MAX4621

Low On-Resistance: 3½ (typ), 5½ (max)
Guaranteed RON Match Between Channels (0.5½ max)
Guaranteed Break-Before-Make Operation (MAX4622)
Guaranteed Off-Channel Leakage <5nA at +85°C
Single-Supply Operation (+4.5V to +36V) Bipolar-Supply Operation (±4.5V to ±18V)
TTL/CMOS-Logic Compatible
Rail-to-Rail® Analog Signal Handling Capability
Pin Compatible with DG401/DG403/DG405

Reed Relay Replacement                                      Military Radios
Test Equipment                                            PBX, PABX Systems
Communication Systems                            Audio-Signal Routing
Data-Acquisition Systems                                               Avionics

(Voltages Referenced to GND)
V+ to GND .......................................................................-0.3V to +44V
V- to GND ........................................................................+0.3V to -44V
V+ to V-...........................................................................-0.3V to +44V
VL to GND..............................................................-0.3V to (V+ + 0.3V)
All Other Pins to GND (Note 1) ..................... (V- - 0.3V) to (V+ + 0.3V)
Continuous Current (COM_, NO_, NC_) .................................±100mA
Peak Current (COM_, NO_, NC_)
(pulsed at 1ms, 10% duty cycle) ........................................... ±300mA
Continuous Power Dissipation (TA = +70°C)
Narrow SO (derate 8.70mW/°C above +70°C) ......................696mW
Narrow DIP (derate 10.53mW/°C above +70°C) ...................842mW
Operating Temperature Ranges
MAX462_C_ _ ...............................................................0°C to +70°C
MAX462_E_ _.............................................................-40°C to +85°C
Storage Temperature Range ...................................-65°C to +150°C
Lead Temperature (soldering, 10sec) .....................................+300°C

Note 1: Signals on NO_, NC_, or COM_ exceeding V+ or V- are clamped by internal diodes. Limit forward-diode current to maximum current rating.

The MAX4621/MAX4622/MAX4623 are precision, dual, high-speed analog switches. The single-pole/singlethrow (SPST) MAX4621 and double-pole/single-throw (DPST) MAX4623 dual switches are normally open (NO). The single-pole/double-throw (SPDT) MAX4622 has two normally closed (NC) and two NO poles. All three parts offer low 5½ on-resistance guaranteed to match to within 0.5½ between channels and to remain flat over the full analog signal range (Æ0.5½ max). They also offer low leakage (<500pA at +25°C, <5nA at +85°C) and fast switching times (turn-on time <250ns, turn-off time <200ns).

The MAX4621 is ideal in low-distortion applications and are the preferred solution over mechanical relays in automatic test equipment or applications where current switching is required. They have low power requirements, use less board space, and are more reliable than mechanical relays.

The MAX4621/MAX4622/MAX4623 are pin-compatible replacements for the DG401/DG403/DG405, respectively, offering improved overall performance. These monolithic switches operate from a single positive supply (+4.5V to +36V) or with bipolar supplies (±4.5V to ±18V) while retaining CMOS-logic input compatibility.