TLV2556

SLAS355A – DECEMBER 2001 – REVISED SEPTEMBER 2002

5

www.ti.com

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

V

High level output voltage

VCC = 4.5 V, IOH = –1.6 mA

VCC = 2.7 V, IOH = –0.2 mA

30 pF

2.4

V

VOH

High-level output voltage

VCC = 4.5 V, IOH = –20 µA

VCC = 2.7 V, IOH = –20 µA

30 pF

VCC –0.1

V

V

Low level output voltage

VCC = 5.5 V, IOL = 1.6 mA

VCC = 3.6 V, IOH = 0.8 mA

30 pF

0.4

V

VOL

Low-level output voltage

VCC = 5.5 V, IOL = –20 µA

VCC = 3.6 V, IOH = –20 µA

30 pF

0.1

V

I

High impedance off state output current

VO = VCC,

CS at VCC

1

2.5

A

IOZ

High-impedance off-state output current

VO = 0 V,

CS at VCC

–1

–2.5

µA

CS at 0 V

Ext Ref

VCC = 5 V

1.2

I

Operating supply current

CS at 0 V,

Ext. Ref

VCC = 2.7 V

0.9

mA

ICC

Operating supply current

CS at 0 V

Int Ref

VCC = 5 V

3

mA

CS at 0 V,

Int. Ref

VCC = 2.7 V

2.4

I

Software power down current

For all digital inputs,

0 V

≤ VI ≤ 0.5 V or

Ext. Ref

0.1

1

µA

ICC(SPD) Software power-down current

0 V

≤ VI ≤ 0.5 V or

VI ≥ VCC – 0.5 V,

SCLK = 0 V

Int. Ref

0.1

1

µA

I

Auto power down current

For all digital inputs,

0 V

≤ VI ≤ 0.5 V or

Ext. Ref

0.1

10

A

ICC(APD) Auto power-down current

0 V

≤ VI ≤ 0.5 V or

VI ≥ VCC – 0.5 V,

SCLK = 0 V

Int. Ref

1800

µA

IIH

High-level input current

VI = VCC

0.005

2.5

µA

IIL

Low-level input current

VI = 0 V

–0.005

–2.5

µA

I

Selected channel leakage current

Selected channel at VCC , Unselected

channel at 0 V

1

µA

Ilkg

Selected channel leakage current

Selected channel at 0 V, Unselected channel

at VCC

–1

µA

f

Internal oscillator frequency

VCC = 4.5 V to 5.5 V

3.27

MHz

f(OSC)

Internal oscillator frequency

VCC = 2.7 V to 3.6 V

2.56

MHz

t

Conversion time 13 5

 [f

]+25ns

VCC = 4.5 V to 5.5 V

4.15

µs

tconv

Conversion time = 13.5

 [f(OSC)] + 25 ns

VCC = 2.7 V to 3.6 V

5.54

µs

Internal oscillator frequency switch over

voltage

3.6

4.1

V

Z

Analog input MUX impedance‡

VCC = 4.5 V

600

Ω

Zi

Analog input MUX impedance‡

VCC = 2.7 V

500

Ω

C

Input capacitance

Analog inputs

45

55

pF

Ci

Input capacitance

Control inputs

5

15

pF

† All typical values are at VCC = 5 V, TA = 25°C.

‡ The switch resistance is very nonlinear and varies with input voltage and supply voltage. This is the worst case.