3-State Version 'HC153 High-Current Inverting Outputs Drive LSTTL Load
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SN54HC253, SN74HC253 DUAL 4-LINE 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
3-State Version 'HC153 High-Current Inverting Outputs Drive LSTTL Loads Permit Multiplexing from Lines Line Perform Parallel-to-Serial Conversion Package Options Include Plastic Small-Outline Ceramic Flat Packages, Ceramic Chip Carriers (FK), Standard Plastic Ceramic 300-mil DIPs
SN54HC253 PACKAGE SN74HC253 PACKAGE (TOP VIEW)
description
Each these data selectors/multiplexers contain inverters drivers supply full binary decoding data selection AND-OR gates. Separate output-control inputs provided each 4-line sections. 3-state outputs interface with drive data lines bus-organized systems. With common outputs disabled high-impedance state), impedance single enabled output drives line high logic level. Each output output-enable (OE) input. outputs disabled when their respective high.
SN54HC253 PACKAGE (TOP VIEW)
internal connection
SN54HC253 characterized operation over full military temperature range -55°C 125°C. SN74HC253 characterized operation from -40°C
FUNCTION TABLE INPUTS SELECT DATA OUTPUT
Select inputs common both sections.
Please aware that important notice concerning availability, standard warranty, critical applications Texas Instruments semiconductor products disclaimers thereto appears this data sheet.
Copyright 1997, Texas Instruments Incorporated
PRODUCTION DATA information current publication date. Products conform specifications terms Texas Instruments standard warranty. Production processing does necessarily include testing parameters.
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SN54HC253, SN74HC253 DUAL 4-LINE 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
logic symbol
This symbol accordance with ANSI/IEEE 91-1984 Publication 617-12. numbers shown packages.
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SN54HC253, SN74HC253 DUAL 4-LINE 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
logic diagram (positive logic)
numbers shown packages.
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SN54HC253, SN74HC253 DUAL 4-LINE 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
absolute maximum ratings over operating free-air temperature range
Supply voltage range, -0.5 Input clamp current, VCC) (see Note Output clamp current, VCC) (see Note Continuous output current, VCC) Continuous current through Package thermal impedance, (see Note package 113°C/W package 78°C/W Storage temperature range, Tstg -65°C 150°C
Stresses beyond those listed under "absolute maximum ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated under "recommended operating conditions" implied. Exposure absolute-maximum-rated conditions extended periods affect device reliability. NOTES: input output voltage ratings exceeded input output current ratings observed. package thermal impedance calculated accordance with JESD except through-hole packages, which trace length zero.
recommended operating conditions
SN54HC253 Supply voltage High-level input voltage Low-level input voltage Input voltage Output voltage Input transition (rise fall) time Operating free-air temperature 3.15 1.35 1000 SN74HC253 3.15 1.35 1000 UNIT
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SN54HC253, SN74HC253 DUAL 4-LINE 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS -7.8 3.98 5.48 25°C 1.998 4.499 5.999 0.002 0.001 0.001 0.17 0.15 ±0.1 ±0.01 0.26 0.26 ±100 ±0.5 SN54HC253 ±1000 SN74HC253 3.84 5.34 0.33 0.33 ±1000 UNIT
switching characteristics over recommended operating free-air temperature range, (unless otherwise noted) (see Figure
PARAMETER FROM (INPUT) (OUTPUT) Data (Any tdis 25°C SN54HC253 SN74HC253 UNIT
POST OFFICE 655303
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SN54HC253, SN74HC253 DUAL 4-LINE 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
switching characteristics over recommended operating free-air temperature range, (unless otherwise noted) (see Figure
PARAMETER FROM (INPUT) (OUTPUT) Data (Any 25°C SN54HC253 SN74HC253 UNIT
operating characteristics, 25°C
PARAMETER Power dissipation capacitance multiplexer TEST CONDITIONS load UNIT
POST OFFICE 655303
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SN54HC253, SN74HC253 DUAL 4-LINE 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS
PARAMETER MEASUREMENT INFORMATION
PARAMETER Test Point tPZH tPZL tPHZ tPLZ Open Closed Open Closed Open Closed Open Closed Open Open
From Output Under Test (see Note
tdis
LOAD CIRCUIT Input tPLH In-Phase Output tPHL Out-of-Phase Output tPLH tPHL
Output Control (Low-Level Enabling) tPZL Output Waveform (See Note tPZH
tPLZ tPHZ
VOLTAGE WAVEFORMS PROPAGATION DELAY OUTPUT TRANSITION TIMES
Input
Output Waveform (See Note
VOLTAGE WAVEFORM INPUT RISE FALL TIMES
VOLTAGE WAVEFORMS ENABLE DISABLE TIMES 3-STATE OUTPUTS
NOTES: includes probe test-fixture capacitance. Waveform output with internal conditions such that output except when disabled output control. Waveform output with internal conditions such that output high except when disabled output control. Phase relationships between waveforms were chosen arbitrarily. input pulses supplied generators having following characteristics: MHz, outputs measured time with input transition measurement. tPLZ tPHZ same tdis. tPZL tPZH same ten. tPLH tPHL same tpd.
Figure Load Circuit Voltage Waveforms
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Copyright 1998, Texas Instruments Incorporated
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