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PI74FCT280CT

Fast CMOS 9-Bit Parity Generator/Checker

Pericom Semiconductor 

PI74FCT280T

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DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC = 5V ± 5%)

Parameters Description

Test Conditions(1)

Min Typ(2)

VOH

Output HIGH Voltage VCC = Min., VIN = VIH or VIL

IOH = –15.0 mA

2.4 3.0

VOL

Output LOW Current VCC = Min., VIN = VIH or VIL

IOL = 48 mA

0.3

VIH

Input HIGH Voltage Guaranteed Logic HIGH Level

2.0

VIL

Input LOW Voltage Guaranteed Logic LOW Level

IIH

Input HIGH Current VCC = Max.

VIN = VCC

IIL

Input LOW Current VCC = Max.

VIN = GND

VIK

Clamp Diode Voltage VCC = Min., IIN = –18 mA

IOS

Short Circuit Current VCC = Max.(3), VOUT = GND

–0.7

–60 –120

IOFF

Power Down Disable VCC = GND, VOUT = 4.5V

——

VH

Input Hysteresis

200

Max

0.50

0.8

1

–1

–1.2

100

Units

V

V

V

V

µA

µA

V

mA

µA

mV

Notes:

1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for applicable device type.

2. Typical values are at Vcc = 5.0V, +25°C ambient and maximum loading.

3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.

Switching Characteristics over Operating Range

Parameters Description

280T

Com.

Conditions(1) Min Max

tPHLE

tPLHE

tPHLO

tPLHO

Propagation Delay CL = 50 pF

I0 – I8 to ∑even RL = 500Ω

Propagation Delay

I0 – I8 to ∑odd

3.0 10.0

3.0 10.0

280AT

Com.

Min Max

3.0 7.5

3.0 7.5

280BT

Com.

Min Max

3.0 6.3

3.0 6.3

280CT

Com.

Min Max Unit

3.0 5.3 ns

3.0 5.3 ns

Notes:

1. See test circuit and waveforms.

2. Minimum limits are guaranteed but not tested on Propagation Delays.

3

PS2014A 03/11/96

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