HI-4853H Datasheet, PDF (1/14 Pages) Holt Integrated Circuits – 3.3/5V, High-Speed RS-485/422 Transceivers with

February 2013
3.3/5V, High-Speed RS-485/422 Transceivers with
High Temperature Range
GENERAL DESCRIPTION
The HI-485xH devices are high-speed slew-rate controlled TIA-485/
TIA-422-B and ISO 8482:1993 compliant transceivers with
extended temperature ranges of -55˚C to 175˚C for plastic
packages and -55˚C to 200˚C for the ceramic CERDIP-8 package.
The devices can operate over an extended supply (3.15V to 5.5V)
and extended receiver common-mode range for high temperature
and industrial control applications. The receiver input common-
mode range of [-12, 15]V and ±20V for the half and full duplex
configurations respectively, is valid over the full supply and
temperature specification. The HI-4853H has a half-duplex
configuration, and the HI-4854H and HI-4855H are full-duplex. Slew
rates are optimized for data rates below 25Mbps. The drivers slew-
rate control and pre-emphasis reduces high-frequency components
in the output signal transitions and also compensates for
impedance mismatch. These features provide optimum EMI and
jitter performance, essential in EMI sensitive environments and
high-integrity data link applications such as in aerospace and
industrial controls.
The devices deliver at least ± 1.50V (VDD=3.15V), and ± 2.00V
(VDD= 4.5V) output levels at an extended temperature range of
-55°C to +200°C into a differential load of 54Ω and 50pF.
The receiver offers true Fail-Safe operation, providing a
guaranteed logic high on RO when the bus is open-circuit, short-
circuit, or idle (terminated but not driven). The receiver’s worst
case minimum input resistance is at least 70KΩ at 200^oC.
APPLICATIONS
Extended Temperature Range RS-485/422 Networks
Oil exploration / down-hole drilling
Process Control and Factory Automation
EMI Emission Sensitive Avionics
Industrial Field Bus Networks
Networks requiring extended common-mode range
Miniature Munitions Stores Interface (MMSI / EBR-1553)
Device Selection Table
Part Half/Full Data Rate
Number Duplex (Mbps)*
Package
HI-4853 Half
≤ 20.0
8-pin SOIC
HI-4854 Full
HI-4855 Full
≤ 20.0
≤ 20.0
8-pin SOIC
14-pin SOIC
16-pin QFN
* For RS-485 Transceivers optimized for data rates up
to 5Mbps please refer to the HI-4850 data sheet.
FEATURES
Extended Temperature Ranges -55°C to 175°C (plastic
packages) and -55°C to 200°C (ceramic CERDIP-8 package)
Slew Rate Control and Pre-Emphasis for superior EMI
Extended Power Supply Operating Range 3.15V to 5.5V
Extended Receiver Common-Mode Range:
-12.0V to 15.0V Half-Duplex
±20V Full-Duplex
ESD Protection
±16KV HBM (Bus Pins)
±8KV HBM (Logic Pins)
20 Mbps Data Rate up to 50 ft. CAT-5 UTP
12 Mbps Data Rate up to 1000 ft. CAT-5 UTP
Current Limiting Protection
Industry Standard 75176 Pin-out
PIN CONFIGURATIONS ^{(Top Views)}
RO - 1
RE - 2
DE - 3
DI - 4
HI-4853PSHF
HI-4853CRH
8 - VDD
7-B
6-A
5 - GND
VDD - 1
RO - 2
DI - 3
GND - 4
HI-4854PSHF
HI-4854CRH
8-A
7-B
6-Z
5-Y
8-Pin Plastic SOIC package (Narrow Body)
& 8-Pin Ceramic CERDIP
-1
RO 2
RE 3
DE 4
DI 5
GND 6
GND 7
HI-4855PSHF
14 VDD
13 -
12 A
11 B
10 Z
9Y
8-
14-Pin Plastic SOIC package (Narrow Body)
HOLT INTEGRATED CIRCUITS
(DS4853H Rev. A)
www.holtic.com
02/13