DG3157A Datasheet, PDF (1/7 Pages) Vishay Siliconix – Low Voltage, 300-MHz - 3 dB Bandwidth, SPDT Analog Switch with Power Down Protection (2:1 Multiplexer/Demultiplexer Bus Switch)

DG3157A, DG3157B
Vishay Siliconix
Low Voltage, 300-MHz - 3 dB Bandwidth, SPDT Analog Switch with
Power Down Protection
(2:1 Multiplexer/Demultiplexer Bus Switch)
DESCRIPTION
The DG3157A, DG3157B are high-speed single-pole
double-throw, low voltage switch. Using sub-micro CMOS
technology, the DG3157A, DG3157B achieves low on-
resistance and negligible propagation delay. The DG3157A,
DG3157B can handle both analog and digital signals and
permits signals with amplitudes of up to V_CC to be
transmitted in either direction. Select pin of control logic input
can be over the V+. When the select pin is low, B₀ is
connected to the output A pin. When the select pin is high,
B₁ is connected to the output A pin. The path that is open will
have a high-impedance state with respect to the output A pin.
Break before make is guaranteed. The DG3157A has an
internal pull down resistor on the control pin S, while the
DG3157B does not.
FEATURES
• Ultra small miniQFN6 package of
1 mm x 1.2 mm
• Wide operation voltage range: 1.8 V to 5.5 V
• Useful in both analog and digital signal
switching
Pb-free
Available
RoHS*
COMPLIANT
• 300 MHz - 3 dB bandwidth
• Power down safe design
• Low voltage logic threshold:
V_th(high) = 1.2 V at V+ = 3.3 V
• Minimal propagation delay
• Break-before-make switching
• Zero bounce in flow-through mode
• > 300 mA latch up current per JESD78
• > 8 kV ESD/HBM
• DG3157A version has internal pull down resistor on
control pin S
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
miniQFN-6
DG3157A
B₁ ¹
GND 2
6S
5 V+
TRUTH TABLE
Logic Input (S)
0
1
Function
B₀ Connected to A
B₁ Connected to A
B₀ 3
4A
Top View
Device Marking: E
miniQFN-6
DG3157B
ORDERING INFORMATION
Temp. Range
Package
- 40 °C to 85 °C
miniQFN-6
Part Number
DG3157ADN-T1-E4
DG3157BDN-T1-E4
B₁ ¹
GND 2
6S
5 V+
B₀ 3
4A
Top View
Device Marking: D
* Pb containing terminations are not RoHS compliant, exemptions may apply.
Document Number: 68628
S-81944-Rev. C, 25-Aug-08
www.vishay.com
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