SCF5740 datasheet(2/12 Pages) SIEMENS

2 / 12 page

2–201

SCF5740/2/4

Maximum Rating

DC Supply Voltage ........................................ –0.5 to +7.0 Vdc

Input Voltage Levels Relative

to Ground................................................–0.5 toVCC+0.5 Vdc

Operating Temperature ................................. –40

°C to +85°C

Storage Temperature .................................... –40

°C to +100°C

Maximum Solder Temperature 0.063"

below Seating Plane, t<5 sec ...................................... 260

°C

Relative Humidity at 85

°C................................................. 85%

Maximum Number of LEDs at 100% Brightness ................. 64

Maximum Power Dissipation ........................................ 0.65 W

ESD (100 pF, 1.5 K

Ω)........................................................2 KV

Maximum Input Current .............................................

±186 mA

Switching Speciﬁcations

(over operating temperature range and VCC=4.5 V to 5.5 V)

Symbol

Description

Min.

Units

TRC

Reset Active Time

600

TLDS

Load Setup Time

TDS

Data Setup Time

TSDCLK

Clock Period

200

TSDCW

Clock Width

TLDH

Load Hold Time

TDH

Data Hold Time

TWR

Total Write Time

2.2

µs

TBL

Time Between Loads

600

Note:

TSDCW is the minimum time the SDCLK may be low or high. The

SDCLK period must be a minimum of 200 ns.

Figure 1. Timing diagram–Data write cycle

Figure 2. Timing diagram–Instruction cycle

SDCLK

SDCW

DATA

LOAD

LDS

TDH

LDH

LOAD

DATA

SDCLK

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