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Part: 74F573SJX
Category:
Description: Octal D-type Latch With 3-STATE Outputs
Company: Fairchild Semiconductor
Datasheet: Download 74F573SJX datasheet File size : 222 kB
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74F573 Octal D-Type Latch with 3-STATE Outputs
April 1988 Revised October 2000
74F573 Octal D-Type Latch with 3-STATE Outputs
General Description
The 74F573 is a high speed octal latch with buffered common Latch Enable (LE) and buffered common Output Enable (OE) inputs. This device is functionally identical to the 74F373 but has different pinouts.
Features
s Inputs and outputs on opposite sides of package allowing easy interface with microprocessors s Useful as input or output port for microprocessors s Functionally identical to 74F373 s 3-STATE outputs for bus interfacing s Guaranteed 4000V minimum ESD protection
Ordering Code:
Order Number 74F573SC 74F573SJ 74F573PC Package Number M20B M20D N20A Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter "X" to the ordering code.
Logic Symbols
Connection Diagram
IEEE/IEC
© 2000 Fairchild Semiconductor Corporation
DS009566
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74F573
Unit Loading/Fan Out
Pin Names D0D7 LE OE O0O7 Data Inputs Latch Enable Input (Active HIGH) 3-STATE Output Enable Input (Active LOW) 3-STATE Latch Outputs Description U.L. HIGH/LOW 1.0/1.0 1.0/1.0 1.0/1.0 150/40(33.3) Input IIH/IIL Output IOH/IOL 20 µA/-0.6 mA 20 µA/-0.6 mA 20 µA/-0.6 mA
-3 mA/24 mA (20 mA)
Functional Description
The 74F573 contains eight D-type latches with 3-state output buffers. When the Latch Enable (LE) input is HIGH, data on the Dn 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 a setup time preceding the HIGH-to-LOW transition of LE. The 3-state buffers are controlled by the Output Enable (OE) input. When OE is LOW, the buffers are in the bi-state mode. When OE is HIGH the buffers are in the high impedance mode but this does not interfere with entering new data into the latches.
Function Table
Inputs OE L L L H LE H H L X D H L X X Outputs O H L O0 Z
H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial O0 = Value stored from previous clock cycle
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.
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74F573
Absolute Maximum Ratings(Note 1)
Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias VCC Pin Potential to Ground Pin Input Voltage (Note 2) Input Current (Note 2) Voltage Applied to Output in HIGH State (with VCC = 0V) Standard Output 3-STATE Output Current Applied to Output in LOW State (Max) ESD Last Passing Voltage (Min) twice the rated IOL (mA) 4000V
-65°C to +150°C -55°C to +125°C -55°C to +150°C -0.5V to +7.0V -0.5V to +7.0V -30 mA to +5.0 mA
Recommended Operating Conditions
Free Air Ambient Temperature Supply Voltage 0°C to +70°C
+4.5V to +5.5V
-0.5V to VCC -0.5V to +5.5V
Note 1: Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired. Functional operation under these conditions is not implied. Note 2: Either voltage limit or current limit is sufficient to protect inputs.
DC Electrical Characteristics
Symbol VIH VIL VCD VOH Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage 10% VCC 10% VCC 5% VCC 5% VCC VOL IIH IBVI ICEX VID IOD IIL IOZH IOZL IOS IZZ ICCL ICCZ Output LOW Voltage Input HIGH Current Input HIGH Current Breakdown Test Output HIGH Leakage Current Input Leakage Test Output Leakage Circuit Current Input LOW Current Output Leakage Current Output Leakage Current Output Short-Circuit Current Bus Drainage Test Power Supply Current Power Supply Current 35 35 -60 4.75 3.75 -0.6 50 -50 -150 500 55 55 10% VCC 2.5 2.4 2.7 2.7 0.5 20.0 5.0 7.0 50 V µA µA µA V µA mA µA µA mA µA mA mA Min Max Max Max 0 .0 0 .0 Max Max Max Max 0.0V Max Max V Min M in 2.0 0.8 -1.2 Typ Max Units V V V Min V CC Conditions Recognized as a HIGH Signal Recognized as a LOW Signal IIN = -18 mA IOH = -1 mA IOH = -3 mA IOH = -1 mA IOH = -3 mA IOL = 24 mA VIN = 2.7V VIN = 7.0V VOUT = VCC IID = 1.9 µA All Other Pins Grounded VIOD = 150 mV All Other Pins Grounded VIN = 0.5V VOUT = 2.7V VOUT = 0.5V VOUT = 0V VOUT = 5.25V VO = LOW VO = HIGH Z
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74F573
AC Electrical Characteristics
TA = +25°C Symbol Parameter Min tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ Output Disable Time Propagation Delay Dn to On Propagation Delay LE to On Output Enable Time 3 .0 2 .0 5.0 3 .0 2.0 2.0 1.5 1 .5 VCC = +5.0V CL = 50 pF Typ 5.3 3 .7 9.0 5 .2 5.0 5 .6 4 .5 3 .8 Max 7.0 6.0 11.0 7.0 8.0 8.5 5.5 5.5 TA = -55°C to +125°C VCC = +5.0V CL = 50 pF M in 3.0 2 .0 5.0 3 .0 2.0 2 .0 1 .5 1 .5 Max 9 .0 7 .0 13.5 7 .5 10.0 10.0 7.0 5 .5 TA = 0°C to +70°C VCC = +5.0V CL = 50 pF M in 3.0 2.0 5.0 3.0 2.0 2.0 1.5 1.5 Max 8 .0 6 .5 12.0 7 .0 9.0 9.5 6.5 5 .5 ns ns ns Units
AC Operating Requirements
TA = +25°C Symbol Parameter VCC = +5.0V Min tS(H) tS(L) tH(H) tH(L) tW(H) Setup Time, HIGH or LOW Dn to LE Hold Time, HIGH or LOW Dn to LE LE Pulse Width, HIGH 2.0 2.0 3.0 3.5 4.0 M ax TA = -55°C to +125°C VCC = +5.0V Min 2.0 2 .0 3.0 4 .0 4 .0 Max TA = 0°C to +70°C VCC = +5.0V Min 2 .0 2.0 3 .0 3.5 4.0 ns ns M ax Units
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74F573
Physical Dimensions inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide Package Number M20B
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