# 74FCT244CTSOG

**RENESAS** · Buffers / Drivers · SOIC-20-300mil

74FCT244CTSOG from RENESAS, in a SOIC-20-300mil. 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 | OEA | input | Active-LOW 3-state output enable input for the A-group outputs (OA0-OA3). |
| 2 | DA0 | input | Data input A0, buffered to output OA0 per the function table. |
| 3 | OB0 | output | 3-state buffer output B0, high-drive (-15mA IOH, 64mA IOL), high impedance when OEB is HIGH. |
| 4 | DA1 | input | Data input A1, buffered to output OA1 per the function table. |
| 5 | OB1 | output | 3-state buffer output B1, high-drive (-15mA IOH, 64mA IOL), high impedance when OEB is HIGH. |
| 6 | DA2 | input | Data input A2, buffered to output OA2 per the function table. |
| 7 | OB2 | output | 3-state buffer output B2, high-drive (-15mA IOH, 64mA IOL), high impedance when OEB is HIGH. |
| 8 | DA3 | input | Data input A3, buffered to output OA3 per the function table. |
| 9 | OB3 | output | 3-state buffer output B3, high-drive (-15mA IOH, 64mA IOL), high impedance when OEB is HIGH. |
| 10 | GND | power_in | Ground, 0V reference for the device. |
| 11 | DB3 | input | Data input B3, buffered to output OA3 per the pin labeling of the package drawing. |
| 12 | OA3 | output | 3-state buffer output A3, high-drive (-15mA IOH, 64mA IOL), high impedance when OEA is HIGH. |
| 13 | DB2 | input | Data input B2 of the B-group inputs. |
| 14 | OA2 | output | 3-state buffer output A2, high-drive (-15mA IOH, 64mA IOL), high impedance when OEA is HIGH. |
| 15 | DB1 | input | Data input B1 of the B-group inputs. |
| 16 | OA1 | output | 3-state buffer output A1, high-drive (-15mA IOH, 64mA IOL), high impedance when OEA is HIGH. |
| 17 | DB0 | input | Data input B0 of the B-group inputs. |
| 18 | OA0 | output | 3-state buffer output A0, high-drive (-15mA IOH, 64mA IOL), high impedance when OEA is HIGH. |
| 19 | OEB | input | Active-LOW 3-state output enable input for the B-group outputs (OB0-OB3). |
| 20 | VCC | power_in | Positive supply, 5.0V ±5% industrial (±10% military); absolute maximum -0.5 to +7V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | RENESAS |
| Package | SOIC-20-300mil |
| Category | Logic ICs |
| Pins | 20 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input HIGH Level | VIH | 2 |  |  | V | Guaranteed logic HIGH level | 3 |
| Input LOW Level | VIL |  |  | 0.8 | V | Guaranteed logic LOW level | 3 |
| Input HIGH Current | IIH | -1 |  | 1 | µA | VCC = Max. VI = 2.7V | 3 |
| Input LOW Current | IIL | -1 |  | 1 | µA | VCC = Max. VI = 0.5V | 3 |
| High Impedance Output Current (3-State, VO = 2.7V) | IOZH | -1 |  | 1 | µA | VCC = Max VO = 2.7V | 3 |
| High Impedance Output Current (3-State, VO = 0.5V) | IOZL | -1 |  | 1 | µA | VCC = Max VO = 0.5V | 3 |
| Input HIGH Current (II) | II | -1 |  | 1 | µA | VCC = Max., VI = VCC (Max.) | 3 |
| Clamp Diode Voltage | VIK |  | -0.7 | -1.2 | V | VCC = Min, IIN = -18mA | 3 |
| Quiescent Power Supply Current | ICC |  | 0.01 | 1 | mA | VCC = Max., VIN = GND or VCC | 3 |
| Quiescent Power Supply Current, TTL Inputs HIGH | ΔICC |  | 0.5 | 2 | mA | VCC = Max., VIN = 3.4V (per TTL input) | 4 |
| Dynamic Power Supply Current | ICCD |  | 0.15 | 0.25 | mA/MHz | VCC = Max., VIN = VCC / GND, outputs open, OEA = OEB = GND, one input toggling 50% duty | 4 |
| Total Power Supply Current (10MHz, one input at VIN = GND/VCC) | IC |  | 1.5 | 3.5 | mA | VCC = Max., VIN = VCC, VIN = GND, outputs open, fi = 10MHz, 50% duty, OEA = OEB = GND | 4 |
| Total Power Supply Current (10MHz, TTL input at VIN = 3.4V) | IC |  | 1.8 | 4.5 | mA | VCC = Max., VIN = 3.4V, VIN = GND, outputs open, fi = 10MHz, 50% duty, OEA = OEB = GND | 4 |
| Short Circuit Current | IOS | -60 | -120 | -225 | mA | VCC = Max., VO = GND | 3 |
| Output HIGH Voltage (IND, IOH = -8mA) | VOH | 2.4 | 3.3 |  | V | VCC = Min, VIN = VIH or VIL, IOH = -8mA (IND) | 3 |
| Output HIGH Voltage (IND, IOH = -15mA) | VOH | 2 | 3 |  | V | VCC = Min, VIN = VIH or VIL, IOH = -15mA (IND) | 3 |
| Output LOW Voltage (IND, IOL = 64mA) | VOL |  | 0.3 | 0.55 | V | VCC = Min, VIN = VIH or VIL, IOL = 64mA (IND) | 3 |
| Input Capacitance | CIN |  | 6 | 10 | pF | VIN = 0V, TA = +25°C, F = 1.0MHz (measured at characterization, not tested) | 2 |
| Output Capacitance | COUT |  | 8 | 12 | pF | VOUT = 0V, TA = +25°C, F = 1.0MHz (measured at characterization, not tested) | 2 |
| Supply voltage tolerance (Industrial) | VCC | -5 |  | 5 | % | Industrial: VCC = 5.0V ±5% | 3 |
| Operating ambient temperature (Industrial) | TA | -40 |  | 85 | °C | Industrial range (74 prefix), VCC = 5.0V ±5% | 3 |
| Terminal Voltage with Respect to GND (inputs and VCC) | VTERM | -0.5 |  | 7 | V | Inputs and VCC terminals only | 2 |
| Terminal Voltage with Respect to GND (outputs and I/O) | VTERM | -0.5 |  |  | V | Output and I/O terminals only; upper limit printed as VCC+0.5 | 2 |
| Storage Temperature | TSTG | -65 |  | 150 | °C |  | 2 |
| DC Output Current | IOUT | -60 |  | 120 | mA |  | 2 |

## CAD (KiCad official)

- Symbol: `74FCT244CTSOG`
- Footprint: `Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm`
- 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
- 3D model files: `74fct244ctsog-etched.step` / `74fct244ctsog-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `74fct244ctsog.step` / `74fct244ctsog.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [RENESAS datasheet](docs/74fct244ctsog-datasheet.pdf) (7 pp, sha256 `8c7c2c1da8599793`, retrieved 2026-10-30, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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).

[Datasheet PDF](docs/74fct244ctsog-datasheet.pdf)