FT245B 参数 Datasheet PDF下载

FT245BL USB FIFO ( USB - Parallel ) I.C.

6.0

Absolute Maximum Ratings

These are the absolute maximum ratings for the FT245BL device i

n accordance with the Absolute Maximum Rating System

(IEC 60134).

Exceeding these may cause permanent damage to the device.

Parameter

Storage Temperature

Floor Life (Out of Bag) at Factory Ambient

(30

o

C/60% Relative Humidity)

Ambient Temperature (Power Applied)

M.T.B.F. (at 35

o

C)

VCC Supply Voltage

D.C. Input Voltage - USBDP and USBDM

D.C. Input Voltage - High Impedance Bidirectionals

D.C. Input Voltage - All other Inputs

DC Output Current – Outputs

DC Output Current – Low Impedance Bidirectionals

Power Dissipation (VCC = 5.25V)

Electrostatic Discharge Voltage (Human Body Model) (I < 1uA)

Latch Up Current (Vi = +/- 10V maximum, for 10 ms)

Value

–65

o

C to + 150

o

C

192 Hours (Level 3 Compliant)

**Note 5

0

o

C to + 70

o

C

247484 Hours ≈ 28 Years

-0.5 to +6.00

-0.5 to +3.8

-0.5 to +(Vcc +0.5)

-0.5 to +(Vcc +0.5)

24

24

500

+/- 3000

+/-200

V

V

V

V

mA

mA

mW

V

mA

Degrees C

Units

Degrees C

***

Note 5 -

If devices are stored out of the packaging beyond this time limit the devices should be baked before use.

The devices should be ramped up to a temperature of 110

o

C

and baked for 8 to 10 hours.

6.1

D.C. Characteristics

DC Characteristics ( Ambient Temperature = 0 to 70

o

C )

Operating Voltage and Current

Parameter

Vcc1

Vcc2

Icc1

Icc2

Description

VCC Operating Supply Voltage

VCCIO Operating Supply Voltage

Operating Supply Current

Operating Supply Current

Min

4.35

3.0

-

-

Typ

5.0

-

25

100

Max

5.25

5.25

-

200

Units

V

V

mA

uA

Normal Operation

USB Suspend

***

Note 6

Conditions

***Note 6

– Supply current excludes the 200uA nominal drawn by the external pull-up resistor on USBDP.

FIFO Data / Control Bus IO Pin Characteristics ( VCCIO = 5.0V )

Parameter

Voh

Vol

Vin

VHys

Description

Output Voltage High

Output Voltage Low

Input Switching Threshold

Input Switching Hysteresis

Min

3.2

0.3

1.3

50

Typ

4.1

0.4

1.6

55

Max

4.9

0.6

1.9

60

Units

V

V

V

mV

Conditions

I source = 2mA

I sink = 2 mA

***

Note 7

DS245BL Version 1.7

© Future Technology Devices Intl. Ltd. 2005

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