74LCX16821MEA datasheet(4/8 Pages) FAIRCHILD

Nome de Peças	74LCX16821MEA

Descrição Electrónicos	Low Voltage 20-Bit D-Type Flip-Flop with 5V Tolerant Inputs and Outputs

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Fabricante Electrônico	FAIRCHILD [Fairchild Semiconductor]

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4

DC Electrical Characteristics (Continued)

Note 5: Outputs disabled or 3-STATE only.

AC Electrical Characteristics

Note 6: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The

specification applies to any outputs switching in the same direction, either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH).

Dynamic Switching Characteristics

Capacitance

Symbol

Parameter

Conditions

VCC

(V)

TA = −40°C to +85°C

Units

Min

Max

ICC

Quiescent Supply Current

VI = VCC or GND

2.3

− 3.6

20

µA

3.6V

≤ V

I, VO ≤ 5.5V (Note 5)

2.3

− 3.6

±20

∆I

CC

Increase in ICC per Input

VIH = VCC −0.6V

2.3

− 3.6

500

µA

Symbol

Parameter

TA = −40°C to +85°C, RL = 500Ω

Units

VCC = 3.3V ± 0.3V

VCC = 2.7V

VCC = 2.5V ± 0.2V

CL = 50 pF

CL = 30 pF

Min

Max

Min

Max

Min

Max

fMAX

Maximum Clock Frequency

150

MHz

tPHL

Propagation Delay

1.5

6.2

1.5

6.5

1.5

7.4

ns

tPLH

CLK to On

1.5

6.2

1.5

6.5

1.5

7.4

tPZL

Output Enable Time

1.5

6.5

1.5

7.0

1.5

8.5

ns

tPZH

1.5

6.5

1.5

7.0

1.5

8.5

tPLZ

Output Disable Time

1.5

6.5

1.5

7.0

1.5

7.8

ns

tPHZ

1.5

6.5

1.5

7.0

1.5

7.8

tOSHL

Output to Output Skew (Note 6)

1.0

ns

tOSLH

1.0

tS

Setup Time, Dn to CLK

2.5

3.0

ns

tH

Hold Time, Dn to CLK

1.5

2.0

ns

tW

CLK Pulse Width

3.3

3.8

ns

Symbol

Parameter

Conditions

VCC

(V)

TA = 25°C

Units

Typical

VOLP

Quiet Output Dynamic Peak VOL

CL = 50 pF, VIH = 3.3V, VIL = 0V

3.3

1.0

V

CL = 30 pF, VIH = 2.5V, VIL = 0V

2.5

0.6

VOLV

Quiet Output Dynamic Valley VOL

CL = 50 pF, VIH = 3.3V, VIL = 0V

3.3

−0.8

V

CL = 30 pF, VIH = 2.5V, VIL = 0V

2.5

−0.6

Symbol

Parameter

Conditions

Typical

Units

CIN

Input Capacitance

VCC = Open, VI = 0V or VCC

7pF

CO

Output Capacitance

VCC = 3.3V, VI = 0V or VCC

8pF

CPD

Power Dissipation Capacitance

VCC = 3.3V, VI = 0V or VCC, f = 10 MHz

20

pF

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