概述
The MAX317/MAX318/MAX319 are precision, CMOS, monolithic analog switches. The single-pole single-throw (SPST) MAX317 is normally closed (NC), the SPST MAX318 is normally open (NO), and the single-pole double-throw (SPDT) MAX319 has one normally open and one normally closed switch. All three parts offer low on resistance (less than 35
), guaranteed to match within 2 between channels and to remain flat over the analog signal range (D3 max). They also offer low leakage (less than 250pA at +25°C and less than 6nA at +85°C) and fast switching (turn-on time less than 175ns and turn-off time less than 145ns).
The MAX317/MAX318/MAX319 are fabricated with Maxim's new improved silicon-gate process. Design improvements guarantee extremely low charge injection (10pC), low power consumption (35µW), and electrostatic discharge (ESD) greater than ±2000V. The 44V maximum breakdown voltage allows rail-to-rail analog signal handling capability.
| Key Specifications: Switches and Multiplexers |
| Part Number |
Configuration |
Number of Channels |
Normally (Open/Closed) |
VSUPPLY, Single (min) (V) |
VSUPPLY, Single (max) (V) |
VSUPPLY, Dual (min) (±V) |
VSUPPLY, Dual (max) (±V) |
RON (max) (Ω) |
IL (OFF) (max) (nA) |
tON (max) (nS) |
tOFF (max) (nS) |
QINJECTION (pC) |
CON (pF) |
COFF (pF) |
VISO, Off-Isolation (dB) |
VCT, Crosstalk (dB) |
ΔRON (max) (Ω) |
RFLAT(ON) (max) (Ω) |
Package |
Package Type |
RoHS Available |
Price |
| MAX317 |
SPST |
1 |
Closed |
10.0 |
30.0 |
4.5 |
20.0 |
45.0 |
0.25 |
175 |
145 |
10.0 |
30.0 |
8.0 |
68 |
85 |
2.0 |
3.0 |
8/PDIP
8/SOIC |
PDIP SOIC |
Yes |
$0.91 @ 1k |
| MAX318 |
SPST |
Open |
45.0 |
30.0 |
8/PDIP
8/SOIC |
$0.91 @ 1k |
| MAX319 |
SPDT |
- |
35.0 |
35.0 |
8/PDIP
8/SOIC |
$1.13 @ 1k |
| 注释 |
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Improved DG417, low RON match and flatness (MAX317) |
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Improved DG418, low RON match and flatness (MAX318) |
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Improved DG419, low RON match and flatness (MAX319) | |
