component
ADM3312EARUZ
Public Made by Adomby adom
Analog Devices RS232 ICs, TSSOP-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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ADM3312EARUZ
Analog Devices · RS232 ICs · TSSOP-24
ADM3312EARUZ from Analog Devices, in a TSSOP-24. 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 | V+ | power_out | Internally generated positive supply of 7.25 V (6.5 V nominal for ADM3315E); capacitor C4 is connected between VCC and V+. |
| 2 | C2+ | passive | External capacitor 2 positive terminal; 0.1 µF recommended, up to 1 µF can be used. |
| 3 | VCC | power_in | Power supply input, 2.7 V to 3.6 V. |
| 4 | C2- | passive | External capacitor 2 negative terminal; 0.1 µF recommended, up to 1 µF can be used. |
| 5 | EN | input | Receiver enable; a high level three-states all the receiver outputs. |
| 6 | C1+ | passive | External capacitor 1 positive terminal; 0.1 µF recommended, up to 1 µF can be used. |
| 7 | T1IN | input | Transmitter 1 input accepting TTL/CMOS levels, with an internal 400 kΩ pull-up resistor to VCC. |
| 8 | T2IN | input | Transmitter 2 input accepting TTL/CMOS levels, with an internal 400 kΩ pull-up resistor to VCC. |
| 9 | T3IN | input | Transmitter 3 input accepting TTL/CMOS levels, with an internal 400 kΩ pull-up resistor to VCC. |
| 10 | R1OUT | output | Receiver 1 output with TTL/CMOS levels; three-stated when EN is high. |
| 11 | R2OUT | output | Receiver 2 output with TTL/CMOS levels; three-stated when EN is high. |
| 12 | R3OUT | output | Receiver 3 output with TTL/CMOS levels; remains active in shutdown. |
| 13 | R3IN | input | Receiver 3 input accepting RS-232 levels, with an internal 5 kΩ pull-down resistor to GND. |
| 14 | R2IN | input | Receiver 2 input accepting RS-232 levels, with an internal 5 kΩ pull-down resistor to GND. |
| 15 | R1IN | input | Receiver 1 input accepting RS-232 levels, with an internal 5 kΩ pull-down resistor to GND. |
| 16 | T3OUT | output | Transmitter 3 RS-232 output, typically ±6.4 V for ADM3312E. |
| 17 | T2OUT | output | Transmitter 2 RS-232 output, typically ±6.4 V for ADM3312E. |
| 18 | T1OUT | output | Transmitter 1 RS-232 output, typically ±6.4 V for ADM3312E. |
| 19 | SD | input | Shutdown control; a high level disables the charge pump and reduces quiescent current to less than 1 µA. |
| 20 | C1- | passive | External capacitor 1 negative terminal; 0.1 µF recommended, up to 1 µF can be used. |
| 21 | V- | power_out | Internally generated negative supply of −7.25 V; capacitor C5 is connected between GND and V−. |
| 22 | C3- | passive | External capacitor 3 negative terminal; 0.1 µF recommended, up to 1 µF can be used. |
| 23 | GND | power_in | Ground pin; must be connected to 0 V. |
| 24 | C3+ | passive | External capacitor 3 positive terminal; 0.1 µF recommended, up to 1 µF can be used. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | TSSOP-24 |
| Category | Communication Interface Chip/UART/485/232 |
| Pins | 24 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage VCC | VCC | 2.7 | 3.6 | V | Single supply | 7 | |
| Operating temperature range (industrial, A version) | TA | -40 | 85 | °C | 6 | ||
| Supply current, operating | ICC | 1 | mA | ADM3312E, product selection guide maximum | 7 | ||
| Supply current, shutdown | ICC | 1 | µA | ADM3312E, shutdown (SD high); footnote: typically 20 nA | 7 | ||
| Shutdown supply current typical | ICC | 20 | nA | Shutdown, typical (footnote to product selection guide) | 7 | ||
| Maximum data rate | 250 | 460 | kbps | RL = 3 kΩ to 7 kΩ, CL = 50 pF to 1000 pF, VCC = 3.0 V | 5 | ||
| Receiver propagation delay TPHL, TPLH | TPHL, TPLH | 0.3 | µs | CL = 150 pF | 5 | ||
| Receiver output enable time | tER | 100 | ns | 5 | |||
| Receiver output disable time | tDR | 300 | ns | 5 | |||
| Transmitter propagation delay TPHL, TPLH | TPHL, TPLH | 500 | ns | RL = 3 kΩ, CL = 1000 pF | 5 | ||
| Transition region slew rate | 3 | 18 | V/µs | RL = 3 kΩ, CL = 50 pF to 1000 pF; measured at +3 V to −3 V or −3 V to +3 V | 5 | ||
| ESD protection, I/O pins, human body model | -15 | 15 | kV | Human body model | 5 | ||
| ESD protection, I/O pins, IEC 1000-4-2 air discharge | -15 | 15 | kV | IEC 1000-4-2 air discharge | 5 | ||
| ESD protection, I/O pins, IEC 1000-4-2 contact discharge | -8 | 8 | kV | IEC 1000-4-2 contact discharge | 5 | ||
| Supply voltage VCC | VCC | -0.3 | 4 | V | 6 | ||
| Positive generated supply V+ | V+ | 9 | V | Printed as (VCC − 0.3 V) to +9 V; lower bound depends on VCC | 6 | ||
| Negative generated supply V− | V− | -9 | 0.3 | V | Printed as +0.3 V to −9 V | 6 | |
| Transmitter input voltage TIN | TIN | -0.3 | 6 | V | 6 | ||
| Receiver input voltage RIN | RIN | -30 | 30 | V | 6 | ||
| Transmitter output voltage TOUT | TOUT | -15 | 15 | V | 6 | ||
| Receiver output voltage ROUT | ROUT | -0.3 | V | Printed as up to (VCC + 0.3 V); upper bound depends on VCC | 6 | ||
| Storage temperature range | TSTG | -65 | 150 | °C | 6 | ||
| Lead temperature, soldering | 300 | °C | 10 sec soldering | 6 | |||
| Thermal impedance, junction-to-ambient | θJA | 68 | °C/W | TSSOP (RU-24) package | 6 | ||
| Internal positive supply V+ nominal (ADM3312E) | V+ | 7.25 | V | Generated by charge pump; 6.5 V nominal applies to ADM3310E/ADM3315E only | 9 | ||
| Internal negative supply V− nominal (ADM3312E) | V− | -7.25 | V | Generated by charge pump; −6.5 V nominal applies to ADM3310E/ADM3315E only | 9 | ||
| Transmitter output swing (ADM3312E) | TOUT | 6.4 | V | Printed ±6.4 V typical; VCC = 3.0 V, EIA-232 load | 9 | ||
| Transmitter input pull-up resistor | 400 | kΩ | Internal pull-up to VCC on each TIN | 9 | |||
| Receiver input pull-down resistor (ADM3312E) | 5 | kΩ | Internal pull-down to GND on each RIN; 22 kΩ applies to ADM3315E only | 9 | |||
| Charge pump capacitors C1 to C3 | C1, C2, C3 | 0.1 | 1 | µF | 0.1 µF recommended; larger values up to 1 µF can be used | 9 | |
| Charge pump oscillator frequency | 250 | kHz | 300 kHz applies to ADM3307E only | 13 | |||
| Receiver input hysteresis | 0.14 | V | Schmitt trigger inputs | 15 |
CAD (KiCad official)
- Symbol:
ADM3312EARUZ - Footprint:
Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm - 3D model: TSSOP-24 (KiCad packages3D, STEP)
- 3D model files:
adm3312earuz-etched.step/adm3312earuz-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);adm3312earuz.step/adm3312earuz.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (20 pp, sha256
19555870393bbfda, retrieved 2026-10-30, tier: manufacturer) - 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).