DM74S280MX Просмотр технического описания (PDF) - Fairchild Semiconductor

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DM74S280MX

9-Bit Parity Generator/Checker

Fairchild Semiconductor 

Absolute Maximum Ratings(Note 1)

Supply Voltage

7V

Input Voltage

5.5V

Operating Free Air Temperature Range 0°C to +70°C

Storage Temperature Range

−65°C to +150°C

Note 1: The “Absolute Maximum Ratings” are those values beyond which

the safety of the device cannot be guaranteed. The device should not be

operated at these limits. The parametric values defined in the Electrical

Characteristics tables are not guaranteed at the absolute maximum ratings.

The “Recommended Operating Conditions” table will define the conditions

for actual device operation.

Recommended Operating Conditions

Symbol

VCC

VIH

VIL

IOH

IOL

TA

Parameter

Supply Voltage

HIGH Level Input Voltage

LOW Level Input Voltage

HIGH Level Output Current

LOW Level Output Current

Free Air Operating Temperature

Min

4.75

2

0

Electrical Characteristics

over recommended operating free air temperature range (unless otherwise noted)

Symbol

Parameter

Conditions

Nom

5

Min

VI

Input Clamp Voltage

VCC = Min, II=−18 mA

VOH

HIGH Level

Output Voltage

VOL

LOW Level

Output Voltage

VCC = Min, IOH = Max

2.7

VIL = Max, VIH = Min

VCC = Min, IOL =Max

VIH = Min, VIL = Max

II

Input Current @ Max Input Voltage

VCC = Max, VI = 5.5V

IIH

HIGH Level Input Current

VCC = Max, VI = 2.7V

IIL

LOW Level Input Current

VCC = Max, VI = 0.5V

IOS

Short Circuit Output Current

VCC = Max (Note 3)

−40

ICC

Supply Current

VCC Max (Note 4)

Note 2: All typicals are at VCC = 5V, TA = 25°C.

Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second.

Note 4: ICC is measured with all inputs grounded and all outputs OPEN.

Switching Characteristics

at VCC = 5V and TA = 25°C

Symbol

Parameter

tPLH

Propagation Delay Time

LOW-to-HIGH Level Output

tPHL

Propagation Delay Time

HIGH-to-LOW Level Output

tPLH

Propagation Delay Time

LOW-to-HIGH Level Output

tPHL

Propagation Delay Time

HIGH-to-LOW Level Output

From (Input)

To (Output)

Data to ∑ Even

Data to ∑ Even

Data to ∑ Odd

Data to ∑ Odd

RL = 280Ω

CL = 15 pF

Min

Max

21

18

21

18

Max

Units

5.25

V

V

0.8

V

−1

mA

20

mA

70

°C

Typ

(Note 2)

3.4

67

Max

−1.2

0.5

1

50

−2

−100

105

Units

V

V

V

mA

µA

mA

mA

mA

RL = 280Ω

CL = 50 pF

Min

Max

24

21

24

21

Units

ns

ns

ns

ns

3

www.fairchildsemi.com

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