ISL32179E Intersil Corporation, ISL32179E Datasheet

ISL32179E

Manufacturer Part Number

ISL32179E

Description

(ISL32172E - ISL32179E) RS-422 Transmitters

Manufacturer

Intersil Corporation

Datasheet

1.ISL32179E.pdf (20 pages)

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QUAD, ±16.5kV ESD Protected, 3.0V

to 5.5V, Low Power, RS-422 Transmitters

The Intersil ISL32x7xE are

Protected, 3.0V to 5.5V powered, QUAD transmitters for

balanced communication using the RS-422 standard. These

drivers have very low output leakage currents (

they present a low load to the RS-422 bus.

Driver (Tx) outputs are tri-statable, and incorporate a hot

plug feature to keep them disabled during power-up and

down. Versions are available with a common EN/EN

(‘172 pinout), a two channel EN12/EN34 (‘174 pinout), or a

versatile combination of individual and group channel

enables (see Table 1).

The ISL32372E, ISL32374E utilize slew rate limited drivers

which reduce EMI, and minimize reflections from improperly

terminated transmission lines, or from unterminated stubs in

multidrop and multipoint applications. Drivers on the other

versions are not limited, so they can achieve the 10Mbps or

32Mbps data rates. All versions are offered in Industrial and

Extended Industrial (-40°C to +125°C) temperature ranges.

A 50% smaller footprint (compared to the TSSOP) is

available with the ISL32179E’s QFN package. This device

also features a logic supply pin (V

points of the enable and DI inputs to be compatible with a

lower supply voltage in mixed voltage systems. Two speed

select pins allow the ISL32179E user to select from three

slew rate options for 460kbps, 10Mbps, or 32Mbps data

rates. Individual channel and group enable pins increase the

ISL32179E’s flexibility.

ISL32172E

ISL32272E

ISL32372E

ISL32174E

ISL32274E

ISL32374E

ISL32179E

NUMBER

PART

FUNCTION

4 Tx

DATA RATE

32, 10, 0.46

16.5kV IEC61000-4-2 ESD

(Mbps)

0.46

), that sets the switching

Data Sheet

SELECTABLE

SLEW-RATE

LIMITED?

YES

ISL32172E, ISL32272E, ISL32372E, ISL32174E,

10µA), so

TABLE 1. SUMMARY OF FEATURES

1-888-INTERSIL or 1-888-468-3774

PLUG?

HOT

YES

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

ISL32274E, ISL32374E, ISL32179E

YES

Features

• IEC61000 ESD Protection on RS-422 Outputs

• Wide Supply Range . . . . . . . . . . . . . . . . . . . 3.0V to 5.5V

• Specified for +125°C Operation

• Available in Industry Standard Pinouts (‘172/’174) or in a

• Logic Supply Pin (V

• User Selectable Data Rate (ISL32179E Only)

• Hot Plug - Tx Outputs Remain Three-state During

• Low Tx Leakage Allows > 256 Devices on the Bus

• High Data Rates . . . . . . . . . . . . . . . . . . . . . up to 32Mbps

• Low Quiescent Supply Current . . . . . . . . . . 0.8mA (Max)

• Current Limiting and Thermal Shutdown for Driver

• Tri-statable Tx Outputs

• 5V Tolerant Logic Inputs When V

• Pb-free (RoHS compliant)

Applications

• Telecom Equipment

• Motor Controllers / Encoders

• Programmable Logic controllers

• Industrial/Process Control Networks

PIN?

December 16, 2008

- Class 3 ESD Level on all Other Pins . . . . . . 12kV HBM

- High Machine Model ESD Level on all Pins . . . . . 700V

Space Saving QFN (ISL32179E) with Added Features

Systems (ISL32179E Only)

Power-up and Power-Down

- Low Shutdown Supply Current . . . . . . . . . . . . . . . 60µA

Overload Protection

EN12, EN34

All other trademarks mentioned are the property of their respective owners.

INDIV. AND

ENABLES

ENABLE

GROUP

EN, EN

TYPE

Intersil (and design) is a registered trademark of Intersil Americas Inc.

QUIESCENT

) Eases Operation in Mixed Supply

(mA)

SHUTDOWN?

LOW POWER

≤ 5V

YES

FN6824.0

. . ±

COUNT

16.5kV

Related parts for ISL32179E

ISL32179E Summary of contents

Page 1

... DI inputs to be compatible with a lower supply voltage in mixed voltage systems. Two speed select pins allow the ISL32179E user to select from three slew rate options for 460kbps, 10Mbps, or 32Mbps data rates. Individual channel and group enable pins increase the ISL32179E’ ...

Page 2

... ISL32172E, ISL32272E, ISL32372E, ISL32174E, ISL32274E, ISL32374E, ISL32179E Pinouts ISL32172E, ISL32272E, ISL32372E (16 LD N-SOIC, TSSOP) TOP VIEWS DI1 DI2 7 GND 8 www.DataSheet4U.com Ordering Information PART NUMBER (Notes 1, 2) ISL32172EFBZ ISL32172 EFBZ ISL32172EFVZ 32172 EFVZ ISL32172EIBZ ISL32172 EIBZ ...

Page 3

... NOTE: *Keep SPA = 1 for lowest current in SHDN. If using individual channel enables, and the SHDN mode, connect EN and for the lowest SHDN current. ISL32179E enters SHDN when Z 0/1 1/0 0/1 1/0 SHDNEN = 1 and all channels are disabled Tri-state. 1 1/0 ...

Page 4

... Note), connect ENX to V SHDNEN Low power SHDN mode enable. A high level allows the ISL32179E to enter a low power mode when all channels are disabled. A low level prevents the device from entering the low power mode. (ISL32179E only) DIx Driver input. A low on DI forces the corresponding channel’ ...

Page 5

... ISL32172E, ISL32272E, ISL32372E, ISL32174E, ISL32274E, ISL32374E, ISL32179E Typical Operating Circuits ( Channels Shown) +3. ISL32x73E GND 8 +3. ISL32x75E RO1 EN12 GND 8 NETWORK WITH V 1.8V +3. www.DataSheet4U.com SHDNEN LOGIC ISL32x77E 15 EN DEVICE 4 EN (µP, ASIC, ...

Page 6

... ISL32172E, ISL32272E, ISL32372E, ISL32174E, ISL32274E, ISL32374E, ISL32179E Absolute Maximum Ratings V to GND GND (ISL32179E Only -0. Input Voltages DI, EN (all varieties -0. Output Voltages -0. Output Current ≤ 125° 100mA Y, Z (Per Output, Continuous ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . See Specification Table CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time ...

Page 7

... ISL32172E, ISL32272E, ISL32372E, ISL32174E, ISL32274E, ISL32374E, ISL32179E Electrical Specifications Test Conditions PARAMETER Logic Input Current Output Leakage Current (Y, Z) Driver Short-Circuit Current High or Low O Thermal Shutdown Threshold SUPPLY CURRENT No-Load Supply Current Shutdown Supply Current ESD PERFORMANCE RS-422 Pins (Y, Z) ...

Page 8

... For ISL32179E, keep SHDNEN low to avoid entering SHDN. 13. Keep SHDNEN high to enter SHDN when all transmitters are disabled (ISL32179E only). 14. Logic Pins are the DIs, the enable variants, and SHDNEN. 15. Only one of the SPX pins low, plus EN1-EN4 low with EN and EN high low and EN high with EN1-EN4 high. ...

Page 9

... ISL32172E, ISL32272E, ISL32372E, ISL32174E, ISL32274E, ISL32374E, ISL32179E Test Circuits and Waveforms SIGNAL GENERATOR FIGURE 2A. TEST CIRCUIT FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES EN www.DataSheet4U.com SIGNAL Y GENERATOR PARAMETER OUTPUT (Note 12) Y (Note 12) ...

Page 10

... CC resistor between the input(s) and V will flow if the input’s ESD protection starts conducting. The ISL32179E has the most flexible enable scheme. Its six enable pins allow for group, paired, or individual channel enable control. Figure 5 details the ISL32179E’s internal enable logic. To utilize a group enable function, connect all the ENx pins high, and handle the EN and EN pins as described in the previous paragraph ...

Page 11

... ISL32172E, ISL32272E, ISL32372E, ISL32174E, ISL32274E, ISL32374E, ISL32179E µcontrollers, and today most of these devices use power supplies significantly lower than 3.3V. Thus, the logic device’s low V might not exceed the V OH powered DI or enable input. Connecting the V power supply of the logic device (as shown in Figure 6) reduces the DI and enable input switching points to values compatible with the logic device’ ...

Page 12

... ISL32172E, ISL32272E, ISL32372E, ISL32174E, ISL32274E, ISL32374E, ISL32179E discharge. The result is a more repeatable and predictable test, but equipment limits prevent testing devices at voltages higher than ±9kV. Devices in this family survive ±9kV contact discharges on the RS-422 pins. Data Rate, Cables, and Terminations RS-422 is intended for network lengths up to 4000’ ...

Page 13

... ISL32172E, ISL32272E, ISL32372E, ISL32174E, ISL32274E, ISL32374E, ISL32179E Typical Performance Curves 120 +25°C 100 +25°C +85°C 80 +125° 0.5 1.0 1 OUTPUT VOLTAGE (V) FIGURE 9. DRIVER SINGLE-ENDED ( OUTPUT CURRENT vs OUTPUT VOLTAGE 500 450 400 350 300 250 V = 3.3V CC 200 ...

Page 14

... ISL32172E, ISL32272E, ISL32372E, ISL32174E, ISL32274E, ISL32374E, ISL32179E Typical Performance Curves DDLH DDHL DDLH 11 t DDHL 10 -40 -25 - TEMPERATURE (°C) FIGURE 15. DRIVER DIFFERENTIAL PROPAGATION DELAY vs TEMPERATURE (ISL32272E, ISL32274E, ISL32179E, 10Mbps OPTION DDLH DDHL ...

Page 15

... ISL32172E, ISL32272E, ISL32372E, ISL32174E, ISL32274E, ISL32374E, ISL32179E Typical Performance Curves 5 TIME (40ns/DIV) FIGURE 21. DRIVER WAVEFORMS, LOW TO HIGH (ISL32372E, ISL32374E, ISL32179E 3.3V 1. 3 TIME (10ns/DIV) www ...

Page 16

... ISL32172E, ISL32272E, ISL32372E, ISL32174E, ISL32274E, ISL32374E, ISL32179E Typical Performance Curves V = 3.3V 1. 3 TIME (10ns/DIV) FIGURE 27. DRIVER WAVEFORMS, LOW TO HIGH (ISL32172E, ISL32174E, ISL32179E 5V 1. 5 www.DataSheet4U.com -4 -5 TIME (10ns/DIV) FIGURE 29 ...

Page 17

... ISL32172E, ISL32272E, ISL32372E, ISL32174E, ISL32274E, ISL32374E, ISL32179E Typical Performance Curves DRIVER + CABLE DELAY 3.0 1 -1.5 +85°C -3.0 3.0 1 -1.5 +125°C -3.0 TIME (80ns/DIV) FIGURE 31. WORST CASE (NEGATIVE) FIVE PULSE DRIVER WAVEFORMS DRIVING 200 FEET (62m) OF CAT5 CABLE (SINGLE TERMINATED WITH 121Ω) ...

Page 18

... ISL32172E, ISL32272E, ISL32372E, ISL32174E, ISL32274E, ISL32374E, ISL32179E Small Outline Plastic Packages (SOIC) N INDEX H AREA E - SEATING PLANE - - 0.25(0.010 NOTES: 1. Symbols are defined in the “MO Series Symbol List” in Section 2.2 of Publication Number 95. 2. Dimensioning and tolerancing per ANSI Y14.5M-1982. ...

Page 19

... ISL32172E, ISL32272E, ISL32372E, ISL32174E, ISL32274E, ISL32374E, ISL32179E Package Outline Drawing L24.4x4C 24 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 2, 10/06 4.00 PIN 1 INDEX AREA (4X) 0.15 TOP VIEW ( TYP ) ( www.DataSheet4U.com TYPICAL RECOMMENDED LAND PATTERN 20X 24X ± BOTTOM VIEW ± ...

Page 20

... ISL32172E, ISL32272E, ISL32372E, ISL32174E, ISL32274E, ISL32374E, ISL32179E Thin Shrink Small Outline Package Family (TSSOP (N/2)+ TOP VIEW e C SEATING PLANE b 0. LEADS SIDE VIEW SEE DETAIL “X” c END VIEW www.DataSheet4U.com DETAIL X All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. ...

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