L6374 STMicroelectronics, L6374 Datasheet
L6374
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L6374 Summary of contents
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... High speed operation 300 kHz with 35 V swing Figure 1. Block diagram March 2008 Industrial quad line driver SO-20 Description The L6374 is especially designed to be used as a line driver in industrial control systems based on the 24 V signal levels (IEC 61131, 24VDC). Table 1. Device summary Order codes Package L6374FP ...
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... Thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.1 RthJP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.2 RthJA1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4.3 RthJA2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Overtemperature protection (OVT Undervoltage protection (UV Diagnostic logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 8 Programmable delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 9 Analog inputs (I1,I2,I3,I4 State / push-pull input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 11 The switching of the output stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 12 Application note . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 13 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 14 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2/19 L6374 ...
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... L6374 1 Maximum ratings Table 2. Absolute maximum ratings Symbol Pin 12, ilog 13 I ilog out 17 out I set 11 V set V diag 14 I diag stg 2 Pin connections Figure 2. Pins connection (top view) Parameter ≤ ...
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... S out ±100mA; sourced @ high out output, sunk @ low output T = 125 °C J Same ° out Diagnostic OFF diag diag L6374 Min Typ Max Unit 10 10.8 V 250 450 650 1.05 1.25 1.35 V µA -30 -20 -10 µA ...
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... L6374 Table 3. Electrical characteristics (continued) Symbol Pin Parameter AC operation ( waveforms diagrams Delay time on rising edge to181 Delay time on falling edge Rise time 17,18 t Fall time f Test condition = -25 to 125 ° 100 mA; unless otherwise specified; see switching ...
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... PCB itself the same situation of point above, without any heatsinking surface created on purpose on the board. 6/19 Parameter L6374 Value Unit °C/W 17 °C/W 65 ° ...
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... L6374 Figure 3. Printed heatsink Thermal characteristics 7/19 ...
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... Undervoltage protection (UV) The supply voltage is expected to range from even if its reference value is considered this range the L6374 operates correctly. Below 10.8 V the overall system has to be considered not reliable. Consequently the supply voltage is monitored continuously and a signal, called UV, is internally generated and used. The signal is " ...
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... L6374 7 Diagnostic logic The situations that are monitored and signalled with the Diag output pin are: ● current limit (OVC) in action; there are 8 individual current limiting circuits, two per each output, i.e. one per every output transistor; they limit the current that can be either sour- ced or sunk from each output typical value of 150 mA, equal for all of them ...
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... The input 3st/Pp is instead intended for a digital incoming signal. It has an internal threshold set at 1. internal bias circuit (10 mA typical) simulates a high level (three-state) if the pin is disconnected. Figure 4. Equivalent input circuit Figure 5. Input comparator threshold 10/19 H ys2 H ys2 V out ref D94IN073 L6374 ...
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... The switching of the output stage The cross conduction of the two transistors of an output stage of the L6374 would be significantly noisy, because the transistors here can carry peak currents in excess of 100 mA, and even more in the few nanoseconds before the current limiting circuits are really effective ...
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... From the above it is possible to see how the switching times, inherently very fast, of the output stages, may be difficult to identify in a waveform if the output load is not accurately taken into consideration. Figure 11 show typical switching waveform for inputs and outputs 350 Ω connected to ground Figure 12/19 Figure 10). L6374 9). With a load almost free from ...
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... L6374 = 35 V, 350 Ω connected to V Figure 350 Ω and 1 mH connected to ground. Figure The switching of the output stage S 13/19 ...
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... The switching of the output stage = 35 V, 350 Ω connected to ground. Figure 10 Figure 11. Switching waveforms. In Out 14/19 50 90% 10 L6374 50 90% 10 D94IN074 ...
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... L6374 12 Application note It is recommended not to leave the Ref pin (pin 11) floating: if not used with an external voltage reference better to connect an external capacitor (of at least 10 nF) between this pin and ground. This capacitor filters the voltage reference against voltage spikes that can be generated by the commutation of the output stages ...
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... These packages have a lead-free second level interconnect . The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK trademark. ECOPACK specifications are available at: 16/19 www.st.com L6374 ...
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... L6374 Table 5. SO-20 mechanical data Dim Figure 12. Package dimensions mm Min Typ Max 2.35 2.65 0.1 0.3 0.33 0.51 0.23 0.32 12.6 13 7.4 7.6 1.27 10 10.65 0.25 0.75 0.4 1.27 0° (min.)8° (max.) Package mechanical data inch Min Typ Max 0.093 0.104 0.004 0.012 0.013 0.020 0.009 0.013 0.496 0.512 0.291 0.299 0.050 ...
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... Revision history 14 Revision history Table 6. Document revision history Date August 2003 June 2004 03-Mar-2008 18/19 Revision 1 First Issue 2 Technical migration from ST-PRESS to EDOCS. 3 Modified: Removed obsolete package DIP-20 L6374 Changes ...
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... L6374 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...