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SN54AHC16540, SN74AHC16540 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
Members Texas Instruments Widebus Family Operating Range 5.5-V EPIC (Enhanced-Performance Implanted CMOS) Process Distributed Configuration Minimizes High-Speed Switching Noise Flow-Through Architecture Optimizes Layout Package Options Include Plastic 300-mil Shrink Small-Outline (DL) Thin Shrink Small-Outline (DGG) Packages 380-mil Fine-Pitch Ceramic Flat (WD) Package Using 25-mil Center-to-Center Spacings
SN54AHC16540 PACKAGE SN74AHC16540 PACKAGE (TOP VIEW)
description
These 16-bit buffers drivers provide high-performance interface wide data paths. 3-state control gate 2-input gate with active-low inputs that either output-enable (OE1 OE2) input high, corresponding outputs high-impedance state. SN54AHC16540 characterized operation over full military temperature range -55°C 125°C. SN74AHC16540 characterized operation from -40°C 85°C.
FUNCTION TABLE (each 8-bit section) INPUTS OUTPUT
Please aware that important notice concerning availability, standard warranty, critical applications Texas Instruments semiconductor products disclaimers thereto appears this data sheet. EPIC Widebus trademarks Texas Instruments Incorporated.
PRODUCT PREVIEW information concerns products formative design phase development. Characteristic data other specifications design goals. Texas Instruments reserves right change discontinue these products without notice.
Copyright 1997, Texas Instruments Incorporated
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PRODUCT PREVIEW
1OE1 2OE1
1OE2 2OE2
SN54AHC16540, SN74AHC16540 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
logic symbol
1OE1 1OE2 2OE1 2OE2
PRODUCT PREVIEW
This symbol accordance with ANSI/IEEE 91-1984 Publication 617-12.
logic diagram (positive logic)
1OE1 1OE2 2OE1 2OE2
Seven Other Channels
Seven Other Channels
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SN54AHC16540, SN74AHC16540 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, -0.5 Input voltage range, (see Note -0.5 Output voltage range, (see Note -0.5 Input clamp current, Output clamp current, VCC) Continuous output current, VCC) Continuous current through each Package thermal impedance, (see Note package 89°C/W package 94°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
recommended operating conditions (see Note
SN54AHC16540 Supply voltage High-level voltage High input Low-level input voltage Input voltage Output voltage High-level output current High Low-level output current 3.85 1.65 SN74AHC16540 3.85 1.65 UNIT
ns/V
Input transition rise fall rate
Operating free-air temperature NOTE Unused inputs must held high prevent them from floating.
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PRODUCT PREVIEW
SN54AHC16540, SN74AHC16540 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS Data inputs Control inputs GND, (OE) GND, 2.58 3.94 0.36 0.36 ±0.1 ±0.1 ±0.25 25°C SN54AHC16540 2.48 ±2.5 SN74AHC16540 2.48 0.44 0.44 ±2.5 UNIT
PRODUCT PREVIEW
switching characteristics over recommended operating free-air temperature range, (unless otherwise noted) (see Figure
PARAMETER tPLH* tPHL* tPZH* tPZL* tPHZ* tPLZ* tPLH tPHL tPZH tPZL tPHZ tPLZ FROM (INPUT) (OUTPUT) LOAD CAPACITANCE 25°C 10.5 10.5 10.5 10.5 10.5 10.5 15.4 15.4 SN54AHC16540 12.5 12.5 12.5 12.5 17.5 17.5 SN74AHC16540 12.5 12.5 12.5 12.5 17.5 17.5 UNIT
products compliant MIL-PRF-38535, this parameter ensured production tested.
POST OFFICE 655303
DALLAS, TEXAS 75265
SN54AHC16540, SN74AHC16540 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
switching characteristics over recommended operating free-air temperature range, (unless otherwise noted) (see Figure
PARAMETER tPLH* tPHL* tPZH* tPZL* tPHZ* tPLZ* tPLH tPHL tPZH tPZL tPHZ tPLZ FROM (INPUT) (OUTPUT) LOAD CAPACITANCE 25°C SN54AHC16540 10.5 10.5 SN74AHC16540 10.5 10.5 UNIT
output-skew characteristics, (see Note
SN74AHC16540 PARAMETER FROM (INPUT) (OUTPUT) 25°C UNIT
tsk(o)
NOTE Characteristics determined during product characterization ensured design.
noise characteristics, 25°C (see Note
PARAMETER VOL(P) VOL(V) VOH(V) VIH(D) Quiet output, maximum dynamic Quiet output, minimum dynamic Quiet output, minimum dynamic High-level dynamic input voltage SN74AHC16540 -0.8 UNIT
VIL(D) Low-level dynamic input voltage NOTE Characteristics determined during product characterization ensured design surface-mount packages only.
operating characteristics, 25°C
PARAMETER Power dissipation capacitance TEST CONDITIONS load, UNIT
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PRODUCT PREVIEW
products compliant MIL-PRF-38535, this parameter ensured production tested.
SN54AHC16540, SN74AHC16540 16-BIT BUFFERS/DRIVERS WITH 3-STATE OUTPUTS
PARAMETER MEASUREMENT INFORMATION
From Output Under Test (see Note Open TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open
LOAD CIRCUIT Input tPLH In-Phase Output tPHL Out-of-Phase Output VOLTAGE WAVEFORMS DELAY TIMES tPHL tPLH Output Waveform (see Note Output Control (low-level enabling) Output Waveform (see Note tPZL tPZH tPLZ tPHZ
PRODUCT PREVIEW
VOLTAGE WAVEFORMS ENABLE DISABLE TIMES
NOTES: includes probe 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. input pulses supplied generators having following characteristics: MHz, outputs measured time with input transition measurement.
Figure Load Circuit Voltage Waveforms
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IMPORTANT NOTICE Texas Instruments (TI) reserves right make changes products discontinue semiconductor product service without notice, advises customers obtain latest version relevant information verify, before placing orders, that information being relied current. warrants performance semiconductor products related software specifications applicable time sale accordance with TI's standard warranty. Testing other quality control techniques utilized extent deems necessary support this warranty. Specific testing parameters each device necessarily performed, except those mandated government requirements. Certain applications using semiconductor products involve potential risks death, personal injury, severe property environmental damage ("Critical Applications"). SEMICONDUCTOR PRODUCTS DESIGNED, INTENDED, AUTHORIZED, WARRANTED SUITABLE LIFE-SUPPORT APPLICATIONS, DEVICES SYSTEMS OTHER CRITICAL APPLICATIONS. Inclusion products such applications understood fully risk customer. products such applications requires written approval appropriate officer. Questions concerning potential risk applications should directed through local sales office. order minimize risks associated with customer's applications, adequate design operating safeguards should provided customer minimize inherent procedural hazards. assumes liability applications assistance, customer product design, software performance, infringement patents services described herein. does warrant represent that license, either express implied, granted under patent right, copyright, mask work right, other intellectual property right covering relating combination, machine, process which such semiconductor products services might used.
Copyright 1996, Texas Instruments Incorporated

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