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49FCT3805DQGI

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RENESAS Clock Buffers, Drivers, QSOP-20-150mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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49FCT3805DQGI

RENESAS · Clock Buffers, Drivers · QSOP-20-150mil

49FCT3805DQGI from RENESAS, in a QSOP-20-150mil. 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 VCCA power_in Bank A power supply, VCC = 3.3V ± 0.3V.
2 OA1 output Bank A clock output 1, TTL compatible, follows INA when OEA is LOW and is high-impedance when OEA is HIGH.
3 OA2 output Bank A clock output 2, TTL compatible, follows INA when OEA is LOW and is high-impedance when OEA is HIGH.
4 OA3 output Bank A clock output 3, TTL compatible, follows INA when OEA is LOW and is high-impedance when OEA is HIGH.
5 GNDA power_in Bank A ground.
6 OA4 output Bank A clock output 4, TTL compatible, follows INA when OEA is LOW and is high-impedance when OEA is HIGH.
7 OA5 output Bank A clock output 5, TTL compatible, follows INA when OEA is LOW and is high-impedance when OEA is HIGH.
8 GNDQ power_in Ground for the quiet/monitor section of the device.
9 OEA input Active-LOW 3-state output enable for bank A outputs OA1-OA5; input can be driven from 3.3V or 5V components (VIH min 2V, VIL max 0.8V).
10 INA input Bank A clock input driving OA1-OA5; can be driven from 3.3V or 5V components, up to 166MHz for the 3805E (133MHz for the 3805D).
11 INB input Bank B clock input driving OB1-OB5 and the MON output; can be driven from 3.3V or 5V components, up to 166MHz for the 3805E (133MHz for the 3805D).
12 OEB input Active-LOW 3-state output enable for bank B outputs OB1-OB5; input can be driven from 3.3V or 5V components (VIH min 2V, VIL max 0.8V).
13 MON output Heartbeat monitor output identical to the other outputs and meeting the same output specifications, for diagnostics and PLL driving.
14 OB5 output Bank B clock output 5, TTL compatible, follows INB when OEB is LOW and is high-impedance when OEB is HIGH.
15 OB4 output Bank B clock output 4, TTL compatible, follows INB when OEB is LOW and is high-impedance when OEB is HIGH.
16 GNDB power_in Bank B ground.
17 OB3 output Bank B clock output 3, TTL compatible, follows INB when OEB is LOW and is high-impedance when OEB is HIGH.
18 OB2 output Bank B clock output 2, TTL compatible, follows INB when OEB is LOW and is high-impedance when OEB is HIGH.
19 OB1 output Bank B clock output 1, TTL compatible, follows INB when OEB is LOW and is high-impedance when OEB is HIGH.
20 VCCB power_in Bank B power supply, VCC = 3.3V ± 0.3V.

Key specifications

Parameter Value
Manufacturer RENESAS
Package QSOP-20-150mil
Category Clock and Timing
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 5.5 V 2
Input LOW Level VIL -0.5 0.8 V 2
Input HIGH Current IIH -1 1 µA VCC = Max., VI = 5.5V 2
Input LOW Current IIL -1 1 µA VCC = Max., VI = GND 2
High Impedance Output Current IOZH -1 1 µA VCC = Max., VO = VCC 2
Clamp Diode Voltage VIK -0.7 -1.2 V VCC = Min., IIN = -18mA 2
Output HIGH Current IODH -45 -74 -180 mA VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V 2
Output LOW Current IODL 50 90 200 mA VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V 2
Short Circuit Current IOS -60 -135 -240 mA VCC = Max., VO = GND 2
Output HIGH Voltage VOH 2.4 3 V VCC = Min., VIN = VIH or VIL, IOH = -12mA 2
Output LOW Voltage VOL 0.3 0.4 V VCC = Min., VIN = VIH or VIL, IOL = 12mA 2
Output LOW Voltage VOL 0.2 0.4 V VCC = Min., VIN = VIH or VIL, IOL = 8mA 2
Output LOW Voltage VOL 0.2 V VCC = Min., VIN = VIH or VIL, IOL = 100µA 2
Quiescent Power Supply Current ICCL/ICCH/ICCZ 0.1 30 µA VCC = Max., VIN = GND or VCC 3
Power Supply Current per Input HIGH ∆ICC 45 300 µA VCC = Max., VIN = VCC -0.6V 3
Dynamic Power Supply Current per Output ICCD 80 120 µA/MHz VCC = Max., CL = 15pF, All Outputs Toggling 3
Total Power Supply Current IC 125 150 mA VCC = Max., VIN = VCC or GND, CL = 15pF, All Outputs Toggling, fi = 133MHz 3
Propagation Delay INA to OAn, INB to OBn tPLH/tPHL 1 3 ns CL = 15pF, f ≤ 133MHz 4
Output Rise Time (0.8V to 2V) tR 1.5 ns 4
Output Fall Time (2V to 0.8V) tF 1.5 ns 4
Same device output pin to pin skew tSK(O) 270 ps 4
Pulse skew tSK(P) 270 ps 4
Part to part skew tSK(PP) 550 ps 4
Output Enable Time OEA to OAn, OEB to OBn tPZL/tPZH 5.2 ns 4
Output Disable Time OEA to OAn, OEB to OBn tPLZ/tPHZ 5.2 ns 4
Input Frequency fMAX 133 MHz 4
Input Capacitance CIN 3 4 pF TA = +25°C, f = 1.0MHz, VIN = 0V 2
Output Capacitance COUT 6 pF TA = +25°C, f = 1.0MHz, VOUT = 0V 2
Input Power Supply Voltage VCC -0.5 4.6 V 2
Input Voltage VI -0.5 5.5 V 2
Output Voltage VO -0.5 V -0.5 to VCC+0.5 2
Junction Temperature TJ 150 °C 2
Storage Temperature TSTG -65 165 °C 2
Operating Ambient Temperature (Industrial) TA -40 85 °C VCC = 3.3V ± 0.3V 2

CAD (KiCad official)

  • Symbol: 49FCT3805DQGI
  • Footprint: Package_SO:QSOP-20_3.9x8.7mm_P0.635mm
  • 3D model: QSOP-20-150mil (KiCad packages3D, STEP)
  • 3D model files: 49fct3805dqgi-etched.step / 49fct3805dqgi-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 49fct3805dqgi.step / 49fct3805dqgi.glb are the bare package body.

Provenance

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

  • Datasheet: RENESAS datasheet (8 pp, sha256 531ebfd5b7ed235c, retrieved 2026-10-27, 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