Datasheet

TLV2553
SLAS354B – SEPTEMBER 2001 – REVISED SEPTEMBER 2002
5
www.ti.com
electrical characteristics over recommended operating free-air temperature range, V
REF+
= 5 V,
I/O CLOCK frequency = 15 MHz when V
CC
= 5 V, V
REF+
= 2.5 V, I/O CLOCK frequency = 10 MHz when
V
CC
= 2.7 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP
†
MAX UNIT
V
OH
High level out
p
ut voltage
V
CC
= 4.5 V, I
OH
= –1.6 mA
V
CC
= 2.7 V, I
OH
= –0.2 mA
30 pF 2.4
V
V
OH
High
-
level
output
voltage
V
CC
= 4.5 V, I
OH
= –20 µA
V
CC
= 2.7 V, I
OH
= –20 µA
30 pF V
CC
–0.1
V
V
OL
Low level out
p
ut voltage
V
CC
= 5.5 V, I
OL
= 1.6 mA
V
CC
= 3.6 V, I
OH
= 0.8 mA
30 pF 0.4
V
V
OL
Low
-
level
output
voltage
V
CC
= 5.5 V, I
OL
= –20 µA
V
CC
= 3.6 V, I
OH
= –20 µA
30 pF 0.1
V
I
OZ
High im
p
edance off state out
p
ut current
V
O
= V
CC
, CS at V
CC
1 2.5
µA
I
OZ
High
-
impedance
off
-
state
output
current
V
O
= 0 V, CS at V
CC
–1 –2.5
µ
A
I
CC
O
p
erating su
pp
ly current
CS at 0 V Ext Ref
V
CC
= 5 V 1.2
mA
I
CC
Operating
supply
current
CS
at
0
V
,
Ext
.
Ref
V
CC
= 2.7 V 0.9
mA
I
CC(PD)
Power-down current
For all digital inputs,
0 ≤ V
I
≤ 0.5 V or
V
I
≥ V
CC
05V
Software power
down
0.1 1
µ
A
CC(PD)
V
I
≥
V
CC
–
0
.
5
V
,
I/O CLOCK = 0 V
Auto power down 0.1 10
µ
I
IH
High-level input current V
I
= V
CC
0.005 2.5 µA
I
IL
Low-level input current V
I
= 0 V –0.005 –2.5 µA
I
lk
Selected channel leakage current
Selected channel at V
CC
, Unselected
channel at 0 V
1
µA
I
lkg
Selected
channel
leakage
current
Selected channel at 0 V, Unselected
channel at V
CC
–1
µ
A
f
(OSC)
Internal oscillator frequency
V
CC
= 4.5 V to 5.5 V 3.27
MHz
f
(OSC)
Internal
oscillator
frequency
V
CC
= 2.7 V to 3.6 V 2.56
MHz
t
t
Conversion time = 13 5X [f
(OSC)
]+25ns
V
CC
= 4.5 V to 5.5 V 4.15
µs
t
convert
Conversion
time
=
13
.
5X
[f
(OSC)
]
+
25
ns
V
CC
= 2.7 V to 3.6 V 5.54
µ
s
Internal oscillator frequency voltage 3.6 4.1 V
Z
i
In
p
ut im
p
edance
‡
Analog in
p
uts
V
CC
= 4.5 V 500
Ω
Z
i
Input
impedance
‡
Analog
inputs
V
CC
= 2.7 V 600
Ω
C
i
In
p
ut ca
p
acitance
Analog inputs 45 55
p
F
C
i
Input
capacitance
Control inputs 5 15
pF
†
All typical values are at V
CC
= 5 V, T
A
= 25°C.
‡
The switch resistance is very nonlinear and varies with input voltage and supply voltage. This is the worst case.