Isolated Output

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Applies to PC1628 Grablink Duo, PC1630 Coaxlink Mono, PC1631 Coaxlink Duo, PC1632 Coaxlink Quad, PC1633 Coaxlink Quad G3, PC1633-LH Coaxlink Quad G3 LH, PC1635 Coaxlink Quad G3 DF, PC1637 Coaxlink Quad 3D-LLE, PC3602 Coaxlink Octo, PC3603 Coaxlink Quad CXP-12, PC3603-4 Coaxlink Quad CXP-12, PC3620 Coaxlink Quad CXP-12 JPEG, PC3620-4 Coaxlink Quad CXP-12 JPEG, PC3621 Coaxlink Mono CXP-12, PC3621-LH Coaxlink Mono CXP-12 LH, PC3622 Coaxlink Duo CXP-12, PC3622-LH Coaxlink Duo CXP-12 LH, PC3623 Coaxlink Quad CXP-12 Value, PC3624 Coaxlink Quad CXP-12 DF, PC3625 Coaxlink QSFP+, PC3633 Coaxlink Quad CXP-12 3D-LLE, PC3300 HD26F I/O module for Coaxlink Duo PCIe/104, PC3614 HD26F I/O Extension Module - Standard I/O Set and PC3618 HD26F I/O Extension Module - Fast I/O.

PC1628 Grablink Duo PC1630 Coaxlink Mono PC1631 Coaxlink Duo PC1632 Coaxlink Quad PC1633 Coaxlink Quad G3 PC1633-LH Coaxlink Quad G3 LH PC1635 Coaxlink Quad G3 DF PC1637 Coaxlink Quad 3D-LLE PC3602 Coaxlink Octo PC3603 Coaxlink Quad CXP-12 PC3603-4 Coaxlink Quad CXP-12 PC3620 Coaxlink Quad CXP-12 JPEG PC3620-4 Coaxlink Quad CXP-12 JPEG PC3621 Coaxlink Mono CXP-12 PC3621-LH Coaxlink Mono CXP-12 LH PC3622 Coaxlink Duo CXP-12 PC3622-LH Coaxlink Duo CXP-12 LH PC3623 Coaxlink Quad CXP-12 Value PC3624 Coaxlink Quad CXP-12 DF PC3625 Coaxlink QSFP+ PC3633 Coaxlink Quad CXP-12 3D-LLE PC3300 HD26F I/O module for Coaxlink Duo PCIe/104 PC3614 HD26F I/O Extension Module - Standard I/O Set PC3618 HD26F I/O Extension Module - Fast I/O

Isolated Output Simplified schematic

The output port implements an isolated contact output.

DC characteristics

Parameter	Conditions	Min.	Max.	Units
Current			100	mA
Differential voltage	Open state	-30	30	V
	Closed state @ 1 mA		0.4	V
	Closed state @ 100 mA		1.0	V

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The output port in the closed state has no current limiter, the user circuit must be designed to avoid excessive currents that could destroy the output port.

□

The output port remains in the OFF-state until it is under control of the application.

AC characteristics

Parameter	Conditions	Min.	Max.	Units
Pulse rate	See "Test conditions" below	0	100	kHz
Turn-on time			5	µs
Turn-off time			5	µs

Test conditions

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LVTTL signaling (0.4V-2.4V) at IOUT output. Tr/Tf is measured between 0.4V & 2.4V.

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Signal span of 5V. The receiver is supposed to be TTL 5V Compliant (like, for instance, our TTLIO). The span of 5V is achieved by a pull-up/pull-down ratio of about 1.2 (for instance 220R/180R or 470R/390R) supplied by 12VIO.

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R-R divider must be strong enough to maintain good fall time (Rdown must be low enough). A R-R divider current of 10 mA is the minimum to get good results.

Performance above 70 kHz

Inter-symbol Interface (ISI) appears for pulse rates higher than 70 KHz.

The ISI adds an extra delay (i.e. jitter) of about 0.5 µsec at 100kHz.

NOTE:

This jitter on the IOUT output delay parameter can be limitating in some applications.

Typical switching performance @ 25°C

Current [mA]	Turn ON time [µs]	Turn OFF time [µs]
0.5	2.0	4.8
1.0	2.0	3.9
4.0	2.2	3.3
10	2.3	2.7
40	2.3	2.7
100	2.3	2.7

Isolation characteristics

Parameter	Value
Isolation grade	Functional
Max. DC voltage	250 V
Max. AC voltage	170 V_RMS

The functional isolation is only for the circuit technical protection. It does not provide an isolation that can protect a human being from electrical shock!

Logical map

The state of the output port is determined as follows:

Logical State	Output port state
HIGH	The contact switch is closed (ON)
LOW	The contact switch is open (OFF)

Compatible loads

The following loads are compatible with the isolated contact output ports:

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Any load within the 30 V / 100 mA envelope is accepted. The power originates from an external power source or alternatively from the power delivered through the 12 V and GND pins of the I/O connectors.