HD3SS460 是一款高速双向无源开关,可采用复用或解复用两种配置。该器件可通过负载点 (POL) 控制引脚进行切换,从而适应连接器换向。该器件还可通过 AMSEL 控制引脚来实现双通道数据/双通道视频与所有四通道视频的复用。
该器件还针对低速引脚提供了交叉点 MUX,可满足可换向连接器实现的需求。
HD3SS460 是一款通用模拟差分无源开关,适用于所有高速接口 应用, 前提条件是该应用在 0V 至 2V 共模电压范围内发生偏置并且具有幅值高达 1800 mVpp 的差分信令。该器件采用自适应跟踪,可确保信道在整个共模电压范围内保持不变。
该器件具有出色的动态特性,可在信号眼图衰减最小的情况下实现高速转换,并且附加抖动极少。该器件在工作模式下的功耗 < 2mW,关断模式下的功耗 < 5µW(可通过 EN 引脚切换模式)。
器件型号 | 封装 | 封装尺寸(标称值) |
---|---|---|
HD3SS460 | QFN (RHR) (28) | 3.50mm x 5.50mm |
HD3SS460I | ||
HD3SS460 | QFN (RNH) (30) | 2.50mm x 4.50mm |
HD3SS460I |
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Changes from C Revision (December 2016) to D Revision
Changes from B Revision (June 2016) to C Revision
Changes from A Revision (March 2015) to B Revision
Changes from * Revision (January 2015) to A Revision
OPERATING TEMPERATURE (°C) | PART NUMBER | PINS | TOP-SIDE MARKING |
---|---|---|---|
0 to 70 | HD3SS460RHR | 28 | 3SS460 |
–40 to 85 | HD3SS460IRHR | 28 | 3SS460I |
0 to 70 | HD3SS460RNH | 30 | 460RNH |
–40 to 85 | HD3SS460IRNH | 30 | 460IRNH |
PIN | TYPE(1) | DESCRIPTION | ||
---|---|---|---|---|
NAME | RHR NO. |
RNH NO. |
||
VCC | 22 | 23 | P | Power |
GND | PAD | 13, 28, PAD | G | Ground |
POL | 3 | 3 | Input | Provides MUX control (Table 1) |
AMSEL | 8 | 8 | 3-Level Input | Provides MUX configurations (Table 1) |
EN | 17 | 18 | 3-Level Input | Enable signal; also provides MUX control (Table 1) |
CRX1p, n | 1, 2 | 1, 2 | I/O | High Speed Signal Port CRX1 positive, negative |
CTX1p, n | 4, 5 | 4, 5 | I/O | High Speed Signal Port CTX1 positive, negative |
CTX2p, n | 6, 7 | 6, 7 | I/O | High Speed Signal Port CTX2 positive, negative |
CRX2p, n | 9, 10 | 9, 10 | I/O | High Speed Signal Port CRX2 positive, negative |
LnAn, p | 15, 16 | 16, 17 | I/O | High Speed Signal Port LnA positive, negative |
LnBn, p | 18, 19 | 19, 20 | I/O | High Speed Signal Port LnB negative, positive |
LnCn, p | 20, 21 | 21, 22 | I/O | High Speed Signal Port LnC negative, positive |
LnDn, p | 23, 24 | 24, 25 | I/O | High Speed Signal Port LnD negative, positive |
SSTXn, p | 25, 26 | 26, 27 | I/O | High Speed Signal Port SSTX negative, positive |
SSRXn, p | 27, 28 | 29, 30 | I/O | High Speed Signal Port SSRX negative, positive |
CSBU1, 2 | 11, 12 | 11, 12 | I/O | Low Speed Signal Port CSBU 1, 2 |
SBU1, 2 | 13, 14 | 14, 15 | I/O | Low Speed Signal Port SBU 1, 2 |
VALUE | UNIT | |||
---|---|---|---|---|
V(ESD) | Electrostatic discharge | Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) | ±4000 | V |
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) | ±1000 | V |
THERMAL METRIC(1) | HD3SS460 | UNIT | ||
---|---|---|---|---|
QFN (RNH) | QFN (RHR) | |||
30 PINS | 28 PINS | |||
RθJA | Junction-to-ambient thermal resistance | 51.6 | 44.0 | °C/W |
RθJC(top) | Junction-to-case (top) thermal resistance | 37.5 | 34.8 | °C/W |
RθJB | Junction-to-board thermal resistance | 17.5 | 14.7 | °C/W |
ψJT | Junction-to-top characterization parameter | 0.7 | 0.7 | °C/W |
ψJB | Junction-to-board characterization parameter | 17.3 | 24.5 | °C/W |
RθJC(bot) | Junction-to-case (bottom) thermal resistance | 6.8 | 6.9 | °C/W |
PARAMETER | MIN | TYP | MAX | UNIT | ||
---|---|---|---|---|---|---|
RL | Differential return loss | 100 Mhz SS Paths | –23 | dB | ||
2.5 Ghz SS Paths | –9 | |||||
100 MHz AM Paths | –23 | |||||
2. 7GHz AM Paths | –13 | |||||
IL | Differential insertion loss | 100 Mhz SS Paths | –0.7 | |||
2.5 Ghz SS Paths | –1.6 | |||||
100 MHz AM Paths | –0.7 | |||||
2.7 GHz AM Paths | –1.4 | |||||
OI | Differential off isolation | 100 Mhz | –50 | |||
2.5 Ghz | –26 | |||||
2.7 GHz | –25 | |||||
Xtalk | Differential cross talk, Between CRX1/2 and CTX1/2 | 100 Mhz | –80 | |||
2.5 Ghz | –30 | |||||
2.7 Ghz | –28 | |||||
Differential cross talk, Between CRX1 and CRX2 or CTX1 and CTX2 | 100 Mhz | –50 | ||||
2.5 Ghz | –26 | |||||
2.7 Ghz | –25 | |||||
BWSS | Differential –3 dB BW SS Paths | 4.2 | GHz | |||
BWAM | Differential –3 dB BW AM Paths | 5.4 | ||||
BWSBU | Low-speed switch –3 dB BW | 500 | MHz |
PARAMETER | TEST CONDITION | MIN | TYP | MAX | UNIT | |
---|---|---|---|---|---|---|
tPD | Switch propagation delay | RSC and RLOAD = 50 Ω, Figure 2 | 100 | ps | ||
tSK(O) | Inter-Pair output skew (CH-CH) | 50 | ||||
tSK(b-b) | Intra-Pair output skew (bit-bit) | 5 | ||||
tON | Control signals POL, AMSEL and EN (H/M toggle) to switch ON time | RSC and RLOAD = 50 Ω, Figure 1 | 3 | µs | ||
tOFF | Control signals POL, AMSEL and EN (H/M toggle) to switch OFF time | 1 |
The HD3SS460 is a high-speed bi-directional passive 4-6 cross-point switch in mux or demux configurations. Based on control pin POL the device provides switching to accommodate USB Type-C plug flipping. The device provides multiple signal switching options that allow system implementation flexibility.
The HD3SS460 is a generic analog, differential passive switch that can work for any high speed interface applications as long as it is biased at a common mode voltage range of 0-2 V and has differential signaling with differential amplitude up to 1800 mVpp. It employs an adaptive tracking that ensures the channel remains unchanged for entire common mode voltage range
Excellent dynamic characteristics of the device allow high speed switching with minimum attenuation to the signal eye diagram with very little added jitter.
Based on control pin AMSEL the device provides muxing options of:
The device also provides cross point muxing for low speed SBU signals as needed in USB Type-C flippable connector implementation. The device provides the option to choose the USB only implementation where SBU ports are in tri-state.
The HD3SS460 has two power modes, active/normal operating mode and standby/shutdown mode. During standby mode, the device consumes very little current to save the maximum power. To enter standby mode, the EN control pin is pulled low and must remain low. For active/normal operation, the EN control pin should be pulled high to VDD through a resistor or dynamically controlled to switch between H or M.
HD3SS460 consumes <2 mW of power when operational and <5 µW in shutdown mode, exercisable by the EN pin.
POL | AMSEL | EN | CONFIGURATIONS | HIGH SPEED SIGNAL FLOW(1) | SBU SIGNAL FLOW |
---|---|---|---|---|---|
L | L | H | 2CH USBSS + 2CH AM (Normal) |
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H | L | H | 2CH USBSS + 2CH AM (Flipped) |
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L | H | H | 4CH AM (Normal) |
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H | H | H | 4CH AM (Flipped) |
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L | M | H | 2CH USBSS (Normal) |
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All Low Speed SBU Ports HighZ |
H | M | H | 2CH USBSS (Flipped) |
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All Low Speed SBU Ports HighZ |
L | M | M | 2CH USBSS + 2CH AM (Normal) |
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H | M | M | 2CH USBSS + 2CH AM (Flipped) |
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L | L | M | 2CH USBSS + 2CH AM from alternate GPU (Normal) |
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H | L | M | 2CH USBSS + 2CH AM from alternate GPU (Flipped) |
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L | H | M | Reserved | Reserved | Reserved |
H | H | M | Reserved | Reserved | Reserved |
X | X | L | All High Speed Ports HighZ | All High Speed Ports HighZ | All Low Speed SBU Ports HighZ |
NOTE
Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality.
HD3SS460 can be utilized for a wide range of muxing needs. This is general purpose passive cross-point switch. The channels have independent adaptive common mode tracking allowing flexibility. As long as recommended electrical use conditions are met the device can be used number of ways as described in Table 1.
NOTE
HD3SS460 does not provide common mode biasing for the channel. Therefore it is required that the device is biased from either side for all active channels.
HD3SS460 can be used USB Type-C ecosystem with DP as alternate mode in two distinct application configurations – one is for DP Source/USB Host, the other one for the DP Sink/USB Device/Dock. Figure 3 and Figure 4 illustrate typical application block diagrams for these two cases. Detail schematics are illustrated in Detailed Design Procedure section. Other applications and or use cases possible where these examples can be used as general guidelines.
Figure 3 and Figure 4 depict the AC coupling capacitor placement examples. TI recommends placing the capacitors as shown in the illustrations for the backward compatibility and interoperability purposes as some of the existing USB systems may present Vcm, exceeding the typical range of 0–2 V on SS differential pairs.
Figure 5 and Figure 6 depict the AC coupling capacitor recommendations in case the upstream or downstream port connected internally to the HD3SS460 presents Vcm greater than 2 V.
DESIGN PARAMETERS | EXAMPLE VALUES | |||
---|---|---|---|---|
VCC | 3.3 V | |||
Decoupling capacitors | 0.1 µF | |||
AC Capacitors | 75-200nF (100nF shown) USBSS TX p and n lines require AC capacotprs. Alternate mode signals may or may not require AC capacitors | |||
Control pins | Controls pins can be dynamically controlled or pin-strapped. The POL signal is controlled by CC logic in the Type-C ecosystem. |
The reference schematics shown in this document are based upon the pin assignment defined in the Alternate mode over Type C specification as shown in Figure 7 below.
Table 2 represents the example pin mapping to HD3SS460 for the DP Source pin assignments C, D, E and F, DP Sink pin assignments C and D.
RECEPTACLE PIN NUMBER | 460 PIN MAPPING TO TYPE C CONNECTOR | 460 PIN MAPPING TO DP SOURCE (GPU) | |
---|---|---|---|
POL = L | POL = H | ||
A11/10 | CRX2 | LnA(ML0) | LnD(ML3) |
A2/3 | CTX1 | LnC(ML2) | LnB(ML1) |
B11/10 | CRX1 | LnD(ML3) | LnA(ML0) |
B2/3 | CTX2 | LnB(ML1) | LnC(ML2) |
A8 | CSBU1 | SBU1(AUXP) | SBU2(AUXN) |
B8 | CSBU2 | SBU2(AUXN) | SBU1(AUXP) |
RECEPTACLE PIN NUMBER | 460 PIN MAPPING TO TYPE C CONNECTOR | 460 PIN MAPPING TO DP SOURCE (GPU) | |
---|---|---|---|
POL = L | POL = H | ||
A11/10 | CRX2 | LnA(ML0) | SSRX |
A2/3 | CTX1 | SSTX | LnB(ML1) |
B11/10 | CRX1 | SSRX | LnA(ML0) |
B2/3 | CTX2 | LnB(ML1) | SSTX |
A8 | CSBU1 | SBU1(AUXP) | SBU2(AUXN) |
B8 | CSBU2 | SBU2(AUXN) | SBU1(AUXP) |
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RECEPTACLE PIN NUMBER | 460 PIN MAPPING TO TYPE C CONNECTOR | 460 PIN MAPPING TO DP SOURCE (GPU) | |
---|---|---|---|
POL = L | POL = H | ||
A11/10 | CRX2 | LnA(ML1) | LnD(ML2) |
A2/3 | CTX1 | LnC(ML3) | LnB(ML0) |
B11/10 | CRX1 | LnD(ML2) | LnA(ML1) |
B2/3 | CTX2 | LnB(ML0) | LnC(ML3) |
A8 | CSBU1 | SBU1(AUXN) | SBU2(AUXP) |
B8 | CSBU2 | SBU2(AUXP) | SBU1(AUXN) |
RECEPTACLE PIN NUMBER | 460 PIN MAPPING TO TYPE C CONNECTOR | 460 PIN MAPPING TO DP SOURCE (GPU) | |
---|---|---|---|
POL = L | POL = H | ||
A11/10 | CRX2 | LnA(ML1) | SSRX |
A2/3 | CTX1 | SSTX | LnB(ML0) |
B11/10 | CRX1 | SSRX | LnA(ML1) |
B2/3 | CTX2 | LnB(ML0) | SSTX |
A8 | CSBU1 | SBU1(AUXN) | SBU2(AUXP) |
B8 | CSBU2 | SBU2(AUXP) | SBU1(AUXN) |
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Schematic diagrams Figure 14, Figure 15, and Figure 16 show the DP Source/USB Host implementation; and, Figure 17, Figure 18, and Figure 19 show the DP Sink/USB Device/HUSB Hub/Dock implementation, respectively.