DG445DJ Maxim Integrated Products, DG445DJ Datasheet - Page 6

• Manufacturer Part Number: DG445DJ
• Description: IC SWITCH QUAD SPST 16DIP
• Manufacturer: Maxim Integrated Products

Specifications of DG445DJ

• Function: Switch
• Circuit: 4 x SPST - NO
• On-state Resistance: 85 Ohm
• Voltage Supply Source: Single, Dual Supply
• Voltage - Supply, Single/dual (±): 10 V ~ 30 V, ±4.5 V ~ 20 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 16-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Using supply voltages other than ±15V will reduce the
analog signal range. The DG444/DG445 switches oper-
Improved, Quad, SPST Analog Switches
_____________________Pin Description
• Switches are open when power is off.
• IN, D, and S should not exceed V+ or V-, even with
• Switch leakage is from each analog switch terminal
Figure 2. Switching Time
6
2, 15, 10, 7
3, 14, 11, 6
1, 16, 9, 8
the power off.
to V+ or V-, not to other switch terminals.
DIP/SO
_______________________________________________________________________________________
12
13
—
4
5
SWITCH
OUTPUT
LOGIC
INPUT
PIN
+3V
0V
0V
Operation with Supply Voltages
15, 14, 7, 6
16, 13, 8, 5
THIN QFN
LOGIC INPUT WAVEFORM IS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
1, 12, 9 4
Applications Information
EP
10
11
2
3
V
t
ON
OUT
50%
0.8 x V
IN1–IN4
D1–D4
NAME
S1–S4
GND
PAD
VL
V+
V-
OUT
General Operation
Other than ±15V
t
OFF
Logic Control
Inputs
Drain Outputs
Source Outputs
Negative-Supply
Voltage Input
Ground
Logic-Supply
Voltage Input
Positive-Supply-
Voltage
Input—Connected
to Substrate
Exposed Pad
Connect Pad to V+
t f < 20ns
t r < 20ns
FUNCTION
0.8 x V
OUT
SWITCH
LOGIC
INPUT
INPUT
ate with ±4.5V to ±20V bipolar supplies or with a +10V
to +30V single supply; connect V- to 0V when operating
with a single supply. Also, all device types can operate
with unbalanced supplies such as +24V and -5V. V
must be connected to +5V to be TTL compatible, or to
V+ for CMOS-logic level inputs. The Typical Operating
Characteristics graphs show typical on-resistance with
±20V, ±15V, ±10V, and ±5V supplies. (Switching times
increase by a factor of two or more for operation at ±5V.)
Proper power-supply sequencing is recommended
for all CMOS devices. Do not exceed the absolute
maximum ratings because stresses beyond the list-
ed ratings may cause permanent damage to the
devices. Always sequence V+ on first, followed by
V
ing is not possible, add two small, external signal
diodes in series with supply pins for overvoltage
protection (Figure 1). Adding diodes reduces the
analog signal range to 1V below V+ and 1V above
V-, but low switch resistance and low leakage char-
acteristics are unaffected. Device operation is
unchanged, and the difference between V+ and V-
should not exceed +44V.
Figure 1. Overvoltage Protection Using External Blocking Diodes
+3V
L
, V-, and logic inputs. If power-supply sequenc-
C
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
IN
D
V
REPEAT TEST FOR CHANNELS 2, 3, AND 4.
g
GND
+5V
V
L
V
OUT
= V
D
(
S
R
+15V
-15V
L
Overvoltage Protection
V+
V-
+ r
R
S
DS(ON)
L
V+
V-
)
R
L
DG444
DG445
D
C
L
V
OUT
L