -40C to 85C TL494ID TL494IN -- -- -- The D, DB, NS, and PW packages are available taped and reeled. Add the suffix R to device type (e.g., TL494CDR). 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. PRODUCTION DATA information is current as of publication date. Products conform to specif

t operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation. The TL494C is characterized for operation from 0C to 70C. The TL494I is characterized for operation from -40C to 85C. AVAILABLE OPTIONS PACKAGED DEVICES (1) (1) TA SMALL OUTLINE (D) PLASTIC DIP (N) SMALL OUTLINE (NS) SHRINK SMALL OUTLINE (DB) THIN SHRINK SMALL OUTLINE (PW) 0C to 70C TL494CD TL494CN TL494CNS TL494CDB TL494CPW -40C to 85C TL494ID TL494IN -- -- -- The D, DB, NS, and PW packages are available taped and reeled. Add the suffix R to device type (e.g., TL494CDR). 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. PRODUCTION DATA information is current as of publication date. Products conform to specif

t operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation. The TL494C is characterized for operation from 0C to 70C. The TL494I is characterized for operation from -40C to 85C. AVAILABLE OPTIONS PACKAGED DEVICES (1) (1) TA SMALL OUTLINE (D) PLASTIC DIP (N) SMALL OUTLINE (NS) SHRINK SMALL OUTLINE (DB) THIN SHRINK SMALL OUTLINE (PW) 0C to 70C TL494CD TL494CN TL494CNS TL494CDB TL494CPW -40C to 85C TL494ID TL494IN -- -- -- The D, DB, NS, and PW packages are available taped and reeled. Add the suffix R to device type (e.g., TL494CDR). 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. PRODUCTION DATA information is current as of publication date. Products conform to specif

t operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation. The TL494C is characterized for operation from 0C to 70C. The TL494I is characterized for operation from -40C to 85C. AVAILABLE OPTIONS PACKAGED DEVICES (1) (1) TA SMALL OUTLINE (D) PLASTIC DIP (N) SMALL OUTLINE (NS) SHRINK SMALL OUTLINE (DB) THIN SHRINK SMALL OUTLINE (PW) 0C to 70C TL494CD TL494CN TL494CNS TL494CDB TL494CPW -40C to 85C TL494ID TL494IN -- -- -- The D, DB, NS, and PW packages are available taped and reeled. Add the suffix R to device type (e.g., TL494CDR). 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. PRODUCTION DATA information is current as of publication date. Products conform to specif