SN28837

1/2-INCH PAL TIMER

SOCS031B – JULY 1991

6

POST OFFICE BOX 655303

– 0.3 V to 7 V

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300 mW

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–20

°C to 45°C

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–55

°C to 125°C

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Lead temperature 1,6 mm (1/16 in) from case for 10 seconds

260

°C

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† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: All voltage values are with respect to GND.

recommended operating conditions

MIN

NOM

MAX

UNIT

Supply voltage, VDD

4.5

5

5.5

V

High-level input voltage, VIH

VDD x 0.7

V

Low-level input voltage, VIL

0.8

V

Operating frequency

13.375

MHz

Power-up time

300

µs

Operating free-air temperature, TA

–20

45

°C

electrical characteristics over recommended operating ranges of supply voltage and free-air

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VOH

GT3/SH2 and GT1/SH3

VDD = 4.5 V,

IOH = – 4 mA

3.5

V

VOH

All other outputs

VDD = 4.5 V,

IOH = – 2 mA

3.5

V

VOL

GT3/SH2 and GT1/SH3

VDD = 4.5 V,

IOL = 4 mA

0.5

V

VOL

All other outputs

VDD = 4.5 V,

IOL = 2 mA

0.5

V

IIH§

VIH = 5 V

1

µA

IIL

VIL = 0

–30

– 200

– 500

µA

IDD(AV)

Average supply current

10

30

mA

IDD(S)

Standby supply current

1

mA

‡ The HCR, SB, and VCR inputs are Schmitt-trigger inputs with 0.1-V to 1-V hysteresis.

§ All inputs except X1 have pullup-current sources.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

fclock

Frequency

S1, S2, S3, SH1, GT2, GT1/SH3, GT3/SH2

CL =50 pF

4.458333

MHz

tw

Pulse duration

S1, S2, S3, SH1, GT2, GT1/SH3, GT3/SH2

CL = 50 pF

75

ns

t

Rise time

GT1/SH3 and GT3/SH2

10

ns

tr

Rise time

All other outputs

CL =50 pF

50

ns

tf

Fall time

GT1/SH3 and GT3/SH2

CL = 50 pF

10

ns

tf

Fall time

All other outputs

50

ns