2
FN7421.3
October 18, 2010
Pinouts
EL4340
(24 LD QSOP)
TOP VIEW
EL4342
(32 LD QFN)
TOP VIEW
Functional Diagram EL4340
Functional Diagram EL4342
GND B
NIC
GND A
IN0A
IN0B
NIC
LE
ENABLE
HIZ
OUTA
NIC
IN0C
V+
OUTB
1
2
3
4
16
15
14
13
5
6
7
12
11
9
8
10
20
19
18
17
24
23
22
21
IN1B
NIC
IN1A
OUTC
V-
NIC
IN1C
GND C
S0
NIC
AV=1
LATCHED ON HIGH LE
NIC = NO INTERNAL CONNECTION
THERMAL
PAD
25
24
23
22
21
20
19
32
31
30
29
28
10
11
12
13
14
1
2
3
4
5
6
7
IN1A
NIC
IN1B
NIC
IN1C
GND B
IN2A
ENABLE
NIC
V+
OUTA
V-
OUTB
OUTC
GND
A
IN0
A
NIC
IN0
B
NIC
IN2
C
GND
C
IN3
A
NIC
IN3
B
8
9
18
17
15
27
16
26
S0
S1
NIC
IN3
C
NIC
IN2B
IN0
C
HIZ
AV=1
THERMAL PAD INTERNALLY CONNECTED TO V-.
NIC = NO INTERNAL CONNECTION
PAD MUST BE TIED TO V-
OUT
DECODE
IN0(A, B, C)
IN1(A, B, C)
C
LE
S0
ENABLE
DL Q
EN0
EN1
HIZ
A LOGIC HIGH ON LE WILL LATCH THE LAST S0 STATE.
THIS LOGIC STATE IS PRESERVED WHEN CYCLING HIZ
OR ENABLE FUNCTIONS.
AMPLIFIER BIAS
DECODE
IN0(A, B, C)
IN1(A, B, C)
IN2(A, B, C)
IN3(A, B, C)
S0
S1
EN0
EN1
EN3
EN2
OUT
HIZ
ENABLE
AMPLIFIER BIAS
EL4340, EL4342