THVD1520 is a robust half-duplex RS-485 transceiver for industrial applications. The bus pins are immune to high levels of IEC contact discharge ESD events eliminating the need of additional system-level protection components.
The device operates from a single 5-V supply. The wide common-mode voltage range and low input leakage on bus pins make THVD1520 suitable for multi-point applications over long cable runs.
THVD1520 is available in industry standard 8-pin SOIC package for drop-in compatibility. The device is characterized for ambient temperatures from –40°C to 125°C.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
THVD1520 | SOIC (8) | 4.90 mm × 3.91 mm |
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DATE | REVISION | NOTES |
---|---|---|
October 2019 | * | Initial release. |
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
R | 1 | Digital output | Receive data output |
RE | 2 | Digital input | Receiver enable, active low (internal 5-MΩ pull-up) |
DE | 3 | Digital input | Driver enable, active high (internal 5-MΩ pull-down) |
D | 4 | Digital input | Driver data input (internal 5-MΩ pull-up) |
GND | 5 | Ground | Device ground |
A | 6 | Bus input/output | Bus I/O port, A (complementary to B) |
B | 7 | Bus input/output | Bus I/O port, B (complementary to A) |
VCC | 8 | Power | 5-V supply |
MIN | MAX | UNIT | |||
---|---|---|---|---|---|
VCC | Supply voltage | –0.5 | 7 | V | |
VL | Input voltage at any logic pin (D, DE or RE) | –0.3 | 5.7 | V | |
VA, VB | Voltage at A or B inputs, as differential or common-mode with respect to GND | –18 | 18 | V | |
IO | Receiver output current | –24 | 24 | mA | |
TJ | Junction temperature | 170 | °C | ||
TSTG | Storage temperature | –65 | 150 | °C |
VALUE | UNIT | ||||
---|---|---|---|---|---|
V(ESD) | Electrostatic discharge | Human body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) | Bus terminals and GND | ±16,000 | V |
All other pins | ±4,000 | V | |||
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) | ±1,500 |
VALUE | UNIT | |||
---|---|---|---|---|
V(ESD) | Electrostatic discharge | IEC 61000-4-2 ESD (Contact Discharge), bus terminals and GND | ±8,000 | V |
IEC 61000-4-2 ESD (Air-Gap Discharge), bus terminals and GND | ±8,000 | |||
IEC 61000-4-4 EFT (Fast transient or burst), bus terminals and GND | ±4,000 |
MIN | NOM | MAX | UNIT | |||
---|---|---|---|---|---|---|
VCC | Supply voltage | 4.5 | 5 | 5.5 | V | |
VID | Differential input voltage | –12 | 12 | V | ||
VI | Input voltage at any bus terminal(1) | –7 | 12 | V | ||
VIH | High-level input voltage (driver, driver-enable, and receiver-enable inputs) | 2 | VCC | V | ||
VIL | Low-level input voltage (driver, driver-enable, and receiver-enable inputs) | 0 | 0.8 | V | ||
IO | Output current | Driver | –60 | 60 | mA | |
Receiver | –8 | 8 | ||||
RL | Differential load resistance | 54 | 60 | Ω | ||
1/tUI | Signaling rate | 10 | Mbps | |||
TJ | Junction temperature | –40 | 150 | °C | ||
TA(2) | Operating ambient temperature | –40 | 125 | °C |
THERMAL METRIC(1) | THVD1520 | UNIT | |
---|---|---|---|
D (SOIC) | |||
8 PINS | |||
RθJA | Junction-to-ambient thermal resistance | 125.3 | °C/W |
RθJC(top) | Junction-to-case (top) thermal resistance | 67.6 | °C/W |
RθJB | Junction-to-board thermal resistance | 68.6 | °C/W |
ψJT | Junction-to-top characterization parameter | 20.4 | °C/W |
ψJB | Junction-to-board characterization parameter | 67.8 | °C/W |
PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT | ||
---|---|---|---|---|---|---|---|
Driver | |||||||
│VOD│ | Driver differential-output voltage magnitude | Vtest from –7 to +12 V | See Figure 7 | 1.5 | 2.5 | V | |
RL = 54 Ω (RS-485), CL = 50 pF | See Figure 8 | 1.5 | 2.5 | ||||
RL = 100 Ω (RS-422), CL = 50 pF | 2 | 3 | |||||
Δ│VOD│ | Change in magnitude of driver differential-output voltage | RL = 54 Ω or 100 Ω, CL = 50 pF | See Figure 8 | –50 | 50 | mV | |
VOC(SS) | Steady-state common-mode output voltage | RL = 54 Ω or 100 Ω, CL = 50 pF | See Figure 8 | 1 | VCC / 2 | 3 | V |
ΔVOC | Change in differential driver common-mode output voltage | –50 | 50 | mV | |||
VOC(PP) | Peak-to-peak driver common-mode output voltage | 220 | mV | ||||
│IOS│ | Driver short-circuit output current | DE = VCC, -7 V ≤ [VA or VB] ≤ 12 V, or A pin shorted to B pin | 150 | mA | |||
COD | Differential output capacitance | 8 | pF | ||||
Receiver | |||||||
II | Bus input current (driver disabled) | DE = 0 V, VCC = 0 V or 5.5 V | VI = 12 V | 75 | 110 | µA | |
VI = –7 V | –90 | –70 | |||||
RA, RB | Bus input impedance | VA = -7 V, VB = 12 V and VA = 12 V, VB = -7 V | See Figure 12 | 96 | kΩ | ||
VIT+ | Positive-going receiver differential-input voltage threshold | –90 | –50 | mV | |||
VIT– | Negative-going receiver differential-input voltage threshold | –200 | –150 | mV | |||
VHYS(1) | Receiver differential-input voltage threshold hysteresis (VIT+ – VIT– ) | 40 | 60 | mV | |||
VOH | Receiver high-level output voltage | IOH = –8 mA | 4 | VCC – 0.3 | V | ||
VOL | Receiver low-level output voltage | IOL = 8 mA | 0.2 | 0.4 | V | ||
IOZ | Receiver high-impedance output current | VO = 0 V or VCC, RE = VCC | –1 | 1 | µA | ||
IOSR | Receiver output short-circuit current | RE = 0, DE = 0 | See Figure 13 | 95 | mA | ||
Logic | |||||||
IIN | Input current (D, DE, RE) | –2.5 | 2.5 | µA | |||
Supply | |||||||
ICC | Supply current (quiescent) | Driver and receiver enabled | DE = VCC, RE = 0, no load | 600 | 840 | µA | |
Driver enabled, receiver disabled | DE = VCC, RE = VCC, no load | 440 | 580 | ||||
Driver disabled, receiver enabled | DE = 0, RE = 0, no load | 530 | 680 | ||||
Driver and receiver disabled | DE = 0, RE = VCC, no load | 0.1 | 1 |