component
CS48505AM
Public Made by Adomby adom
Chipanalog , MSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownCS48505AM
Chipanalog · IC · MSOP-8
CS48505AM from Chipanalog, in a MSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | RO | output | Receiver data output; it is high-impedance when REB is high or open, and it is held at fail-safe high when the bus is open, shorted, or idle. |
| 2 | REB | input | Active-low receiver enable with an internal resistor pull-up; the receiver is enabled only when REB is logic low, and the output is high-impedance when REB is high or open. |
| 3 | DE | input | Active-high driver enable with an internal pull-down; A and B are high-impedance when DE is low or open, and the input logic high threshold is 2.0 V minimum with a low threshold of 0.8 V maximum. |
| 4 | DI | input | Driver data input with an internal pull-up to VCC; A goes high and B goes low when DI is high, and the input logic thresholds are 2.0 V minimum (high) and 0.8 V maximum (low). |
| 5 | GND | power_in | Ground reference for the device; all voltages are referenced to GND. |
| 6 | A | bidirectional | Non-inverting RS-485 bus input/output; bus voltage must stay within -7 V to 12 V in operation, with an absolute maximum range of -8 V to 13 V. |
| 7 | B | bidirectional | Inverting RS-485 bus input/output; bus voltage must stay within -7 V to 12 V in operation, with an absolute maximum range of -8 V to 13 V. |
| 8 | VCC | power_in | Supply pin rated 3.0 V to 5.5 V (absolute maximum 7 V); a 100 nF to 220 nF decoupling capacitor should be placed as close as possible to this pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Chipanalog |
| Package | MSOP-8 |
| Category | |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Differential output voltage (RL=60Ω, -7V≤Vtest≤12V) | /VOD/ | 1.5 | 3.6 | V | RL = 60Ω, -7V ≤ Vtest ≤ 12V, 见图 8-1 | 6 | |
| Differential output voltage (RL=60Ω, 4.5V≤VCC≤5.5V) | /VOD/ | 2.1 | 3.6 | V | RL = 60Ω，-7V ≤ Vtest ≤ 12V，4.5V ≤ VCC ≤ 5.5V，见图 8-1 | 6 | |
| Differential output voltage (RL=100Ω) | /VOD/ | 2 | 4.2 | V | RL = 100Ω，CL = 50pF，见图 8-2 | 6 | |
| Differential output voltage (RL=54Ω) | /VOD/ | 1.5 | 3.6 | V | RL = 54Ω，CL = 50pF，见图 8-2 | 6 | |
| Change in differential output voltage | Δ/VOD/ | -50 | 50 | mV | RL = 54Ω 或 100Ω，CL = 50pF，见图 8-2 | 6 | |
| Common-mode output voltage | VOC | 1 | 3 | V | RL = 54Ω 或 100Ω，CL = 50pF，见图 8-2 | 6 | |
| Steady-state common-mode output voltage change | ΔVOC(SS) | -50 | 50 | mV | 6 | ||
| Common-mode output voltage peak-to-peak change | VOC(PP) | 450 | mV | 6 | |||
| Driver short-circuit output current | /IOS/ | 100 | 150 | mA | DE = VCC，-7V ≤ VO ≤ 12V，或 A 和 B 短接 | 6 | |
| Bus input current (VI=12V) | II | 75 | 125 | μA | DE = 0V，VCC = 0V 或 5.5V，VI = 12V | 6 | |
| Bus input current (VI=-7V) | II | -100 | -40 | μA | DE = 0V，VCC = 0V 或 5.5V，VI = -7V | 6 | |
| Bus input impedance | RI | 96 | kΩ | VA = -7V，VB = 12V 或 VA = 12V，VB = -7V (see note 1) | 6 | ||
| Positive input threshold voltage | VTH+ | -110 | -50 | mV | 6 | ||
| Negative input threshold voltage | VTH- | -200 | -140 | mV | 6 | ||
| Input hysteresis voltage | VHYS | 30 | mV | 6 | |||
| Output low voltage | VOL | 0.2 | 0.4 | V | IOL = 4mA | 6 | |
| High-impedance output current | IOZR | -1 | 1 | μA | REB = VCC，VO = 0V 或 VCC | 6 | |
| Receiver short-circuit output current | IOSR | 95 | mA | REB = DE = 0V，见图 8-3 | 6 | ||
| Input current (DI, DE, REB) | IIN | -5 | 5 | μA | 0V ≤ VIN ≤ VCC | 6 | |
| Quiescent supply current (driver and receiver enabled) | ICC | 900 | 1400 | μA | 驱动器和接收机使能，REB = 0V，DE = VCC，空载 | 6 | |
| Quiescent supply current (driver enabled, receiver disabled) | ICC | 550 | 900 | μA | 驱动器使能，接收机关闭，REB = VCC，DE = VCC，空载 | 6 | |
| Quiescent supply current (driver disabled, receiver enabled) | ICC | 500 | 800 | μA | 驱动器关闭，接收机使能，REB = 0V，DE = 0V，空载 | 6 | |
| Standby supply current (driver and receiver disabled) | ICC | 5 | μA | 驱动器关闭，接收机关闭，REB = VCC，DE = 0V，DI = VCC，空载 | 6 | ||
| Driver differential output rise/fall time | tr, tf | 150 | 500 | ns | RL = 54Ω，CL = 50pF，见图 8-4 (CS48505Ax) | 7 | |
| Driver propagation delay | tPHL, tPLH | 100 | 250 | ns | (CS48505Ax) | 7 | |
| Driver pulse width distortion | tSK(P) | 10 | ns | /tPHL, tPLH/ (CS48505Ax) | 7 | ||
| Driver disable time | tPHZ, tPLZ | 10 | 30 | ns | 见图 8-5 和图 8-6 (CS48505Ax) | 7 | |
| Driver enable time (REB=0V) | tPZH, tPZL | 300 | 800 | ns | REB = 0V，见图 8-5 和图 8-6 (CS48505Ax) | 7 | |
| Driver enable time (REB=VCC) | tPZH, tPZL | 6 | 12 | μs | REB = VCC，见图 8-5 和图 8-6 (CS48505Ax) | 7 | |
| Receiver output rise/fall time | tr, tf | 10 | 20 | ns | CL = 15pF，见图 8-7 (CS48505Ax) | 7 | |
| Receiver propagation delay | tPHL, tPLH | 50 | 100 | ns | (CS48505Ax) | 7 | |
| Receiver pulse width distortion | tSK(P) | 7 | ns | /tPHL, tPLH/ (CS48505Ax) | 7 | ||
| Receiver disable time | tPHZ, tPLZ | 30 | 60 | ns | 见图 8-8 (CS48505Ax) | 7 | |
| Receiver enable time (DE=VCC) | tPZH(1), tPZL(1), tPZH(2), tPZL(2) | 50 | 100 | ns | DE = VCC，见图 8-8 和图 8-9 (CS48505Ax) | 7 | |
| Receiver enable time (DE=0V) | tPZH(1), tPZL(1), tPZH(2), tPZL(2) | 6 | 12 | μs | DE = 0V，见图 8-8 和图 8-9 (CS48505Ax) | 7 | |
| Supply voltage VCC | VCC | 3 | 5 | 5.5 | V | 参照 GND | 5 |
| Bus input voltage | VIN | -7 | 12 | V | 5 | ||
| High-level input threshold voltage | VIH | 2 | V | 5 | |||
| Low-level input threshold voltage | VIL | 0 | 0.8 | V | 5 | ||
| Differential load resistance | RL | 54 | Ω | 5 | |||
| Data rate CS48505Ax | 1/tUI | 0.5 | Mbps | CS48505Ax | 5 | ||
| Operating ambient temperature | TA | -40 | 125 | °C | 5 | ||
| Operating junction temperature | TJ | -40 | 150 | °C | 5 | ||
| Supply voltage VCC (absolute) | VCC | -0.5 | 7 | V | 参照 GND，峰值 | 5 | |
| Bus voltage A, B | VIO | -8 | 13 | V | 总线 A，B | 5 | |
| Bus voltage difference between A and B | VIO_DIF | -8 | 13 | V | 总线 A 和 B 之间的电压差 | 5 | |
| Logic input voltage (DI, DE, REB) | VIO | -0.3 | V | DI，DE，REB; upper limit printed as VCC + 0.33 | 5 | ||
| Logic output voltage (RO) | VIO | -0.3 | V | RO; upper limit printed as VCC + 0.33 | 5 | ||
| Junction temperature (absolute) | TJ | 150 | °C | 结温 | 5 | ||
| Storage temperature | TSTG | -65 | 150 | °C | 5 | ||
| Thermal resistance junction-to-ambient (MSOP8) | RθJA | 160 | °C/W | 芯片结到环境的热阻, MSOP8 column | 5 | ||
| Thermal shutdown temperature | TSD | 170 | °C | 6 | |||
| Thermal shutdown hysteresis | TSD hysteresis | 20 | °C | 6 |
CAD (KiCad official)
- Symbol:
CS48505AM - Footprint:
Package_SO:MSOP-8_3x3mm_P0.65mm - 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files:
cs48505am-etched.step/cs48505am-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cs48505am.step/cs48505am.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Chipanalog datasheet (22 pp, sha256
4cc3e4a98400ee1a, retrieved 2026-10-20, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).