transparent中文意思
元器件交易网b2b
74ACTQ533  Quiet Series Octal Transparent Latch with 3-STATE Outputs
74ACTQ533  Quiet Series Octal Transparent Latch with 3-STATE Outputs
Logic Symbols
IEEE/IEC
Truth Table
H  =  HIGH Voltage Level L = LOW Voltage Level Z  =  High Impedance X  =  Immaterial
O  0  =  Previous O  0  before HIGH-to-LOW transition of Latch Enable
Functional Description
The ACTQ533 contains eight D-type latches with 3-STATE standard outputs. When the Latch Enable (LE)input is HIGH, data on the D  n  inputs enters the latches.In this condition the latches are transparent, i.e., a latch output will change state each time its D input changes.When LE is LOW, the latches store the information that was present on the D inputs at setup time preceding the H IGH -to-LOW transition of LE. The 3-STATE standard outputs are controlled by the Output Enable (OE) input.When OE is LOW, the standard outputs are in the 2-state mode. When OE is HIGH, the standard outputs are in the high impedance mode but this does not inter-fere with entering new data into the latches.
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to
estimate propagation delays.
Inputs
Outputs
LE
OE
D  n
O  n
X
H  X
Z
H  L  L
H  H  L  H
L  L
L
X
O
元器件交易网b2b
74ACTQ533  Quiet Series Octal Transparent Latch with 3-STATE Outputs
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only.
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Rec
ommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to absolute maximum ratings.
Symbol Parameter
Rating
V  CC  Supply Voltage –0.5V to +7.0V
I  IK
DC Input Diode Current V  I    =  –0.5V V  I    =  V  CC  + 0.5V
–20mA +20mA
V  I  DC Input Voltage –0.5V to V  CC  + 0.5V
I  OK
DC Output Diode Current V  O    =  –0.5V V  O    =  V  CC  + 0.5V
–20mA +20mA
V  O  DC Output Voltage
–0.5V to V  CC  + 0.5V
I  O  DC Output Source or Sink Current ±50mA I  CC  or I  GND  DC V  CC  or Ground Current per Output Pin
±50mA
T  STG  Storage Temperature
–65°C to +150°C
DC Latch-Up Source or Sink Current ±300mA T  J
Junction Temperature
140°C
Symbol Parameter
Rating
V  CC  Supply Voltage    4.5V to 5.5V V  I  Input Voltage 0V to V  CC  V  O  Output Voltage 0V to V  CC
T  A  Operating Temperature –40°C to +85°C
∆ V    /  ∆ t
Minimum Input Edge Rate:
V  IN  from 0.8V to 2.0V , V  CC
@ 4.5V , 5.5V
125mV/ns
元器件交易网b2b
74ACTQ533  Quiet Series Octal Transparent Latch with 3-STATE Outputs
DC Electrical Characteristics
Notes:
1.All outputs loaded; thresholds on input associated with output under test.
2.Maximum test duration 2.0ms, one output loaded at a time.
3.Max number of outputs defined as (n). Data inputs are driven 0V to 3V. One output @ GND.
4.Max number of data inputs (n) switching. (n–1) inputs switching 0V to 3V Input-under-test switching: 3V to threshold (V  ILD  ), 0V to threshold (V  IHD  ), f  =  1 MHz.
Symbol
Parameter
V  CC  (V)
Conditions
T  A    =  +25°C
T  A    =  –40°C to +85°C
Units
Typ.
Guaranteed Limits
V  IH  Minimum HIGH Level Input Voltage    4.5 V  OUT    =  0.1V  or V  CC  – 0.1V    1.5  2.0  2.0 V  5.5  1.5  2.0  2.0 V  IL  Maximum LOW Level Input Voltage    4.5 V  OUT    =  0.1V  or V  CC  – 0.1V    1.50.80.8 V  5.5  1.50.80.8 V  OH
Minimum HIGH Level Output Voltage
4.5 I  OUT    =  –50µA    4.49  4.4  4.4  V
5.5
5.49
5.4  5.4V  IN    =  V  IL  or V  IH  :
4.5 I  OH    =  –24mA    3.86    3.76
5.5
I  OH    =  –24mA  (1) 4.86
4.76V  OL
Maximum LOW Level Output Voltage
4.5 I  OUT    =  50µA 0.0010.1 0.1 V
5.5
0.001
0.1 0.1V  IN    =  V  IL  or V  IH :
4.5 I  OL    =  24mA 0.36 0.44
5.5
I  OL    =  24mA  (1) 0.36 0.44 I  IN  Maximum Input  Leakage Current    5.5 V  I    =  V  CC  , GND ±0.1 ±1.0 µA  I  OZ  Maximum 3-STATE Leakage Current    5.5 V  I    =  V  IL
, V IH ; V O  = V CC , GND ±0.25
±2.5 µA  I CCT Maximum I CC /Input    5.5 V I  = V CC  – 2.1V 0.6
1.5 mA  I OLD Minimum Dynamic Output Current (2)    5.5 V OLD  = 1.65V Max. 75 mA  I OHD    5.5 V OHD  = 3.85V Min. –75
mA  I CC Maximum Quiescent Supply Current    5.5 V IN  = V CC or GND    4.0
40.0
µA  V OLP Quiet Output Maximum Dynamic V OL
5.0Figures 1 & 2(3)    1.1  1.5 V  V OLV Quiet Output Minimum Dynamic V OL
5.0Figures 1 & 2(3)
–0.6–1.2 V  V IHD Minimum HIGH Level Dynamic Input Voltage    5.0(4)
1.9
2.2 V  V ILD
Maximum LOW Level Dynamic Input Voltage
5.0
(4)
1.2
0.8
V 元器件交易网b2b
Capacitance
Symbol Parameter Conditions Typ. Units
C IN Input Capacitance V CC= OPEN    4.5 pF
C P
D Power Dissipation Capacitance V CC= 5.0V 40 pF
Notes:
8.V OHV and V OLP are measured with respect to ground
reference.
9.Input pulses have the following characteristics:
f = 1MHz,  t r= 3ns, t f= 3ns, skew < 150ps.
Figure 1. Quiet Output Noise Voltage Waveforms oscilloscope has not drifted to ensure the accuracy and repeatability of the measurements.
Figure 2. Simultaneous Switching Test Circuit

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