ISL32172EIBZ-T Intersil, ISL32172EIBZ-T Datasheet - Page 4

• Manufacturer Part Number: ISL32172EIBZ-T
• Description: IC XMITTER ESD RS422 LP 16-SOIC
• Manufacturer: Intersil
• Type: Transmitterr

Specifications of ISL32172EIBZ-T

• Number Of Drivers/receivers: 4/0
• Protocol: RS422
• Voltage - Supply: 3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Pin Descriptions
NOTE: Unused EN pins of any type should not be left floating, even though they have internal pull-ups.
SPA, SPB Speed select inputs that are internally pulled-high. See ISL32179E Truth Table on page 3. (ISL32179E only)
SHDNEN
EN, EN
EN12,
EN34
GND
ENx
V
PIN
DIx
Yx
Zx
V
CC
L
ISL32172E, ISL32272E, ISL32372E, ISL32174E, ISL32274E, ISL32374E, ISL32179E
Group driver output enables, that are internally pulled high to V
high OR EN low, and the outputs are high impedance when EN is low AND EN is high (i.e., if using only the active high EN, connect
EN directly to V
by connecting all the ENX pins to V
function isn’t required (see Note), connect EN to V
Paired driver output enables, that are internally pulled high to V
outputs (Y and Z). Driving EN12 (EN34) low disables Channel 1 and 2 (3 and 4) outputs. If the driver enable function isn’t required
(see Note), connect EN12 and EN34 to V
Individual driver output enables that are internally pulled high to V
channel X outputs (Y and Z). Driving ENX low disables the Channel X outputs, regardless of the states of EN and EN. Connect both
EN and EN to V
isn’t required (see Note), connect ENX to V
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)
Driver input. A low on DI forces the corresponding channel’s output Y low and output Z high. Similarly, a high on DI forces output Y
high and output Z low.
Ground connection. This is also the potential of the QFN thermal pad.
±16.5kV IEC61000-4-2 ESD Protected RS-422 level, noninverting transmitter output.
±16.5kV IEC61000-4-2 ESD Protected RS-422 level, inverting transmitter output.
System power supply input (3.0V to 5.5V). On devices with a V
Logic power supply input. Connecting the V
interfacing with the ISL32179E tailors its logic pin (DI, EN (all varieties), SHDNEN, and SP) V
the lower supply voltage. Power-up this supply after V
CC
CC
or V
for the lowest SHDN current if utilizing SHDN mode (see SHDNEN below). If the individual driver enable function
4
L
; if using only the active low EN, connect EN directly to GND). On the ISL32179E accomplish group enable
CC
or V
CC
L
CC
L
, and then use the EN or EN pin as previously described. If the group driver enable
. (ISL32x74E only)
pin to the lower voltage power supply of a logic device (e.g., UART or µcontroller)
. (ISL32179E only)
CC
, or connect EN to GND. (ISL32x72E and ISL32179E only)
CC
, and keep V
FUNCTION
CC
L
CC
CC
pin, power-up V
. All ISL32x72E driver outputs, Y and Z, are enabled by driving EN
. Driving EN12 (EN34) high enables Channel 1 and 2 (3 and 4)
. Forcing ENx high (along with EN high OR EN low) enables the
L
≤ V
CC
. (ISL32179E only)
CC
first.
IL
/V
IH
levels to values compatible with
December 16, 2008
FN6824.0