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MAX14778
Dual ±25V Above- and Below-the-Rails 4:1 Analog Multiplexer
Simplify Designs with the Industry's First ±25V Above- and Below-the-Rails Multiplexer
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Status
| Part Number |
Status |
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MAX14778
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Active: In Production. |
Description
The MAX14778 dual 4:1 analog multiplexer supports analog signals up to ±25V with a single 3.0 to 5.5V supply. Each multiplexer has separate control inputs to allow independent switching, making the device ideal for multiplexing different communications signals with the same connector pins. Extended ESD protection of ±6kV (Human Body Model) enable direct interfacing to cables
and connectors.
The MAX14778 features a low 1.5Ω (max) on-resistance and 3mΩ (typ) flatness to maximize signal integrity over the entire common-mode voltage range. Each multiplexer can carry up to 300mA of continuous current through the multiplexer in either direction.
The MAX14778 supports switching of full-speed USB 1.1 signals (12Mbps) and RS-485 data rates of up to 20Mbps.
The MAX14778 is available in a 20-pin (5mm x 5mm) TQFN package and is specified over the -40°C to +85°C extended temperature range.
This video demonstrates the MAX14778, a new idea in analog switches with the industry's first ±25V above- and below-the-rails multiplexer.
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Data Sheet
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An evaluation kit is available: MAX14778EVKIT
Key Features
- ±25V Signal Range
- Single 3.0V to 5.5V Supply
- Two Independent Multiplexers
- 1.5Ω RON (max)
- 3mΩ RON Flatness (typ)
- 300mA Maximum Current Through Multiplexer
- 78pF Input Capacitance
- 75MHz Large-Signal Bandwidth
- Break-Before-Make Operation
- Extended ESD Protection on A_ and B_ Pins
- ±6kV Human Body Model (HBM)
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Applications/Uses
- Audio/Data Multiplexing
- Communication Systems
- Connector Sharing
- Gaming Machines
- Handheld Industrial Devices
- POS Peripherals
- RS-485/RS-232/USB 1.1 Multiplexing
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Key Specifications:
| Switches and Multiplexers (Low Voltage) |
| Part Number |
Config. |
Channels |
VSUPPLY (Single)
(V) |
VSUPPLY (Single)
(V) |
VSUPPLY (Dual)
(±V) |
VSIGNAL
(V) |
VSIGNAL
(V) |
Dynamic Range (max)
(V) |
RON
(Ω) |
RFLAT(ON)
(Ω) |
RFLAT(ON)
(Ω) |
BW
(MHz) |
IL(OFF)
(nA) |
QINJECTION
(pC) |
CON
(pF) |
Budgetary Price |
| min |
max |
max |
min |
max |
max |
max |
typ |
max |
max |
max |
See Notes |
| MAX14778 |
4:1 |
2 |
3 |
5.5 |
25 |
-25 |
25 |
50 |
1.5 |
0.003 |
0.003 |
75 |
200 |
1720 |
78 |
$4.43 @1k |
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See All Switches and Multiplexers (Low Voltage) (186)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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| Switches and Multiplexers (Mid Voltage) |
| Part Number |
Functions |
Config. |
Channels |
VSUPPLY (Single)
(V) |
VSUPPLY (Single)
(V) |
VSUPPLY (Dual)
(±V) |
RON
(Ω) |
BW
(MHz) |
IL(OFF)
(nA) |
QINJECTION
(pC) |
CON
(pF) |
Budgetary Price |
| min |
max |
max |
max |
max |
max |
See Notes |
| MAX14778 |
Mux |
4:1 |
2 |
3 |
5.5 |
25 |
1.5 |
75 |
200 |
1720 |
78 |
$4.43 @1k |
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See All Switches and Multiplexers (Mid Voltage) (305)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Typical Operating Circuit
Product Guides
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX14778EETP+
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N/A |
Future Product |
TQFN;20 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0009 (PDF)
Use pkgcode/variation: T2055+4*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX14778EETP+T
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N/A |
Future Product |
QFN;
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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| MAX14778ETP+
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Active |
TQFN;20 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0009 (PDF)
Use pkgcode/variation: T2055+4*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX14778ETP+T
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Active |
TQFN;20 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0009 (PDF)
Use pkgcode/variation: T2055+4*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Information Index
Document Ref.: 19-5929
Rev 0;
2011-07-08
This page last modified: 2011-12-20
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