TL851

SONAR RANGING CONTROL

SLSS004 – SEPTEMBER 1983 – REVISED MARCH 1988

3

POST OFFICE BOX 655303

Voltage range at any pin with respect to GND

– 0.5 V to 7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

– 7 V to 0.5 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous total dissipation at (or below) 25

°C free-air temperature (see Note 1)

1150 mW

. . . . . . . . . . . . . . .

Operating free-air temperature range

0

°C to 40°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range

– 65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

260

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. This is a stress rating only, and

functional operation of the device at these or any other conditions beyond those indicated in the recommended operating conditions section of this

specification is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: For operation above 25

°C, derate linearly at the rate of 9.2 mW/°C.

recommended operating conditions

MIN

MAX

UNIT

Supply voltage, VCC

4.5

6.8

V

High-level input voltage, VIH

BLNK, BINH, INIT

2.1

V

Low-level input voltage, VIL

BLNK, BINH, INIT

0.6

V

Delay time, power up to INIT high

5

ms

Operating free-air temperature, TA

0

40

°C

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

temperature

PARAMETER

TEST CONDITIONS

MIN

TYP‡

MAX

UNIT

Input current

BLNK, BINH, INIT

VI = 2.1 V

1

mA

High-level output current, IOH

ECHO, OSC, GCA, GCB, GCC, GCD

VOH = 5.5 V

100

µA

Low-level output current, IOH

ECHO, OSC, GCA, GCB, GCC, GCD

IOL = 1.6 mA

0.4

V

On-state output current

SMIT output

VO = 1 V

–140

mA

Internal blanking interval

REC input

2.38§

ms

Frequency during 16 pulse transmit period

OSC output

49.4§

kHz

Frequency during 16-pulse transmit period

XMIT output

49.4§

kHz

Frequency after 16 pulse transmit period

OSC output

93.3§

kHz

Frequency after 16-pulse transmit period

XMIT output

0

kHz

Supply current ICC

During transmit period

260

mA

Supply current, ICC

After transmit period

55

mA

‡ Typical values are at VCC = 5 V and TA = 25°C.

§ These typical values apply for a 420-kHz ceramic resonator.