DG421/DG423/DG425 19-0137 Rev 1 3/94 Improved Low-Power, CMOS Analog Switches with Latches General Description New Features Maxims redesigned DG421/DG423/DG425 monolithic Plug-In Upgrades for Industry-Standard DG421/DG423/DG425 analog switches now feature guaranteed on-resistance matching (3 max) between switches and on-resistance Improved r(DS)ON Match Between Channels (3 max) flatness over the signal range (4 max). These low on- Guaranteed r Over Signal Range (4 max) FLAT(ON) resistance switches (20 typ) conduct equally well in both Improved Charge Injection (15pC max) directions. They guarantee a low charge injection of 15pC maximum and an ESD tolerance of 2000V minimum per Improved Off Leakage Current Over Temperature Method 3015.7. Off leakage current over temperature has (<5nA at +85C) also been reduced (less than 5nA at +85C). Withstands Electrostatic Discharge (2000V min) per Method 3015.7 The DG421/DG423/DG425 are precision, dual CMOS switches with latchable logic inputs that simplify inter- Existing Features facing with microprocessors (Ps). The single-pole/single- Low r (35 max) DS(ON) throw DG421 and double-pole/single-throw DG425 are normally open dual switches. The dual, single- Single-Supply Operation +10V to +30V pole/double-throw DG423 has two normally open and Bipolar-Supply Operation 4.5V to 20V two normally closed switches. Fast switching times Low Power Consumption (35W max) (175ns for t and 145ns for t ) and low power ON OFF Rail-to-Rail Signal Handling Capability consumption (35W max) make these parts ideal for TTL/CMOS-Logic Compatible battery-powered applications requiring P-compatible switches. Operation is from a single +10V to +30V supply, Ordering Information or bipolar 4.5V to 20V supplies. Fabricated with the same 44V silicon-gate process, these switches have PART TEMP. RANGE PIN-PACKAGE rail-to-rail signal handling capabilities. DG421CJ 0C to +70C 16 Plastic DIP DG421CY 0C to +70C 16 SO Applications DG421C/D 0C to +70C Dice* Sample-and-Hold Circuits Modems DG421DJ -40C to +85C 16 Plastic DIP Fax Machines Test Equipment Battery-Operated Systems PBX, PABX DG421DY -40C to +85C 16 SO Guidance and Control Systems Military Radios DG421DK -40C to +85C 16 CERDIP Audio Signal Routing Communication Systems DG421AK -55C to +125C 16 CERDIP** Ordering Information continued at end of data sheet. * Contact factory for dice specifications. **Contact factory for availability and processing to MIL-STD-883B. Functional Diagrams/Truth Tables Pin Configurations TOP VIEW D1 S1 S1 1 16 D1 WR 2 IN1 15 WR DG421 TRUTH TABLE N.C. 3 V- 14 IN1 CK DQ N.C. WR RS IN SWITCH DG421 GND 4 13 R 0 Off N.C. V DG421 5 12 L CK IN2 01 1 On DQ N.C. 6 11 V+ R RS LOGIC 0.8V RS 7 10 IN2 LOGIC1 2.4V D2 S2 D2 8 9 S2 SWITCHES SHOWN FOR LOGIC1 INPUT TWO SPST SWITCHES DIP PER PACKAGE N.C. = No Internal Connection Pin Configurations continued at end of data sheet. Functional Diagrams/Truth Tables continued at end of data sheet. Maxim Integrated Products 1 Call toll free 1-800-998-8800 for free samples or literature.Improved Low-Power, CMOS Analog Switches with Latches ABSOLUTE MAXIMUM RATINGS Voltage Referenced to V- Continuous Power Dissipation (T = +70C) A V+............................................................44V 16-Pin Plastic DIP (derate 10.53mW/C above +70C) .842mW GND .........................................................25V 20-Pin PLCC (derate 10.00mW/C above +70C) ..... 800mW V .................................. (GND - 0.3V) to (V+ + 0.3V) 16-Pin CERDIP (derate 10.00mW/C above +70C) ...800mW L Digital Inputs, V , V (Note 1)..............(V- - 2V) to (V+ + 2V) Operating Temperature Ranges S D Current (any terminal, except S or D) .................................30mA DG42 C .......................................... 0C to +70C Continuous Current, S or D.................................................20mA DG42 D ....................................... -40C to +85C Peak Current, S or D (pulsed at 1ms, 10% duty cycle max)...100mA DG42 A .................................... -55C to +125C Storage Temperature Ranges DG42 C /DG42 D ........................... -65C to +125C DG42 A ..................................... -65C to +150C Lead Temperature (soldering, 10sec)....................+300C Note 1: Signals on S, D, or IN exceeding V+ or V- are clamped by internal diodes. Limit forward current to maximum current ratings. Stresses beyond those listed underAbsolute Maximum Rating 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 in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V+ = 15V, V- = -15V, V = +5V, GND = 0V, V = +2.4V, V = +0.8V, T = T to T , unless otherwise noted.) L INH INL A MIN MAX DG42 C, DG42 D DG42 A PARAMETER SYMBOL CONDITIONS MIN TYP MAX MIN TYP MAX UNITS (Note 2) (Note 2) SWITCH Analog Signal Range V (Note 3) -15 15 -15 15 V ANALOG V+ = 13.5V, T = +25C 20 45 20 35 A Drain-Source V- = -13.5V, r DS(ON) On-Resistance I = -10mA, S T = T 45 45 A MIN to TMAX V = 10V D V+ = 16.5V, T = +25C 3 3 A On-Resistance Match V- = -16.5V, D r Between Channels DS(ON) I = -10mA, S (Note 4) T = T 4 4 A MIN to TMAX V = 10V D V+ = 15V, T = +25C 4 4 A On-Resistance V- = -15V, r FLAT(ON) Flatness (Note 4) I = -10mA, S T = T 5 5 A MIN to TMAX V = 5V D V+ = 16.5V, T = +25C -0.50 -0.01 0.50 -0.25 -0.01 0.25 Source-Off A V- = -16.5V, Leakage Current I nA S(OFF) V = 15.5V, D (Note 5) T = T -5 5 -10 10 A MIN to TMAX V = m15.5V S V+ = 16.5V, T = +25C -0.50 -0.01 0.50 -0.25 -0.01 0.25 A Drain-Off V- = -16.5V, Leakage Current I nA D(OFF) V = 15.5V, D (Note 5) T = T -5 5 -10 10 A MIN to TMAX V = m15.5V S V+ = 16.5V, T = +25C -1.0 -0.04 1.0 -0.40 -0.04 0.40 A Drain-On V- = -16.5V, Leakage Current I nA D(ON) V = 15.5V, D (Note 5) T = T -10 10 -20 20 A MIN to TMAX V = 15.5V S 2 DG421/DG423/DG425