Texas Instruments CD74ACT280M96, CD74ACT280M, CD74ACT280E, CD74AC280M96, CD74AC280M Datasheet

Data sheet acquired from Harris Semiconductor SCHS250

August 1998

CD74AC280,

CD74ACT280

9-Bit Odd/Even Parity Generator/Checker

Features

•Buffered Inputs

•Typical Propagation Delay

- 10ns at VCC = 5V, TA = 25oC, CL = 50pF

•Exceeds 2kV ESD Protection MIL-STD-883, Method 3015

•SCR-Latchup-Resistant CMOS Process and Circuit Design

•Speed of Bipolar FAST™/AS/S with Significantly Reduced Power Consumption

Description

The CD74AC280 and CD74ACT280 9-bit odd/even parity generator/checkers that utilize the Harris Advanced CMOS Logic technology. Bothe even and odd parity outputs are available for checking or generating parity for words up to nine bits long. Even parity is indicated (åEoutput is HIGH) when an even number of data inputs is HIGH. Odd parity is indicated (åO output is HIGH) when an odd number of data inputs is HIGH. Parity checking for words larger than nine bits can be accomplished by tying the åE output to any input of an additional AC/ACT280 parity checker.

•Balanced Propagation Delays

•AC Types Feature 1.5V to 5.5V Operation and Balanced Noise Immunity at 30% of the Supply

•±24mA Output Drive Current

-Fanout to 15 FAST™ ICs

-Drives 50W Transmission Lines

Pinout

CD74AC280, CD74ACT280

(PDIP, SOIC)

TOP VIEW

Ordering Information

PART	TEMP.			PKG.
NUMBER	RANGE (oC)	PACKAGE		NO.
CD74AC280E	0 to 70oC, -40 to 85,	14	Ld PDIP	E14.3
	-55 to 125
CD74ACT280E	0 to 70oC, -40 to 85,	14	Ld PDIP	E14.3
	-55 to 125
CD74AC280M	0 to 70oC, -40 to 85,	14	Ld SOIC	M14.15
	-55 to 125
CD74ACT280M	0 to 70oC, -40 to 85,	14 Ld SOIC		M14.15
	-55 to 125
NOTES:

1.When ordering, use the entire part number. Add the suffix 96 to obtain the variant in the tape and reel.

I6	1		14	VCC
I7				I5
	2		13
NC				I4
	3		12
I8				I3
	4		11
åE				I2
	5		10
åO				I1
	6		9
GND				I0
	7		8

2.Wafer and die for this part number is available which meets all electrical specifications. Please contact your local sales office or Harris customer service for ordering information.

Functional Diagram

8

I0

9

I1

10

I2

11

I3

12

I4

13

I5

1

I6

2

I7

4

I8

5

å EVEN

6

å ODD

GND = 7

VCC = 14

NC = 3

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

File Number 1957.1

	FAST™ is a Trademark of Fairchild Semiconductor.	1
	Copyright © Harris Corporation 1998

CD74AC280, CD74ACT280

Absolute Maximum Ratings

DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . .	-0.5V to 6V
DC Input Diode Current, IIK	±20mA
For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . .
DC Output Diode Current, IOK	±50mA
For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . .
DC Output Source or Sink Current per Output Pin, IO	±50mA
For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . .
DC VCC or Ground Current, ICC or IGND (Note 3) . . . . . .	. . .±100mA

Thermal Information

Thermal Resistance (Typical, Note 5)	θJA (oC/W)
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. ___
SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. ___
Maximum Junction Temperature (Plastic Package) . . .	. . . . . . . 150oC
Maximum Storage Temperature Range . . . . . . . . . .	-65oC to 150oC
Maximum Lead Temperature (Soldering 10s) . . . . . .	. . . . . . . 300oC

Operating Conditions

Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC

Supply Voltage Range, VCC (Note 4)

AC Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5V to 5.5V

ACT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V

DC Input or Output Voltage, VI, VO . . . . . . . . . . . . . . . . . 0V to VCC

Input Rise and Fall Slew Rate, dt/dv

AC Types, 1.5V to 3V . . . . . . . . . . . . . . . . . . . . . . . . . 50ns (Max)

AC Types, 3.6V to 5.5V . . . . . . . . . . . . . . . . . . . . . . . . 20ns (Max)

ACT Types, 4.5V to 5.5V. . . . . . . . . . . . . . . . . . . . . . . 10ns (Max)

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTES:

3.For up to 4 outputs per device, add ±25mA for each additional output.

4.Unless otherwise specified, all voltages are referenced to ground.

5.θJA is measured with the component mounted on an evaluation PC board in free air.

DC Electrical Specifications

		TEST					-40oC TO		-55oC TO
		CONDITIONS		VCC	25oC		85oC		125oC
PARAMETER	SYMBOL	VI (V)	IO (mA)	(V)	MIN	MAX	MIN	MAX	MIN	MAX	UNITS
AC TYPES
High Level Input Voltage	VIH	-	-	1.5	1.2	-	1.2	-	1.2	-	V
				3	2.1	-	2.1	-	2.1	-	V
				5.5	3.85	-	3.85	-	3.85	-	V
Low Level Input Voltage	VIL	-	-	1.5	-	0.3	-	0.3	-	0.3	V
				3	-	0.9	-	0.9	-	0.9	V
				5.5	-	1.65	-	1.65	-	1.65	V
High Level Output Voltage	VOH	VIH or VIL	-0.05	1.5	1.4	-	1.4	-	1.4	-	V
			-0.05	3	2.9	-	2.9	-	2.9	-	V
			-0.05	4.5	4.4	-	4.4	-	4.4	-	V
			-4	3	2.58	-	2.48	-	2.4	-	V
			-24	4.5	3.94	-	3.8	-	3.7	-	V
			-75	5.5	-	-	3.85	-	-	-	V
			(Note 6, 7)
			-50	5.5	-	-	-	-	3.85	-	V
			(Note 6, 7)

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