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SN65ALS180, SN75ALS180 DIFFERENTIAL DRIVER AND RECEIVER PAIRS
SLLS052F - AUGUST 1987 - REVISED JUNE 2000
D D D D D D D D D D D D D D D
Meet or Exceed the Requirements of TIA/EIA-422-B, TIA/EIA-485-A and ITU Recommendation V.11 High-Speed Advanced Low-Power Schottky Circuitry Designed for 25-Mbaud Operation in Both Serial and Parallel Applications Low Skew Between Devices . . . 6 ns Max Low Supply-Current Requirements . . . 30 mA Max Individual Driver and Receiver I/O Pins With Dual VCC and Dual GND Wide Positive and Negative Input/Output Bus Voltage Ranges Driver Output Capacity . . . 60 mA Thermal Shutdown Protection Driver Positive- and Negative-Current Limiting Receiver Input Impedance . . . 12 k Min Receiver Input Sensitivity . . . 200 mV Max Receiver Input Hysteresis . . . 60 mV Typ Operate From a Single 5-V Supply Glitch-Free Power-Up and Power-Down Protection
D OR N PACKAGE (TOP VIEW)
NC R RE DE D GND GND
1 2 3 4 5 6 7
14 13 12 11 10 9 8
VCC VCC A B Z Y NC
NC - No internal connection
description
The SN65ALS180 and SN75ALS180 differential driver and receiver pairs are monolithic integrated circuits designed for bidirectional data communication on multipoint bus-transmission lines. They are designed for balanced transmission lines and meet TIA/EIA-422-B, TIA/EIA-485-A, and ITU Recommendation V.11. The SN65ALS180 and SN75ALS180 combine a 3-state differential line driver and a differential input line receiver, both of which operate from a single 5-V power supply. The driver and receiver have active-high and active-low enables, respectively, that can be connected together externally to function as a direction control. The driver differential outputs and the receiver differential inputs are connected to separate terminals for greater flexibility and are designed to offer minimum loading to the bus when the driver is disabled or VCC = 0. These ports feature wide positive and negative common-mode voltage ranges, making the device suitable for party-line applications. The SN65ALS180 is characterized for operation from -40C to 85C. The SN75ALS180 is characterized for operation from 0C to 70C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. These devices meet or exceed the requirements of TIA/EIA-485-A, except for the Generator Contention Test (para. 3.4.2) and the Generator Current Limit (para. 3.4.3). The applied test voltage ranges are -6 V to 8 V for the SN75ALS180 and -4 V to 8 V for the SN65ALS180.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright (c) 2000, Texas Instruments Incorporated
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SN65ALS180, SN75ALS180 DIFFERENTIAL DRIVER AND RECEIVER PAIRS
SLLS052F - AUGUST 1987 - REVISED JUNE 2000
Function Tables
DRIVER INPUT D H L X ENABLE DE H H L RECEIVER DIFFERENTIAL INPUTS A-B VID 0.2 V -0.2 V < VID < 0.2 V VID -0.2 V X Open ENABLE RE L L L H L OUTPUT R H ? L Z H OUTPUTS Y H L Z Z L H Z
H = high level, L = low level, ? = indeterminate, X = irrelevant, Z = high impedance (off)
logic symbol
DE D RE R 4 5 3 2 EN2 2 EN1 9 1 1 10 12 11 Y Z A B
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
DE D RE R 4 5 3 9 2 10 9 10 Y Z
Y Z
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SN65ALS180, SN75ALS180 DIFFERENTIAL DRIVER AND RECEIVER PAIRS
SLLS052F - AUGUST 1987 - REVISED JUNE 2000
schematics of inputs and outputs
EQUIVALENT OF EACH INPUT VCC R(eq) RECEIVER A INPUT VCC 180 k NOM 18 k NOM Input Input 3 k NOM RECEIVER B INPUT VCC
Input
18 k NOM
3 k NOM
180 k NOM 1.1 k NOM Driver and Driver Enable Inputs: R(eq) = 12 k NOM Receiver Enable Input: R(eq) = 30 k NOM R(eq) = Equivalent Resistor 1.1 k NOM
DRIVER OUTPUT VCC
TYPICAL OF RECEIVER OUTPUT 85 NOM VCC
Output Output
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SN65ALS180, SN75ALS180 DIFFERENTIAL DRIVER AND RECEIVER PAIRS
SLLS052F - AUGUST 1987 - REVISED JUNE 2000
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Voltage range at any bus terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -10 V to 15 V Enable input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Package thermal impedance, JA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80C/W Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260C Storage temperature range, Tst . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65C to 150C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. All voltage values, except differential I/O bus voltage, are with respect to network ground terminal. 2. The package thermal impedance is calculated in accordance with JESD 51.
recommended operating conditions
MIN Supply voltage, VCC Voltage at any bus terminal (separately or common mode), VI or VIC mode) High-level input voltage, VIH Low-level input voltage, VIL Differential input voltage, VID (see Note 3) High-level High level output current, IOH current Low-level Low level output current IOL current, Operating free-air temperature, TA free air temperature Driver Receiver Driver Receiver SN65ALS180 SN75ALS180 -40 0 D, DE, and RE D, DE, and RE 2 0.8 12 -60 -400 60 8 85 70 4.75 NOM 5 MAX 5.25 12 -7 UNIT V V V V V mA A mA C
NOTE 3: Differential-input/output bus voltage is measured at the noninverting terminal, A/Y, with respect to the inverting terminal, B/Z.
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SN65ALS180, SN75ALS180 DIFFERENTIAL DRIVER AND RECEIVER PAIRS
SLLS052F - AUGUST 1987 - REVISED JUNE 2000
DRIVERS electrical characteristics over recommended ranges of supply voltage and operating free-air temperature range (unless otherwise noted)
PARAMETER VIK VO |VOD1| |VOD2| VOD3 |VOD| VOC |VOC| IO IIH IIL Input clamp voltage Output voltage Differential output voltage g Differential output voltage Differential output voltage Change in magnitude of differential output voltage Common-mode output voltage Change in magnitude of common-mode output voltage Output current High-level input current Low-level input current II = -18 mA IO = 0 IO = 0 RL = 100 , RL = 54 , Vtest = -7 V to 12 V, RL = 54 or 100 , RL = 54 or 100 , RL = 54 or 100 , Output disabled (see Note 4) VI = 2.4 V VI = 0.4 V VO = -6 V VO = -4 V IOS Short-circuit output current# VO = 0 VO = VCC VO = 8 V ICC y Supply current No load SN75ALS180 SN65ALS180 All All All Driver outputs enabled, Receiver disabled Outputs disabled 25 19 See Figure 1 See Figure 1 See Figure 2 See Figure 1 See Figure 1 See Figure 1 VO = 12 V VO = -7 V TEST CONDITIONS MIN 0 1.5 1/2 VOD1 or 2 1.5 1.5 2.5 5 5 0.2 3 -1 0.2 1 -0.8 20 -400 -250 -250 -150 250 250 30 26 mA mA V V V V mA A A TYP MAX -1.5 6 6 UNIT V V V V
The power-off measurement in TIA/EIA-422-B applies to disabled outputs only and is not applied to combined inputs and outputs. All typical values are at VCC = 5 V, TA = 25C. The minimum VOD2 with 100- load is either 1/2 VOD2 or 2 V, whichever is greater. |VOD| and |VOC| are the changes in magnitude of VOD and VOC, respectively, that occur when the input is changed from a high level to a low level. # Duration of the short circuit should not exceed one second for this test. NOTE 4: This applies for both power on and off; refer to TIA/EIA-485-A for exact conditions. The TIA/EIA-422-B limit does not apply for a combined driver and receiver terminal.
switching characteristics over recommended ranges of supply voltage and operating free-air temperature
PARAMETER td(OD) tt(OD) tPZH tPZL tPHZ Differential output delay time Pulse skew (td(ODH) - td(ODL)) Differential output transition time Output enable time to high level Output enable time to low level Output disable time from high level RL = 54 , RL = 54 , RL = 54 , RL = 110 , RL = 110 , RL = 110 , RL = 110 , TEST CONDITIONS CL = 50 pF, CL = 50 pF, CL = 50 pF, See Figure 4 See Figure 5 See Figure 4 See Figure 5 See Figure 3 See Figure 3 See Figure 3 3 MIN 3 TYP 8 1 8 23 19 8 8 MAX 13 6 13 50 24 13 13 UNIT ns ns ns ns ns ns ns
tPLZ Output disable time from low level All typical values are at VCC = 5 V and TA = 25C.
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SN65ALS180, SN75ALS180 DIFFERENTIAL DRIVER AND RECEIVER PAIRS
SLLS052F - AUGUST 1987 - REVISED JUNE 2000
SYMBOL EQUIVALENTS DATA-SHEET PARAMETER VO |VOD1| |VOD2| |VOD3| Vtest |VOD| VOC |VOC| IOS IO TIA/EIA-422-B Voa, Vob Vo Vt (RL = 100 ) TIA/EIA-485-A Voa, Vob Vo Vt (RL = 54 ) Vt (test termination measurement 2) Vtst ||Vt| - |Vt|| |Vos| |Vos - Vos| Iia, Iib
||Vt| - |Vt|| |Vos| |Vos - Vos| |Isa|, |Isb| |Ixa|, |Ixb|
RECEIVERS electrical characteristics over recommended ranges of common-mode input voltage, supply voltage, and operating free-air temperature (unless otherwise noted)
PARAMETER VIT+ VIT- Vhys VIK VOH VOL IOZ II IIH IIL ri IOS ICC Positive-going input threshold voltage Negative-going input threshold voltage Hysteresis voltage (VIT+ - VIT-) Enable-input clamp voltage High-level output voltage Low-level output voltage High-impedance-state output current Line input current High-level enable-input current Low-level enable-input current Input resistance Short-circuit output current y Supply current VID = 200 mV, No load VO = 0 Receiver outputs enabled, Driver inputs disabled Outputs disabled II = -18 mA VID = 200 mV, VID = -200 mV, VO = 0.4 V to 2.4 V Other input = 0 V (see Note 5) VIH = 2.7 V VIL = 0.4 V 12 -15 19 19 -85 30 26 IOH = -400 A, IOL = 8 mA, VI = 12 V VI = -7 V See Figure 6 See Figure 6 2.7 0.45 20 1 -0.8 20 -100 VO = 2.7 V, VO = 0.5 V, TEST CONDITIONS IO = -0.4 mA IO = 8 mA -0.2 60 -1.5 MIN TYP MAX 0.2 UNIT V V mV V V V A mA A A k mA mA
All typical values are at VCC = 5 V, TA = 25C. The algebraic convention, in which the less positive (more negative) limit is designated minimum, is used in this data sheet for common-mode input voltage and threshold voltage levels only. NOTE 5: This applies for both power on and power off. Refer to TIA/EIA-485-A for exact conditions.
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SN65ALS180, SN75ALS180 DIFFERENTIAL DRIVER AND RECEIVER PAIRS
SLLS052F - AUGUST 1987 - REVISED JUNE 2000
switching characteristics over recommended ranges of supply voltage and operating free-air temperature
PARAMETER tPLH tPHL Propagation delay time, low- to high-level output Propagation delay time, high- to low-level output Skew (|tPHL - tPLH|) tPZH tPZL tPHZ tPLZ Output enable time to high level Output enable time to low level Output disable time from high level Output disable time from low level TEST CONDITIONS VID = -1.5 V to 1.5 V, See Figure 7 VID = -1.5 V to 1.5 V, See Figure 7 VID = -1.5 V to 1.5 V, See Figure 7 CL = 15 pF, CL = 15 pF, CL = 15 pF, CL = 15 pF, CL = 15 pF, CL = 15 pF, CL = 15 pF, See Figure 8 See Figure 8 See Figure 8 See Figure 8 MIN 9 9 TYP 14 14 2 7 7 20 8 MAX 19 19 6 14 14 35 17 UNIT ns ns ns ns ns ns ns
All typical values are at VCC = 5 V, TA = 25C.
PARAMETER MEASUREMENT INFORMATION
RL 2 VOD2 RL 2 VOC
Figure 1. Driver VOD and VOC
375
VOD3
60 375 Vtest
Figure 2. Driver VOD3
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SN65ALS180, SN75ALS180 DIFFERENTIAL DRIVER AND RECEIVER PAIRS
SLLS052F - AUGUST 1987 - REVISED JUNE 2000
PARAMETER MEASUREMENT INFORMATION
3V Input CL = 50 pF (see Note A) Generator (see Note B) 50 3V TEST CIRCUIT RL = 54 Output Output td(ODH) 50% 10% tt(OD) 90% 1.5 V 1.5 V 0V td(ODL) 2.5 V 50% 10% -2.5 V tt(OD)
VOLTAGE WAVEFORMS
NOTES: A. CL includes probe and jig capacitance. B. The input pulse is supplied by a generator having the following characteristics: PRR 1 MHz, 50% duty cycle, tr 6 ns, tf 6 ns, ZO = 50 .
Figure 3. Driver Test Circuit and Voltage Waveforms
Output S1 0 V or 3 V CL = 50 pF (see Note A) 50 RL = 110 Output Input 1.5 V tPZH 1.5 V
3V 0V 0.5 V VOH 2.3 V tPHZ Voff 0 V
Generator (see Note B)
TEST CIRCUIT
VOLTAGE WAVEFORMS
NOTES: A. CL includes probe and jig capacitance. B. The input pulse is supplied by a generator having the following characteristics: PRR 1 MHz, 50% duty cycle, tr 6 ns, tf 6 ns, ZO = 50 .
Figure 4. Driver Test Circuit and Voltage Waveforms
5V RL = 110 3V S1 0 V or 3 V CL = 50 pF (see Note A) Generator (see Note B) 50 Output 2.3 V Output Input 1.5 V 1.5 V 0V tPZL tPLZ 5V 0.5 V VOL TEST CIRCUIT VOLTAGE WAVEFORMS
NOTES: A. CL includes probe and jig capacitance. B. The input pulse is supplied by a generator having the following characteristics: PRR 1 MHz, 50% duty cycle, tr 6 ns, tf 6 ns, ZO = 50 .
Figure 5. Driver Test Circuit and Voltage Waveforms
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SN65ALS180, SN75ALS180 DIFFERENTIAL DRIVER AND RECEIVER PAIRS
SLLS052F - AUGUST 1987 - REVISED JUNE 2000
PARAMETER MEASUREMENT INFORMATION
VID VOH +IOL VOL -IOH
Figure 6. Receiver VOH and VOL
3V Input 1.5 V 1.5 V 0V Generator (see Note B) Output 51 1.5 V 0V TEST CIRCUIT VOLTAGE WAVEFORMS CL = 15 pF (see Note A) tPLH tPHL VOH Output 1.3 V 1.3 V VOL
NOTES: A. CL includes probe and jig capacitance. B. The input pulse is supplied by a generator having the following characteristics: PRR 1 MHz, 50% duty cycle, tr 6 ns, tf 6 ns, ZO = 50 .
Figure 7. Receiver Test Circuit and Voltage Waveforms
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SN65ALS180, SN75ALS180 DIFFERENTIAL DRIVER AND RECEIVER PAIRS
SLLS052F - AUGUST 1987 - REVISED JUNE 2000
PARAMETER MEASUREMENT INFORMATION
S1 2 k
1.5 V - 1.5 V
S2 5V
CL = 15 pF (see Note A) Generator (see Note B) 50
5 k
1N916 or Equivalent
S3
TEST CIRCUIT 3V Input 1.5 V 0V tPZH VOH Output 1.5 V 0V 3V Input 1.5 V tPHZ Output 0.5 V 0V VOH Output tPLZ 0.5 V VOL 3V Input 1.5 V 0V Output 1.5 V VOL tPZL S1 to 1.5 V S2 Open S3 Closed Input
3V 1.5 V 0V
S1 to -1.5 V S2 Closed S3 Open
4.5 V
S1 to 1.5 V S2 Closed S3 Closed
S1 to -1.5 V S2 Closed S3 Closed
1.3 V
1.3 V
VOLTAGE WAVEFORMS
NOTES: A. CL includes probe and jig capacitance. B. The input pulse is supplied by a generator having the following characteristics: PRR 1 MHz, 50% duty cycle, tr 6 ns, tf 6 ns, ZO = 50 .
Figure 8. Receiver Test Circuit and Voltage Waveforms
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SN65ALS180, SN75ALS180 DIFFERENTIAL DRIVER AND RECEIVER PAIRS
SLLS052F - AUGUST 1987 - REVISED JUNE 2000
TYPICAL CHARACTERISTICS - DRIVERS
HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT
5 4.5 VOH - High-Level Output Voltage - V VOL - Low-Level Output Voltage - V 4 3.5 3 2.5 2 1.5 1 0.5 0 0 -20 -40 -60 -80 -100 -120 IOH - High-Level Output Current - mA VCC = 5 V TA = 25C 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 0 20 40 60 80 100 120 IOL - Low-Level Output Current - mA VCC = 5 V TA = 25C
LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT
Figure 9
Figure 10
DIFFERENTIAL OUTPUT VOLTAGE vs OUTPUT CURRENT
4 3.5 3 2.5 2 1.5 1 0.5 0 VCC = 5 V TA = 25C 0 10 20 30 40 50 60 70 80 90 100
VOD - Differential Output Voltage - V
IO - Output Current - mA
Figure 11
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SN65ALS180, SN75ALS180 DIFFERENTIAL DRIVER AND RECEIVER PAIRS
SLLS052F - AUGUST 1987 - REVISED JUNE 2000
TYPICAL CHARACTERISTICS - RECEIVERS
HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT
5 VOH - High-Level Output Voltage - V VID = 0.2 V TA = 25C VOH - High-Level Output Voltage - V 4 4 5 VCC = 5 V VID = 200 mV IOH = -440 A
HIGH-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE
3 VCC = 5.25 V 2 VCC = 5 V
3
2
1
VCC = 4.75 V
1
0 0 -10 -20 -30 -40 -50 IOH - High-Level Output Current - mA
0 -40
-20
0
20
40
60
80
100
120
TA - Free-Air Temperature - C
Figure 12
Figure 13
LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT
0.6 VCC = 5 V TA = 25C VID = -200 mV 0.6
LOW-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE
VCC = 5 V VID = -200 mA IOL = 8 mA
VOL - Low-Level Output Voltage - V
0.5
VOL - Low-Level Output Voltage - V 15 20 25 30
0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1
0.1
0 0 5 10 IOL - Low-Level Output Current - mA
0 -40
-20
0
20
40
60
80
100
120
TA - Free-Air Temperature - C
Figure 14
Figure 15
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SN65ALS180, SN75ALS180 DIFFERENTIAL DRIVER AND RECEIVER PAIRS
SLLS052F - AUGUST 1987 - REVISED JUNE 2000
TYPICAL CHARACTERISTICS - RECEIVERS
OUTPUT VOLTAGE vs ENABLE VOLTAGE
5 VID = 0.2 V Load = 8 k to GND TA = 25C VCC = 5.25 V VO - Output Voltage - V 6 VID = 0.2 V Load = 1 k to VCC TA = 25C VCC = 5.25 V
OUTPUT VOLTAGE vs ENABLE VOLTAGE
4 VO - Output Voltage - V
5
VCC = 4.75 V 4 VCC = 5 V
3
VCC = 4.75 V VCC = 5 V
3
2
2
1
1
0 0 0.5 1 1.5 2 2.5 3 VI - Enable Voltage - V
0 0 0.5 1 1.5 2 2.5 3 VI - Enable Voltage - V
Figure 16
Figure 17
APPLICATION INFORMATION
SN65ALS180 SN75ALS180 RT RT SN65ALS180 SN75ALS180
Up to 32 Transceivers
NOTE A: The line should terminate at both ends in its characteristic impedance (RT = ZO). Stub lengths off the main line should be kept as short as possible.
Figure 18. Typical Application Circuit
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IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. Customers are responsible for their applications using TI components. In order to minimize risks associated with the customer's applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI's publication of information regarding any third party's products or services does not constitute TI's approval, warranty or endorsement thereof.
Copyright (c) 2000, Texas Instruments Incorporated

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