LC7455 datasheet(4/13 Pages) SANYO

4 / 13 page

No. 5680-4/13

LC7455A, 7455M

Parameter

Symbol

Conditions

Ratings

Unit

Maximum supply voltage

VDD max

VDD1, VDD2: VDD1 = VDD2

–0.3 to +7.0

Input voltage

HS/CFIN, CVIN, SCKIN, CE

–0.3 to VDD +0.3

Output voltage

LN21, CPDT, O/E/CFOUT, HS/CFIN

–0.3 to VDD +0.3

Allowable power dissipation

Pd max

LC7455A

300

LC7455M

150

Operating temperature

Topr

–30 to +70

°C

Storage temperature

Tstg

–55 to +150

°C

Specifications

Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V

Note: VSS1 and VSS2 must be at the same potential.

VDD1 and VDD2 must be at the same potential.

Parameter

Symbol

Conditions

Ratings

Unit

min

typ

max

Operating supply voltage

VDD

VDD1, VDD2 : VDD1 = VDD2

4.5

5.5

Input high-level voltage

VIH

HS/CFIN, SCKIN, CE;

0.75 VDD

VDD

VDD = 4.5 to 5.5 V

Input low-level voltage

VIL

HS/CFIN, SCKIN, CE;

VSS

0.25VDD

VDD = 4.5 to 5.5 V

CVIN input amplitude

CVSYNC

CVIN : SYNC-WHITE = 1.0 V;

1Vp-p – 3dB

1Vp-p

1Vp-p + 3 dB

VDD = 4.5 to 5.5 V

HS/CFIN : VDD = 4.5 V

HS input frequency range

For mode 3

15.23

15.73

16.23

kHz

For mode 4

15.13

15.63

16.13

kHz

HS/CFIN, O/E/CFOUT;

Oscillator frequency range*1

FmCF

For mode 2, see Figure 1.

503

508

513

kHz

VDD = 4.5 to 5.5 V

HS/CFIN, O/E/CFOUT;

Oscillator stabilization time*2

tmsCF

For mode 2, see Figure 2.

0.5

VDD = 4.5 to 5.5 V

Allowable Operating Ranges at Ta = –30 to +70°C, VSS = 0 V

Parameter

Symbol

Conditions

Ratings

Unit

min

typ

max

Input high-level current

IIH

HS/CFIN, SCKIN, CE : VIN = VDD;

µA

VDD = 4.5 to 5.5 V

Input low-level current

IIL

HS/CFIN, SCKIN, CE : VIN = VSS;

–1

µA

VDD = 4.5 to 5.5 V

Output high-level voltage

VOH

LN21, O/E/CFOUT, HS/CFIN;

VDD – 1.2

IOH = –4 mA ; VDD = 4.5 to 5.5 V

Output low-level voltage

VOL

LN21, CPDT, O/E/CFOUT,

HS/CFIN : IOL = 10 mA; VDD = 4.5 to 5.5 V

Input clamping voltage

VCLMP

CVIN ; VDD = 5.0 V

2.3

2.5

2.7

Input clamping current

IIC

CVIN : CVIN = 3 V ; VDD = 5.0 V

µA

Output clamping current

IOC

CVIN : CVIN = 2 V ; VDD = 5.0 V

–120

–70

–30

µA

Current drain

IDD

VDD1, VDD2 ; VDD = 4.5 to 5.5 V

Electrical Characteristics at Ta = –30 to +70°C, VSS = 0 V.

Note: 1. See Table 1 for more information on the oscillator frequency.

2. The oscillator stabilization time is the time required until the oscillator is stable after the power-supply voltage is applied. See figure 2.

Parameter

Symbol

Conditions

Ratings

Unit

min

typ

max

[Serial clock]

Input clock period

tCKCY

SCKIN : See Figure 3.

µs

Input clock low-level pulse width

tCKL

SCKIN : See Figure 3.

0.5

µs

Input clock high-level pulse width

tCKH

SCKIN : See Figure 3.

0.5

µs

Setup time

tICK

SCKIN : Stipulated with respect to the falling

µs

edge of CE.

[Serial output]

Output delay time

tCKO

0.5

µs

Serial Output Characteristics at Ta = –30 to +70°C, VSS = 0 V, VDD = 4.5 to 5.5 V

Stipulated with respect to the falling edge of

SCKIN. A 1-k

Ω external pull-up resistor is

connected. See Figure 3.

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