SN74AVCBH164245VR

SN74AVCBH164245 16-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES393B – JUNE 2002 – REVISED MARCH 2008 FEATURES 1 • Member of the Texas Instruments Widebus™ Family • Dynamic Output Control (DOC™) Circuitry Dynamically Changes Output Impedance, Resulting in Noise Reduction Without Speed Degradation • Dynamic Drive Capability Is Equivalent to Standard Outputs With IOH and IOL of ±24 mA at 2.5-V VCC • Control Inputs VIH/VIL Levels are Referenced to VCCB Voltage • If Either VCC Input Is at GND, Both Ports Are in the High-Impedance State • Overvoltage-Tolerant Inputs/Outputs Allow Mixed-Voltage-Mode Data Communications 2 • • • • • Ioff Supports Partial-Power-Down Mode Operation Fully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.4-V to 3.6-V Power-Supply Range Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) DESCRIPTION/ORDERING INFORMATION This 16-bit (dual-octal) noninverting bus transceiver uses two separate configurable power-supply rails. The A-port is designed to track VCCA. VCCA accepts any supply voltage from 1.4 V to 3.6 V. The B-port is designed to track VCCB. VCCB accepts any supply voltage from 1.4 V to 3.6 V. This allows for universal low-voltage bidirectional translation between any of the 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes. The SN74AVCBH164245 is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the outputs so the buses are effectively isolated. The SN74AVCBH164245 is designed so that the control pins (1DIR, 2DIR, 1OE, and 2OE) are supplied by VCCB. Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. To ensure the high-impedance state during power up or power down, OE should be tied to VCCB through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. If either VCC input is at GND, both ports are in the high-impedance state. ORDERING INFORMATION PACKAGE (1) (2) TA –40°C to 85°C (1) (2) ORDERABLE PART NUMBER TOP-SIDE MARKING TSSOP – DGG Tape and reel SN74AVCBH164245GR AVCBH164245 TVSOP – DGV Tape and reel SN74AVCBH164245VR WBH4245 VFBGA – GQL Tape and reel SN74AVCBH164245KR WBH4245 VFBGA – ZQL (Pb-free) Tape and reel SN74AVCBH164245ZQLR WBH4245 Package drawings, thermal data, and symbolization are available at www.ti.com/packaging. For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com. 1 2 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. Widebus, DOC are trademarks of Texas Instruments. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2002–2008, Texas Instruments Incorporated SN74AVCBH164245 16-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES393B – JUNE 2002 – REVISED MARCH 2008 TERMINAL ASSIGNMENTS DGG OR DGV PACKAGE (TOP VIEW) 1DIR 1B1 1B2 GND 1B3 1B4 VCCB 1 48 2 47 3 46 4 45 5 44 6 43 7 42 1B5 1B6 GND 1B7 1B8 2B1 2B2 GND 2B3 2B4 VCCB 8 41 9 40 10 39 11 38 12 37 13 36 14 35 15 34 16 33 17 32 18 31 2B5 2B6 GND 2B7 2B8 2DIR 19 30 20 29 21 28 22 27 23 26 24 25 1OE 1A1 1A2 GND 1A3 1A4 VCCA 1BA5 1A6 GND 1A7 1A8 2A1 2A2 GND 2A3 2A4 VCCA 2A5 2A6 GND 2A7 2A8 2OE GQL/ZQL PACKAGE (TOP VIEW) 1 2 3 4 5 TERMINAL ASSIGNMENTS (56-Ball GQL/ZQL Package) (1) 6 1 2 3 4 5 6 A 1DIR NC NC NC NC 1OE A B 1B2 1B1 GND GND 1A1 1A2 B C 1B4 1B3 VCCB VCCA 1A3 1A4 C D 1B6 1B5 GND GND 1A5 1A6 D E 1B8 1B7 1A7 1A8 E F 2B1 2B2 2A2 2A1 F G 2B3 2B4 GND GND 2A4 2A3 H 2B5 2B6 VCCB VCCA 2A6 2A5 J 2B7 2B8 GND GND 2A8 2A7 K 2DIR NC NC NC NC 2OE G H J K (1) 2 Submit Documentation Feedback NC - No internal connection Copyright © 2002–2008, Texas Instruments Incorporated Product Folder Link(s): SN74AVCBH164245 SN74AVCBH164245 16-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES393B – JUNE 2002 – REVISED MARCH 2008 FUNCTION TABLE (EACH 8-BIT SECTION) INPUTS OE OPERATION DIR L L B data to A bus L H A data to B bus H X Isolation LOGIC DIAGRAM (POSITIVE LOGIC) 1 2DIR 1DIR 24 25 48 1OE 1A1 47 2A1 2 2OE 36 13 1B1 To Seven Other Channels 2B1 To Seven Other Channels ABSOLUTE MAXIMUM RATINGS (1) over operating free-air temperature range (unless otherwise noted) MIN MAX –0.5 4.6 I/O ports (A port) –0.5 4.6 I/O ports (B port) –0.5 4.6 Control inputs –0.5 4.6 A port –0.5 4.6 B port –0.5 4.6 A port –0.5 VCCA + 0.5 B port –0.5 VCCB + 0.5 UNIT VCCA VCCB Supply voltage range VI Input voltage range (2) VO Voltage range applied to any output in the high-impedance or power-off state (2) VO Voltage range applied to any output in the high or low state (2) (3) IIK Input clamp current VI < 0 –50 mA IOK Output clamp current VO < 0 –50 mA IO Continuous output current ±50 mA ±100 mA Continuous current through VCCA, VCCB, or GND θJA Tstg (1) (2) (3) (4) Package thermal impedance (4) DGG package 70 DGV package 58 GQL/ZQL package 28 Storage temperature range –65 150 V V V V °C/W °C 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. The input and output negative-voltage ratings may be exceeded if the input and output current ratings are observed. The output positive-voltage rating may be exceeded up to 4.6 V maximum if the output current rating is observed. The package thermal impedance is calculated in accordance with JESD 51-7. Copyright © 2002–2008, Texas Instruments Incorporated Product Folder Link(s): SN74AVCBH164245 Submit Documentation Feedback 3 SN74AVCBH164245 16-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES393B – JUNE 2002 – REVISED MARCH 2008 RECOMMENDED OPERATING CONDITIONS (1) (2) (3) over operating free-air temperature range (unless otherwise noted) MIN MAX VCCA Supply voltage VCCI 1.4 3.6 V VCCB Supply voltage 1.4 3.6 V VIH High-level input voltage VIL Low-level input voltage VIH High-level input voltage VIL Low-level input voltage VI Input voltage VO Output voltage IOH Data inputs Data inputs Control inputs (referenced to VCCB) Control inputs (referenced to VCCB) 1.7 2.7 V to 3.6 V 2 1.4 V to 1.95 V VCCI × 0.35 1.95 V to 2.7 V 0.7 2.7 V to 3.6 V 0.8 1.4 V to 1.95 V VCCB × 0.65 1.95 V to 2.7 V 1.7 2.7 V to 3.6 V 2 1.4 V to 1.95 V VCCB × 0.35 1.95 V to 2.7 V 0.7 2.7 V to 3.6 V 0.8 0 VCCO 0 3.6 Input transition rise or fall rate Operating free-air temperature 1.4 V to 1.6 V –2 1.65 V to 1.95 V –4 2.3 V to 2.7 V –8 3 V to 3.6 V –12 1.4 V to 1.6 V 2 1.65 V to 1.95 V 4 2.3 V to 2.7 V 8 3 V to 3.6 V 12 –40 V V 3-state Low-level output current UNIT V Active state TA 4 VCCI × 0.65 1.95 V to 2.7 V 3.6 Δt/Δv (1) (2) (3) 1.4 V to 1.95 V 0 High-level output current IOL VCCO V V V mA mA 5 ns/V 85 °C VCCI is the VCC associated with the data input port. VCCO is the VCC associated with the data output port. All unused data inputs of the device must be held at VCCI or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. Submit Documentation Feedback Copyright © 2002–2008, Texas Instruments Incorporated Product Folder Link(s): SN74AVCBH164245 SN74AVCBH164245 16-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES393B – JUNE 2002 – REVISED MARCH 2008 ELECTRICAL CHARACTERISTICS (1) (2) over operating free-air temperature range (unless otherwise noted) PARAMETER VOH VOL II Control inputs IBHL (4) IBHH (5) TEST CONDITIONS Ioff B port 1.4 V to 3.6 V IOH = –2 mA VI = VIH 1.4 V 1.4 V IOH = –4 mA VI = VIH 1.65 V 1.65 V 1.2 IOH = –8 mA VI = VIH 2.3 V 2.3 V 1.75 IOH = –12 mA VI = VIH 3V 3V 2.3 IOH = 100 µA VI = VIL 1.4 V to 3.6 V 1.4 V to 3.6 V 0.2 IOH = 2 mA VI = VIL 1.4 V 1.4 V 0.35 IOH = 4 mA VI = VIL 1.65 V 1.65 V 0.45 IOH = 8 mA VI = VIL 2.3 V 2.3 V 0.55 IOH = 12 mA VI = VIL 3V 3V 0.7 1.4 V to 3.6 V 3.6 V ±2.5 VI = 0.49 V 1.4 V 1.4 V VI = 0.57 V 1.65 V 1.65 V 25 VI = 0.7 V 2.3 V 2.3 V 45 VI = 0.8 V 3V 3V 75 VI = VCCB or GND B port 1.4 V 1.4 V 1.65 V –25 VI = 0.7 V 2.3 V 2.3 V –45 OE = VIH VO = VCCO or GND, VI = VCCI or GND (1) (2) (3) (4) (5) (6) (7) (8) VI = VCCI or GND, OE = don't care IO = 0 V V µA 11 1.65 V A port ICCA 1.05 VI = 0.57 V VI or VO = 0 to 3.6 V UNIT VCCO – 0.2 VI = 0.49 V A or B ports IOZ (8) MAX 1.4 V to 3.6 V VI = 0 to VCC A port MIN TYP (3) VI = VIH VI = 0 to VCC IBHHO (7) VCCB IOH = –100 µA VI = 0.8 V IBHLO (6) VCCA µA –11 µA 3V 3V –75 1.6 V 1.6 V 100 1.95 V 1.95 V 200 2.7 V 2.7 V 300 3.6 V 3.6 V 525 1.6 V 1.6 V –100 1.95 V 1.95 V –200 2.7 V 2.7 V –300 3.6 V 3.6 V –525 0V 0 to 3.6 V ±10 0 to 3.6 V 0V ±10 3.6 V 3.6 V ±12.5 0V 3.6 V ±12.5 3.6 V 0V ±12.5 µA µA 1.6 V 1.6 V 20 1.95 V 1.95 V 20 2.7 V 2.7 V 30 0V 3.6 V –40 3.6 V 0V 40 3.6 V 3.6 V 40 µA µA µA VCCO is the VCC associated with the output port. VCCI is the VCC associated with the input port. All typical values are at TA = 25°C. The bus-hold circuit can sink at least the minimum low sustaining current at VIL max. IBHL should be measured after lowering VIN to GND and then raising it to VIL max. The bus-hold circuit can source at least the minimum high sustaining current at VIH min. IBHH should be measured after raising VIN to VCC and then lowering it to VIH min. An external driver must source at least IBHLO to switch this node from low to high. An external driver must sink at least IBHHO to switch this node from high to low. For I/O ports, the parameter IOZ includes the input leakage current. Copyright © 2002–2008, Texas Instruments Incorporated Product Folder Link(s): SN74AVCBH164245 Submit Documentation Feedback 5 SN74AVCBH164245 16-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES393B – JUNE 2002 – REVISED MARCH 2008 ELECTRICAL CHARACTERISTICS (continued) over operating free-air temperature range (unless otherwise noted) PARAMETER ICCB TEST CONDITIONS VI = VCCI or GND, IO = 0 MIN TYP (3) VCCA VCCB 1.6 V 1.6 V MAX 20 1.95 V 1.95 V 20 2.7 V 2.7 V 30 0V 3.6 V 40 3.6 V 0V –40 3.6 V 3.6 V 40 UNIT µA Ci Control inputs VI = 3.3 V or GND 3.3 V 3.3 V 4 pF Cio A or B ports VO = 3.3 V or GND 3.3 V 3.3 V 5 pF SWITCHING CHARACTERISTICS over recommended operating free-air temperature range, VCCA = 1.5 V ± 0.1 V (see Figure 2) PARAMETER tpd FROM (INPUT) TO (OUTPUT) A B ten OE tdis OE VCCB = 1.5 V ± 0.1 V VCCB = 1.8 V ± 0.15 V VCCB = 2.5 V ± 0.2 V VCCB = 3.3 V ± 0.3 V MIN MAX MIN MAX MIN MAX MIN MAX B 1.7 6.7 1.9 6.3 1.8 5.5 1.7 5.8 A 1.8 6.8 2.2 7.4 2.1 7.6 2.1 7.3 A 2.5 8.4 2.4 7.4 2.1 5.2 1.9 4.2 B 2.1 9 2.9 9.8 3.2 10 3 9.8 A 2.2 6.9 2.3 6.1 1.3 3.6 1.3 3 B 2.1 7.1 2.3 6.4 1.7 5.15.1 1.6 4.8 UNIT ns ns ns SWITCHING CHARACTERISTICS over recommended operating free-air temperature range, VCCA = 1.8 V ± 0.15 V (see Figure 2) PARAMETER tpd FROM (INPUT) TO (OUTPUT) A B ten OE tdis OE VCCB = 1.5 V ± 0.1 V VCCB = 1.8 V ± 0.15 V VCCB = 2.5 V ± 0.2 V VCCB = 3.3 V ± 0.3 V MIN MAX MIN MAX MIN MAX MIN MAX B 1.7 6.7 1.8 6 1.7 4.7 1.6 4.3 A 1.4 5.5 1.8 6 1.8 5.8 1.8 5.5 A 2.6 8.5 2.5 7.5 2.2 5.3 1.9 4.2 B 1.8 7.6 2.6 7.7 2.6 7.6 2.6 7.4 A 2.3 7 2.3 6.1 1.3 3.6 1.3 3 B 1.8 7 2.5 6.3 1.8 4.7 1.7 4.4 UNIT ns ns ns SWITCHING CHARACTERISTICS over recommended operating free-air temperature range, VCCA = 2.5 V ± 0.2 V (see Figure 2) PARAMETER tpd 6 FROM (INPUT) TO (OUTPUT) A B ten OE tdis OE Submit Documentation Feedback VCCB = 1.5 V ± 0.1 V VCCB = 1.8 V ± 0.15 V VCCB = 2.5 V ± 0.2 V VCCB = 3.3 V ± 0.3 V MIN MAX MIN MAX MIN MAX MIN MAX B 1.6 6 1.8 5.6 1.5 4 1.4 3.4 A 1.3 4.6 1.7 4.4 1.5 4 1.4 3.7 A 3.1 8.5 2.5 7.5 2.2 5.3 1.9 4.2 B 1.7 5.7 2.2 5.5 2.2 5.3 2.2 5.1 A 2.4 7 3 6.1 1.4 3.6 1.2 3 B 1.2 5.8 1.9 5 1.4 3.6 1.3 3.3 UNIT ns ns ns Copyright © 2002–2008, Texas Instruments Incorporated Product Folder Link(s): SN74AVCBH164245 SN74AVCBH164245 16-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES393B – JUNE 2002 – REVISED MARCH 2008 SWITCHING CHARACTERISTICS over recommended operating free-air temperature range, VCCA = 3.3 V ± 0.3 V (see Figure 2) PARAMETER tpd FROM (INPUT) TO (OUTPUT) A B ten OE tdis OE VCCB = 1.5 V ± 0.1 V VCCB = 1.8 V ± 0.15 V VCCB = 2.5 V ± 0.2 V VCCB = 3.3 V ± 0.3 V MIN MAX MIN MAX MIN MAX MIN MAX B 1.5 5.9 1.7 5.4 1.5 3.7 1.4 3.1 A 1.3 4.5 1.6 3.8 1.5 3.3 1.4 3.1 A 2.6 8.3 2.5 7.4 2.2 5.2 1.9 4.1 B 1.6 4.9 2 4.5 2 4.3 1.9 4.1 A 2.3 7 3 6 1.3 3.5 1.2 3.5 B 1.3 6.9 2.1 5.5 1.6 3.8 1.5 3.5 UNIT ns ns ns OPERATING CHARACTERISTICS VCCA and VCCB = 3.3 V, TA = 25°C PARAMETER CpdA (VCCA) CpdB (VCCB) TEST CONDITIONS TYP Power dissipation capacitance per transceiver, A-port input, B-port output Outputs enabled Power dissipation capacitance per transceiver, B-port input, A-port output Outputs enabled Outputs disabled 7 Power dissipation capacitance per transceiver, A-port input, B-port output Outputs enabled 20 Outputs disabled Outputs disabled Outputs enabled Power dissipation capacitance per transceiver, B-port input, A-port output UNIT 14 CL = 0, CL = 0, 7 f = 10 MHz pF 20 7 f = 10 MHz pF 14 Outputs disabled 7 Output Description The DOC™ circuitry is implemented, which, during the transition, initially lowers the output impedance to effectively drive the load and, subsequently, raises the impedance to reduce noise. Figure 1 shows typical VOL vs IOL and VOH vs IOH curves to illustrate the output impedance and drive capability of the circuit. At the beginning of the signal transition, the DOC circuit provides a maximum dynamic drive that is equivalent to a high-drive standard-output device. For more information, refer to the TI application reports, AVC Logic Family Technology and Applications, literature number SCEA006, and Dynamic Output Control (DOC™) Circuitry Technology and Applications, literature number SCEA009. 3.2 TA = 25°C Process = Nominal - Output Voltage - V 2.8 2.4 VCC = 3.3 V 2.0 1.6 VCC = 2.5 V 1.2 OH VCC = 1.8 V 0.8 V VOL - Output Voltage - V 2.8 2.4 2.0 1.6 1.2 0.8 0.4 0.4 0 17 34 51 68 85 102 119 IOL - Output Current - mA 136 153 170 TA = 25°C Process = Nominal VCC = 3.3 V VCC = 2.5 V VCC = 1.8 V -160 -144 -128 -112 -96 -80 -64 -48 IOH - Output Current - mA -32 -16 Figure 1. Typical Output Voltage vs Output Current Copyright © 2002–2008, Texas Instruments Incorporated Product Folder Link(s): SN74AVCBH164245 Submit Documentation Feedback 7 SN74AVCBH164245 16-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS www.ti.com SCES393B – JUNE 2002 – REVISED MARCH 2008 PARAMETER MEASUREMENT INFORMATION 2 × V CCO S1 RL From Output Under Test Open GND CL (see Note A) TEST S1 tpd tPLZ/tPZL tPHZ/tPZH Open 2 × V CCO GND RL tw LOAD CIRCUIT VCCI VCCI/2V Input VCCO 1.5 V ± 0.1 V 1.8 V ± 0.15 V 2.5 V ± 0.2 V 3.3 V ± 0.3 V CL 15 pF 30 pF 30 pF 30 pF VTP 0.1 V 0.15 V 0.15 V 0.3 V RL 2 kΩ 1 kΩ 500 Ω 500 Ω CCI/2 0V VOLTAGE WAVEFORMS PULSE DURATION VCCB Output Control (low-level enabling) VCCB/2 VCCB/2 0V tPZL Input VCCI VCCI/2V CCI/2 0V tPLH Output tPHL VOH /2 CCO VOL VCCO/2V VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES VCCO Output Waveform 1 S1 at 2 x VCCO (see Note B) tPLZ VCCO/2 tPZH Output Waveform 2 S1 at GND (see Note B) VOL + V TP VOL tPHZ VCCO/2 VOH - V TP VOH 0V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES Figure 2. Load Circuit and Voltage Waveforms 8 Submit Documentation Feedback Copyright © 2002–2008, Texas Instruments Incorporated Product Folder Link(s): SN74AVCBH164245 PACKAGE OPTION ADDENDUM www.ti.com 14-Oct-2022 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) Samples (4/5) (6) SN74AVCBH164245GR ACTIVE TSSOP DGG 48 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 AVCBH164245 Samples SN74AVCBH164245VR ACTIVE TVSOP DGV 48 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 WBH4245 Samples (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of