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PDF MAX14783E Data sheet ( Hoja de datos )
| Número de pieza | MAX14783E | |
| Descripción | High-Speed 3.3V/5V RS-485/RS-422 Transceiver | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX14783E (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
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MAX14783E
EVALUATION KIT AVAILABLE
High-Speed 3.3V/5V RS-485/RS-422 Transceiver
with ±35kV HBM ESD Protection
General Description
The MAX14783E is a half-duplex RS-485/422 transceiver
that operates at either 3.3V or 5V rails with high ±35kV
ESD performance and up to 42Mbps data rate. The
device is optimized for high speeds over extended cable
runs while maximizing tolerance to noise.
The MAX14783E is available in 8-pin µMAX®, 8-pin SO,
and 8-pin TDFN-EP packages. The device in the TDFN-EP
package operates over the -40°C to +125°C temperature
range. The MAX14783E in the μMAX and SO packages
operates over the -40°C to +85°C and -40°C to +125°C
temperature ranges.
Applications
● Motion Controllers
● Field Bus Networks
● Encoder Interfaces
● Backplane Busses
Benefits and Features
● Integrated Protection Increases Robustness
• High ESD Protection
±35kV HBM ESD per JEDEC JS-001-2012
±20kV Air Gap per IEC 61000-4-2
±12kV Contact ESD per IEC 61000-4-2
• Short-Circuit Protected Outputs
• True Fail-Safe Receiver Prevents False Transition
on Receiver Input Short or Open Events
• Hot-Swap Capability Eliminates False Transitions
During Power-Up or Hot Insertion
● 3V to 5.5V Supply Voltage Range
● High-Speed Data Rates up to 42Mbps
● -40°C to +125°C Operating Temperature
● Allows Up to 32 Transceivers on the Bus
● Low 10µA (max) Shutdown Current for Lower Power
Consumption
Ordering Information appears at end of data sheet.
Functional Diagram
RO
RE
DE
DI
VCC
MAX14783E
R
SHUTDOWN
D
B
A
GND
µMAX is a registered trademark of Maxim Integrated Products, Inc,.
19-6734; Rev 1; 1/15
1 page  
MAX14783E
High-Speed 3.3V/5V RS-485/RS-422 Transceiver
with ±35kV HBM ESD Protection
Switching Characteristics MAX14783E (continued)
(VCC = +3V to +5.5V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at VCC = +5V and TA = +25°C.) (Notes 2, 3, 5)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Driver Enable from Shutdown to
Output Low
Time to Shutdown
RECEIVER
Receiver Propagation Delay
Receiver Output Skew
Maximum Data Rate
Receiver Enable to Output High
tDHZ(SHDN)
RL = 110Ω, CL = 15pF,
Figures 4 and 5 (Note 7)
tSHDN
(Note 7)
tRPLH
tRPHL
tRSKEW
DRMAX
tRZH
CL = 15pF, Figures 6 and 7
CL = 15pF, Figures 6 and 7
(Note 6)
RL = 1kΩ, CL = 15pF,
Figure 8 (Note 7)
50
42
6 µs
800 ns
25
ns
25
2 ns
Mbps
30 ns
Receiver Enable to Output Low
Receiver Disable Time from Low
Receiver Disable Time from High
Receiver Enable from Shutdown to
Output High
tRZL
tRLZ
tRHZ
tRLZ(SHDN)
RL = 1kΩ, CL = 15pF,
Figure 8 (Note 7)
RL = 1kΩ, CL = 15pF, Figure 8
RL = 1kΩ, CL = 15pF, Figure 8
RL = 1kΩ, CL = 15pF,
Figure 8 (Note 7)
30 ns
30 ns
30 ns
6 µs
Receiver Enable from Shutdown to
Output Low
tRHZ(SHDN)
RL = 1kΩ, CL = 15pF,
Figure 8 (Note 7)
6 µs
Time to Shutdown
tSHDN
(Note 7)
50 800 ns
Note 2: All devices 100% production tested at TA = +25°C. Specifications over temperature are guaranteed by design.
Note 3: All currents into the device are positive; all currents out of the device are negative. All voltages are referenced to ground,
unless otherwise noted.
Note 4: ΔVOD and ΔVOC are the changes in VOD and VOC, respectively, when the DI input changes state.
Note 5: Capacitive load includes test probe and fixture capacitance.
Note 6: Guaranteed by design; not production tested.
Note 7: The timing parameter refers to the driver or receiver enable delay, when the device has exited the initial hot-swap protect
state and is in normal operating mode.
Note 8: Shutdown is enabled by driving RE high and DE low. The device is guaranteed to have entered shutdown after tSHDN has
elapsed.
www.maximintegrated.com
Maxim Integrated │ 5
5 Page 
MAX14783E
High-Speed 3.3V/5V RS-485/RS-422 Transceiver
with ±35kV HBM ESD Protection
Pin Configuration
VCC B
87
A GND
65
TOP VIEW
RO 1 +
8 VCC
MAX14783E
RE 2
MAX14783E
7B
DE 3
6A
+ *EP
1 234
RO RE DE DI
TDFN-EP
*CONNECT EXPOSED PAD (EP) TO GND
Pin Description
DI 4
DRIVER PROPAGATION DELAY
vs. TEMPERATURE µMAX/SO
30
RL = 54Ω
CL = 50pF
25
tDPHL, VCC = 3.3V
20
tDPLH, VCC = 3.3V
15
5 GND
PIN NAME
10 FUNCTION
1
RO
Receiver Output. See Functi5on TatDbPLleH,sV.CC = 5V
tDPHL, VCC = 5V
2
RE
Receiver Output Enable. Drive RE low to enable RO. Drive RE high to disable the receiver. RO is high
impedance when RE is high.0 Drive RE high and pull DE low to enter low-power shutdown mode.
-40 -25 -10 5 20 35 50 65 80 95 110 125
Driver Output Enable. Drive DE high to eTnEMaPbEleRAtThUeREd(r°iCv)er. Drive DE low to disable the driver. Driver
3 DE outputs are high-impedance when the driver is disabled. Drive RE high and pull DE low to enter low-
power shutdown mode.
4
DI
Driver Input. With DE high, a low on DI forces the A output low and the B output high. Similarly, a high
on DI forces the A output high and B output low.
5
GND
Ground
6 A Noninverting RS-485/RS-422 Receiver Input and Driver Output
7 B Inverting RS-485/RS-422 Receiver Input and Driver Output
8 VCC Positive Supply Voltage Input. Bypass VCC with a 0.1µF ceramic capacitor to ground.
— EP Exposed Pad (TDFN only). Connect EP to GND.
www.maximintegrated.com
Maxim Integrated │ 11
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet MAX14783E.PDF ] | |
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