74LVT322373 datasheet(5/6 Pages) FAIRCHILD

Numer części	74LVT322373

Szczegółowy opis	Low Voltage 32-Bit Transparent Latch with 3-STATE Outputs and 25??Series Resistors in the Outputs

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DC Electrical Characteristics (Continued)

Note 5: An external driver must source at least the specified current to switch from LOW-to-HIGH.

Note 6: An external driver must sink at least the specified current to switch from HIGH-to-LOW.

Note 7: This is the increase in supply current for each input that is at the specified voltage level rather than VCC or GND.

Dynamic Switching Characteristics (Note 8)

Note 8: Characterized in SSOP package. Guaranteed parameter, but not tested.

Note 9: Max number of outputs defined as (n). n

−1 data inputs are driven 0V to 3V. Output under test held LOW.

AC Electrical Characteristics

Note 10: 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).

Capacitance (Note 11)

Note 11: Capacitance is measured at frequency f

= 1 MHz, per MIL-STD-883, Method 3012.

Symbol

Parameter

VCC

T A = −40°C to +85°C

Units

Conditions

(V)

Min

Max

ICCZ+

Power Supply Current

(VCC1 or VCC2)

3.6

0.19

mA

VCC ≤ VO ≤ 5.5V,

Outputs Disabled

∆I

CC

Increase in Power Supply Current

(VCC1 or VCC2)

3.6

0.2

mA

One Input at VCC − 0.6V

(Note 7)

Other Inputs at VCC or GND

Symbol

Parameter

VCC

TA = 25°C

Units

Conditions

(V)

Min

Typ

Max

CL = 50 pF, RL = 500Ω

VOLP

Quiet Output Maximum Dynamic VOL

3.3

0.8

V

(Note 9)

VOLV

Quiet Output Minimum Dynamic VOL

3.3

−0.8

V

(Note 9)

Symbol

Parameter

TA = −40°C to +85°C, CL= 50pF, RL= 500Ω

Units

VCC = 3.3V ± 0.3V

VCC = 2.7V

Min

Max

Min

Max

tPHL

Propagation Delay

1.3

4.8

1.3

5.3

ns

tPLH

Dn to On

1.4

4.8

1.4

5.1

tPHL

Propagation Delay

1.7

5.0

1.7

5.1

ns

tPLH

LE to On

1.4

5.1

1.4

5.8

tPZL

Output Enable Time

1.6

5.0

1.6

6.0

ns

tPZH

1.0

5.4

1.0

6.6

tPLZ

Output Disable Time

1.6

5.1

1.6

5.0

ns

tPHZ

1.8

5.4

1.8

5.7

tS

Setup Time, Dn to LE

1.0

0.8

ns

tH

Hold Time, Dn to LE

1.0

1.1

ns

tW

LE Pulse Width

3.0

ns

tOSHL

Output to Output Skew (Note 10)

1.0

ns

tOSLH

1.0

Symbol

Parameter

Conditions

Typical

Units

CIN

Input Capacitance

VCC = Open, VI = 0V or VCC

4pF

COUT

Output Capacitance

VCC = 3.0V, VO = 0V or VCC

8pF

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