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LTC1390CS

8-Channel Analog Multiplexer with Serial Interface

Linear Technology 

LTC1390

ELECTRICAL CHARACTERISTICS

V+ = 3V, V– = GND = 0V, TA = operating temperature unless otherwise noted.

SYMBOL

Dynamic

fCLK

tON

tOFF

tOPEN

OIRR

OINJ

CS(OFF)

CD(OFF)

Supply

I+

PARAMETER

Clock Frequency

Enable Turn-On Time

Enable Turn-Off Time

Break-Before-Make Interval

Off Isolation

Charge Injection

Source Off Capacitance

Drain Off Capacitance

Positive Supply Current

CONDITIONS

MIN

VS = 1.5V, RL = 1k, CL = 35pF (Note 4)

VS = 1.5V, RL = 1k, CL = 35pF (Note 4)

(Note 4)

125

VS = 2VP-P, RL = 1k, f = 100kHz

RS = 0, CL = 1000pF, VS = 1V (Note 2)

All Logic Inputs Tied Together, VIN = 0V or VIN = 3V

q

TYP

MAX UNITS

5

MHz

490

700

ns

190

300

ns

290

ns

70

dB

±1

±5

pC

5

pF

10

pF

0.2

2

µA

The q denotes specifications which apply over the full operating

temperature range.

Note 1: Absolute maximum ratings are those beyond which the safety of

the device may be impaired.

Note 2: Guaranteed by design.

Note 3: Leakage current with a single 3V supply is guaranteed by

correlation with the leakage current of the ±5V supply.

Note 4: Timing specifications with a single 3V supply is guaranteed by

correlation with the timing specifications of the ±5V supply.

TYPICAL PERFORMANCE CHARACTERISTICS

ON-Resistance vs Temperature

300

250

V+ = 3V

200

V – = 0V

VS = 1.2V

150

100

V+ = 5V

V – = – 5V

50

VS = 0V

0

0 10

20 30 40 50 60 70

TEMPERATURE (˚C)

LTC1390 • G01

Driver Output Low Voltage

vs Output Current

6

TVA+

=

=

25°C

5V

5 V – = –5V

4

DATA 1

3

2

DATA 2

1

0

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

OUTPUT VOLTAGE (V)

LTC1390 • G02

Driver Output High Voltage

vs Output Current

0

–1

VTA+

=

=

25°C

5V

V– = –5V

–2

DATA 2

–3

–4

DATA 1

–5

–6

–7

2.0

2.5 3.0 3.5 4.0 4.5 5.0

OUTPUT VOLTAGE (V)

LTC1390 • G03

PIN FUNCTIONS

S0 to S7 (Pins 1 to 8): Analog Multiplexer Inputs/Analog

Demultiplexer Outputs.

GND (Pin 9): Digital Ground. Connect to system ground.

CLK (Pin 10): System Clock (TTL/CMOS Compatible). The

clock synchronizes the channel selection bits and the

serial data transfer from Data 1 to Data 2.

4

sn1390 1390fs

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