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VMIVME-2120
VMIC

12090 South Memorial Parkway Huntsville, Alabama 35803-3308
1
64 bits of high-voltage outputs High-current drivers (600 mA sink) Automatic surge current shutdown protection option Thermal shutdown protection option for driving incandescent or inductive
loads High breakdown voltage (55 V) Output clamp diodes for inductive yback protection Compatible with Intelligent I/O Controllers Built-in-Test logic for fault isolation High reliability DIN-type I/O connectors 8-, 16-, or 32-bit transfers Double Eurocard form factor Separate board address decoding for control and data registers Optional pull-up resistors for electronic switch outputs Optional TTL outputs Front panel with fail LED

FUNCTIONAL CHARACTERISTICS
Compatibility:

VMEbus specification compatible.
Double height form factor.

Output Connector Type:

Dual 64-pin connectors -
DIN 41612

Output Organization:

Eight ports, eight bits wide.
Addressable to any address within short supervisory or
short nonprivileged I/O map. Control and Status
Register (CSR) address is independently selectable.

Address Modifier Codes:

Jumper-selectable for
short supervisory or short nonprivileged I/O access.
Factory configured for short supervisory I/O access.

Addressing Scheme:

Eight ports individually
addressable on 8-, 16-, or 32-bit boundaries. The
separate board address decoder for the CSR allows
addresses for hardware control to be grouped for
improved software efficiency.

Data Transfer Bus:

A16: D8, D16, D32

Built-in-Test:

This product supports off-line and
real-time fault detection and isolation. The off-line
mode is enabled by executing a write to the CSR to set
the Test Mode Bit. All outputs are OFF with the Test
Mode enabled.

Fail LED:

A Fail LED is provided that is illuminated
at powerup and extinguished under program control
upon successful diagnostic execution.

Output Drivers:

This product may be ordered with a
variety of output driver options as shown in the
Ordering Options. As the Ordering Options show, the
board can be manufactured with (1) automatic surge
current shutdown protection, (2) no shutdown
protection, or (3) thermal shutdown protection for
driving incandescent lamps. A detailed description is

VMIVME-2120

64-bit High-Voltage Digital
Output with Built-in-Test

Ordering Options

June 16, 1999 800-002120-000 H

A
B
C D
E
F
VMIVME-2120

A = Data Polarity

1 = Positive True
2 = Negative True

B = Output Type

0 = Logic Level (TTL Compatible), Automatic Surge Current Shutdown Protection
1 = High-Voltage Level (Open Collector), Automatic Surge Current Shutdown
Protection

(1)


2 = Electronic Switch Option, Automatic Surge Current Shutdown Protection
3 = Logic Level (TTL Compatible), No Shutdown Protection
4 = High-Voltage Level (Open Collector), No Shutdown Protection

(1)

5 = Electronic Switch Option, No Shutdown Protection
6 = Logic Level (TTL Compatible), Thermal Shutdown Protection

(2)

7 = High-Voltage Level (Open Collector), Thermal Shutdown Protection

(1)(2)

8 = Electronic Switch Option, Thermal Shutdown Protection

(2)

C = Pull-Up Resistors; Output Voltage Range

(3)

0 = 270

, 5 V Range (6 V Absolute Maximum)
1 = 1.5 K, 12 V Range (14 V Absolute Maximum)
2 = 6.8 K, 24 V Range (30 V Absolute Maximum)
3 = 27 K, 48 V Range (55 V Absolute Maximum)
4 = 560

, 5 V Range (8 V Absolute Maximum)

(4)

5 = No Pull-Up Resistor Installed (55 V Absolute Maximum)

Connector Data

Compatible Cable Connector
Panduit No. 120-964-435

(5)

PC Board Connector
Panduit No. 120-964-033A
Strain Relief Device
Panduit No. 100-000-072

Notes

1. No pull-up resistors installed, C option field must equal 5.
2. Required for driving incandescent lamps without external warming or current limiting
resistors.
3. The absolute maximum output voltage is determined by the power dissipation of the
pull-up resistor (0.12 W maximum) and by the output driver. The maximum voltage
with no latch-up is 35 V. Please note the open-collector options (

output types

1, 4,
and 7) take precedence (that is, no pull-up resistor is installed for those types
regardless of

output voltage

range selected).
4. TTL-compatible option, used with output type

Logic Level

0, 3, and 6.
5. Panduit is also known as ITW/Pancon.

For Ordering Information, Call:
1-800-322-3616 or 1-256-880-0444 FAX (256) 882-0859
E-mail: info@vmic.com Web Address: www.vmic.com
Copyright © January 1986 by VMIC
Specifications subject to change without notice.
VMIVME-2120

2
For Ordering Information, Call: 1-800-322-3616 or 1-256-880-0444 FAX (256) 882-0859

provided on page 6 for options (1) and (2). The thermal
shutdown protection for driving incandescent lamps (3)
is described on page 6.

Output Features:

The high-current driver (600 mA
sink) outputs are designed to drive incandescent lamps
and inductive loads without external current limiting or
warming resistors. Due to cold filament inrush currents,
it is recommended that only one lamp be driven by the
output driver. However, if more than one bulb must be
driven by a single wire, then another driver must be
connected in parallel. If more than one bulb must be
driven by a single output, it is recommended the
VMIVME-2131 (current source/sink) or the
VMIVME-2130 (current source only) be used if the
application will allow. The output drivers of the
VMIVME-2131 and VMIVME-2130 will not
necessarily support all of the VMIVME-2120 current
sink (open collector) applications. In addition to this, the
VMIVME-2120 and VMIVME-213x have dissimilar
power requirements.

PHYSICAL/ENVIRONMENTAL
Temperature:



0 to 55

°

C, operating
-20 to +85 °C, storage

Humidity:

20 to 80 percent relative, noncondensing

Cooling:

Forced air convection

Dimensions:



Double Eurocard 160 mm x
233.35 mm

Power Requirements:

+5 V at 3.786 A (maximum)
1.8 A (typical)
1.8 A typical at 5 VDC
3.786 A maximum

MTBF:

96,611 hours (217E)

APPLICATIONS



Relay drivers
High-current, high-voltage drivers
Triac drivers
Hammer drivers
Lamp drivers
Fiber optics LED drivers
LED drivers
Stepping motor drivers
Solenoid drivers

POSITIVE/NEGATIVE TRUE ORDERING
INFORMATION

This board may be ordered with
positive or negative true I/O options. The data conversion
(inversion) is determined by the selection of data latches
which control the output driver transistors.
A positive true output option causes a VMEbus logical

one

to turn the corresponding output transistor ON, which
supplies the user with

zero

volts.
The negative true output option causes a VMEbus
logical

one

to turn the corresponding output transistor OFF,
which supplies the user with an open circuit for
open-collector output circuits or with a high for electronic
switch type output circuits.
Boards manufactured with the negative true TTL option
are designed such that a VMEbus logical

one

causes the
output driver to produce a logic

one

(high) to the user.
Conversely, the positive true TTL option is designed
such that a VMEbus logical

one

causes the output driver to
produce a logic

zero

(low) to the user.
VMIVME-2120

VMIC

12090 South Memorial Parkway Huntsville, Alabama 35803-3308
3

ADDRESS BUS
DATA
I/O
REG
CSR
OUTPUT
DRIVERS
OUTPUT
DRIVERS
OUTPUT
DRIVERS
OUTPUT
DRIVERS
16
16
16
16
TEST
MODE
FAIL
LED
64-pin
OUTPUT
CONN.
P3
64-pin
OUTPUT
CONN.
P4
DATA
I/O
REG
DATA
I/O
REG
DATA
I/O
REG
OPTIONAL
PULL-UP
RESISTORS
VMEbus
FOUNDATION
LOGIC
DATA REG
ADDRESS
LOGIC
DATA REG
ADDRESS
SWITCHES
CSR
ADDRESS
LOGIC
CSR
ADDRESS
SWITCHES
INTERNAL DATA BUS
VMEbus

Figure 1. VMIVME-2120 Functional Block Diagram
VMIVME-2120

4
For Ordering Information, Call: 1-800-322-3616 or 1-256-880-0444 FAX (256) 882-0859

EN
V
PULL-UP VOLTAGE
FLYBACK
EMF
PROTECTION
DIODE
OPTIONAL
PULL-UP
RESISTOR
ON-BOARD
+5 V
JC
EXT V
USER
VOLTAGE
P3 OR P4
USER
LOAD
K
IN
TO FOUR OTHER CIRCUITS
OUT
INTERNAL
CASE GND
+5 V
USER GND
DS3668
56 V
**
CC
GND

GENERAL DESCRIPTION

The DS3668*
quad-peripheral driver is designed for those applications
(output options 0 through 2) where low operating power, high
breakdown voltage, high output current, and low output ON
voltage are required. Unlike most peripheral drivers, a unique
fault protection is incorporated on each output. When the load
current exceeds 1.0 A (approximately) on any output for more
than a built-in delay time, nominally 25 ms, that output will be
shut off by its protection circuitry with no effect on other
outputs. This condition will prevail until that protection
circuitry is reset by toggling the corresponding input or the
enable pin low for at least 0.5 ms. The 25 ms built-in delay is
provided to ensure the protection circuitry is not triggered by
turn-on surge currents associated with certain kinds of loads.
The outputs are capable of sinking 600 mA each and
offer a 55 V breakdown. However, for inductive loads, the