The AD790 is a fast (45 ns), precise voltage comparator, with a number of features that make it exceptionally versatile and easy to use. The AD790 may operate from either a single +5 V supply or a dual ±15 V supply. In the single-supply mode, the AD790's inputs maybe referred to ground, a feature not found in other comparators. In the dual-supply mode it has the unique ability of handling a maximum differential voltage of 15 V across its input terminals, easing their interfacing to large amplitude and dynamic signals.

The device is fabricated using Analog Devices' Complementary Bipolar (CB) process - which gives the AD790's combination of fast response time and outstanding input voltage resolution (1mV max). To preserve its speed and accuracy, the AD790 incorporates a "low glitch" output stage that does not exhibit the large current spikes normally found in TTL or CMOS output stages. Its controlled switching reduces power supply disturbances that can feed back to the input and cause undesired oscillations. The AD790 also has a latching function which makes it suitable for applications requiring synchronous operation.

The AD790 is available in five performance grades. The AD790J and the AD790K are rated over the commercial temperature range of 0°C to 70°C. The AD790a and AD790B are rated over the industrial temperature range of -40°C to +85°C. The AD790S is rated over the military temperature range of -55°C to +125°C and is available to MIL-STD-883B, Rev. C.

Part#	Prop Delay (ns)typ	# Per Pkg	Total Power (mW)	Voltage Supply (V)	No of Supplies	Input Range (V)	Logic Output	Adjustable Hysteresis	Min Pulse Width
AD790	45	1	250	+/-15	3	-Vs to Vs -2V	TTL/CMOS	Fixed	-
AD8561	7	1	65	+/- 5	2	-5.0V to +3.0V	Diff/TTL	-	-
AD8564	8	4	150	+/- 5	2	-5.0V to +3.0V	TTL/CMOS	-	-
AD8611	5.5	1	50	3 to 5	1	0 to 3V	Diff/TTL	-	-
AD8612	5.5	2	100	3 to 5	1	0 to 3V	Diff/TTL	-	-
AD96685	6	1	120	5, -5.2	2	-2.5V to +5.0V	Diff/ECL	-	-
AD96687	6	2	240	5, -5.2	2	-2.5V to +5.0V	Diff/ECL	-	-
ADCMP551	0.75	2	60	3.3 to 5	1	-0.2 to Vcc-2V	PECL	-	700ps
ADCMP552	0.75	2	60	3.3 to 5	1	-0.2 to Vcc-2V	PECL	X	700ps
ADCMP553	0.75	1	30	3.3 to 5	1	-0.2 to Vcc-2V	PECL	-	700ps
ADCMP561	0.75	2	160	5, -5.2	2	-2 to 3V	PECL	-	700ps
ADCMP562	0.75	2	160	5, -5.2	2	-2 to 3V	PECL	X	700ps
ADCMP563	0.75	2	120	5, -5.2	2	-2 to 3V	ECL	-	700ps
ADCMP564	0.75	2	120	5, -5.2	2	-2 to 3V	ECL	X	700ps
ADCMP572	0.15	1	145	3.3 to 5	1	-0.2 to Vcci-2.1V	CML	X	80ps
ADCMP573	0.15	1	145	3.3 to 5	1	-0.2 to Vcci-2.1V	PECL	X	80ps
ADCMP580	0.15	1	240	5, -5.2	2	-2 to 3V	CML	X	80ps
ADCMP581	0.15	1	240	5, -5.2	2	-2 to 3V	ECL	X	80ps
ADCMP582	0.15	1	240	5, -5.2	2	-2 to 3V	PECL	X	80ps
ADCMP600	3	1	6	2.5 to 5.5	1	-0.2 to Vcc+0.2V	TTL/CMOS	-	3ns
ADCMP601	3	1	6	2.5 to 5.5	1	-0.2 to Vcc+0.2V	TTL/CMOS	X	3ns
ADCMP602	3	1	6	2.5 to 5.5	2	-0.2 to Vcc+0.2V	TTL/CMOS	X	3ns
ADCMP603	3	1	6	2.5 to 5.5	3	-0.5 to Vcc+0.5V	TTL/CMOS	X	3ns
ADCMP604	1.5	1	42	2.5 to 5.5	1	-0.2 to Vcc+0.2V	LVDS	-	1ns
ADCMP605	1.5	1	42	2.5 to 5.5	2	-0.2 to Vcc+0.2V	LVDS	X	1ns
ADCMP606	1	1	62	2.5 to 5.5	1	-0.2 to Vcc+0.2V	CML	-	600ps
ADCMP607	1	1	62	2.5 to 5.5	2	-0.2 to Vcc+0.2V	CML	X	600ps
ADCMP608	30	1	1	2.5 to 5.5	1	-0.2 to Vcc+0.2V	TTL/CMOS	-	35ns
ADCMP609	30	1	1	2.5 to 5.5	1	-0.2 to Vcc+0.2V	TTL/CMOS	X	35ns
CMP401	23	4	110	+/- 5	2	-5.0V to +4.0V	TTL/CMOS	-	-

The model number is a specific version of a generic that can be purchased or sampled.

Status indicates the current lifecycle of the product. This can be one of 4 stages:

• Pre-Release: The model has not been released to general production, but samples may be available.
• Production: The model is currently being produced, and generally available for purchase and sampling.
• Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
• Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).

The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

This is the acceptable operating range of the device. The various ranges specified are as follows:

• Commercial: 0 to +70 degrees Celsius
• Military : -55 to +125 degrees Celsius
• Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
• Automotive: -40 to +125 degrees Celsius

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