Dual 4-Input Multiplexer, Three-State CD74AC253 CD74ACT253 dual 4
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CD74AC253, CD74ACT253
Dual 4-Input Multiplexer, Three-State
CD74AC253 CD74ACT253 dual 4-input multiplexers that utilize Harris Advanced CMOS Logic technology. four sources each section selected common Select inputs, When Output Enable (1OE 2OE) HIGH, output high-impedance state.
August 1998
Features
Buffered Inputs Typical Propagation Delay 6.3ns 25oC, 50pF Exceeds Protection MIL-STD-883, Method 3015 SCR-Latchup-Resistant CMOS Process Circuit Design Speed Bipolar FASTTM/AS/S with Significantly Reduced Power Consumption Balanced Propagation Delays Types Feature 1.5V 5.5V Operation Balanced Noise Immunity Supply ±24mA Output Drive Current Fanout FASTICs Drives Transmission Lines
Ordering Information
PART NUMBER CD74AC253E CD74ACT253E CD74AC253M CD74ACT253M NOTES: When ordering, entire part number. suffix obtain variant tape reel. Wafer this part number available which meets electrical specifications. Please contact your local sales office Harris customer service ordering information. TEMP. RANGE (oC) PACKAGE PKG. E16.3 E16.3 M16.15 M16.15
70oC, PDIP 70oC, PDIP 70oC, SOIC 70oC, SOIC
Pinout
CD74AC253, CD74ACT253 (PDIP, SOIC) VIEW
CAUTION: These devices sensitive electrostatic discharge. Users should follow proper Handling Procedures. FASTis Trademark Fairchild Semiconductor. Copyright Harris Corporation 1998
File Number
1985.1
CD74AC253, CD74ACT253 Functional Diagram
SEL/MUX SEL/MUX
TRUTH TABLE SELECT INPUTS DATA INPUTS ENABLE INPUTS OUTPUT
Select inputs common both sections. High level, inputs, Don't care, High impedance.
CD74AC253, CD74ACT253
Absolute Maximum Ratings
Supply Voltage, -0.5V Input Diode Current, -0.5V 0.5V .±20mA Output Diode Current, -0.5V 0.5V .±50mA Output Source Sink Current Output Pin, -0.5V 0.5V .±50mA Ground Current, IGND (Note .±100mA
Thermal Information
Thermal Resistance (Typical, Note (oC/W) PDIP Package SOIC Package Maximum Junction Temperature (Plastic Package) 150C Maximum Storage Temperature Range .-65oC 150oC Maximum Lead Temperature (Soldering 10s) 300oC
Operating Conditions
Temperature Range, -55oC 125oC Supply Voltage Range, (Note Types. .1.5V 5.5V Types .4.5V 5.5V Input Output Voltage, Input Rise Fall Slew Rate, dt/dv Types, 1.5V 50ns (Max) Types, 3.6V 5.5V 20ns (Max) Types, 4.5V 5.5V. 10ns (Max)
CAUTION: Stresses above those listed "Absolute Maximum Ratings" cause permanent damage device. This stress only rating operation device these other conditions above those indicated operational sections this specification implied.
NOTES: outputs device, ±25mA each additional output. Unless otherwise specified, voltages referenced ground. measured with component mounted evaluation board free air.
Electrical Specifications
TEST CONDITIONS PARAMETER TYPES High Level Input Voltage Level Input Voltage High Level Output Voltage -0.05 -0.05 -0.05 (Note (Note 3.85 2.58 3.94 1.65 3.85 2.48 3.85 1.65 3.85 3.85 1.65 SYMBOL (mA) 25oC -40oC 85oC -55oC 125oC UNITS
CD74AC253, CD74ACT253
Electrical Specifications
(Continued) TEST CONDITIONS PARAMETER Level Output Voltage SYMBOL (mA) 0.05 0.05 0.05 (Note (Note Input Leakage Current Three-State Leakage Current Quiescent Supply Current TYPES High Level Input Voltage Level Input Voltage High Level Output Voltage -0.05 (Note (Note Level Output Voltage 0.05 (Note (Note Input Leakage Current Three-State Leakage Current Quiescent Supply Current Additional Supply Current Input Inputs High Unit Load NOTES: Test output time 1-second maximum duration. Measurement made forcing current measuring voltage minimize power dissipation. Test verifies minimum transmission-line-drive capability 85oC, 125oC. -2.1 3.94 0.36 ±0.1 ±0.5 3.85 0.44 1.65 3.85 1.65 25oC 0.36 0.36 ±0.1 ±0.5 -40oC 85oC 0.44 0.44 1.65 -55oC 125oC 1.65 UNITS
CD74AC253, CD74ACT253
Input Load Table
INPUT nI0, UNIT LOAD 0.83
NOTE: Unit load limit specified Electrical Specifications Table, e.g., 2.4mA 25oC.
Switching Specifications Input 3ns, 50pF (Worst Case)
-40oC 85oC PARAMETER TYPES Propagation Delay, tPLH, tPHL (Note (Note Propagation Delay, tPLH, tPHL Propagation Delay, Output Enable, Output Disable tPLZ, tPHZ, tPZL, tPZH Three-State Output Capacitance Input Capacitance Power Dissipation Capacitance TYPES Propagation Delay, Propagation Delay, Propagation Delay, Output Enable, Output Disable Three-State Output Capacitance Input Capacitance Power Dissipation Capacitance NOTES: Limits tested 100%. 3.3V 3.6V, 5.5V, 4.5V. used determine dynamic power consumption multiplexer. VCC2 (CPD ACT: VCC2 (CPD where input frequency, output load capacitance, supply voltage. tPLH, tPHL tPLH, tPHL tPLZ, tPHZ, tPZL, tPZH (Note (Note 16.4 11.5 12.6 (Note 18.2 16.9 12.1 15.7 10.5 18.6 13.3 17.3 11.5 SYMBOL -55oC 125oC UNITS
CD74AC253, CD74ACT253
OUTPUT DISABLE
INPUT LEVEL
tPLZ OUTPUT: tPHZ OUTPUT: HIGH HIGH OUTPUTS ENABLED
tPZL 0.2VCC tPZH
GND)
VCC) OUTPUTS ENABLED (tPHZ, tPZH) OPEN (tPHL, tPLH) (tPLZ, tPZL) (OPEN DRAIN)
OUTPUTS DISABLED
OTHER INPUTS (TIED HIGH LOW) OUTPUT DISABLE
WITH THREESTATE OUTPUT
50pF
SERIES ONLY: WHEN 1.5V,
FIGURE THREE-STATE PROPAGATION DELAY WAVEFORMS TEST CIRCUIT
INPUT LEVEL
OUTPUT tPLH tPHL
FIGURE PROPAGATION DELAY TIMES
OUTPUT (NOTE) OUTPUT LOAD 50pF
NOTE: Series Only: When 1.5V, CD74AC Input Level Input Switching Voltage, Output Switching Voltage, CD74ACT 1.5V
FIGURE PROPAGATION DELAY TIMES
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Copyright 1999, Texas Instruments Incorporated
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