DS1776QML Datasheet, PDF (1/16 Pages) Texas Instruments – Pi-Bus Transceiver

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DS1776QML
SNOSC82B – AUGUST 2012 – REVISED JUNE 2015
DS1776QML Pi-Bus Transceiver
1 Features
•1 Similar to BTL
• Low Power I_CCL = 41 mA max
• B Output Controlled Ramp Rate
• B input Noise Immunity, Typically 4 ns
• Pin and Function Compatible with Signetics
54F776
2 Description
The DS1776 is an octal PI-bus Transceiver. The A to
B path is latched. B outputs are open collector with
series Schottky diode, ensuring minimum B output
loading. B outputs also have ramped rise and fall
times (2.5 ns typical), ensuring minimum PI-bus
ringing. B inputs have glitch rejection circuitry, 4 ns
typical.
Designed using Texas Instruments's Bi-CMOS
process for both low operating and disabled power.
AC performance is optimized for the PI-Bus inter-
operability requirements.
The DS1776 is an octal latched transceiver and is
intended to provide the electrical interface to a high
performance wired-or bus. This bus has a loaded
characteristic impedance range of 20Ω to 50Ω and is
terminated on each end with a 30Ω to 40Ω resistor.
The DS1776 is an octal bidirectional transceiver with
open collector B and TRI-STATE A port output
drivers. A latch function is provided for the A port
signals. The B port output driver is designed to sink
100 mA from 2V and features a controlled linear ramp
to minimize crosstalk and ringing on the bus.
A separate high level control voltage (V_X) is provided
to prevent the A side output high level from
exceeding future high density processor supply
voltage levels. For 5V systems, V_X is tied to V_CC.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DS1776QML
LCCC (FK)
11.43 mm x 11.43 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Logic Symbol
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.