STM7E1 7 e 1 channels switch array Features ■ Main switches max. RON less than 2 Ω ■ Provides 7 auxiliary switches with RON < 75 Ω ■ 6 VPP amplitude of analog input signal ■ Digital inputs are TTL levels compatible Description The STM7E1A consists of 7 identical ISDN E1 channels, each channel corresponding to 4 main low-resistant switches (a and b) and 2 auxiliary switches (c and d). The switches positions in all the channels are identical and controlled by a unique control resource driven by the digital inputs Lm, Ls and Sc. In each channel, the TX and RX lines can be switched between a Main port or a Spare-port by the main switches: if both "a" switches are closed and both "b" switches are open, the Main port is connected to the line, while if both "a" switches are open and both "b' switches are closed, the spare port is connected to the line. TQFP64 The power supplies of the chip need to be de coupled properly. This means that at least one external capacitor C1 must be connected in between GND and VPOS, one external capacitor C2 between GND and VNEG, and one external capacitor C3 between each pair of VNEG and VPOS. The 2 auxiliary switches enable to close a local loop between the TX and RX access of a port: if "c" is closed, the Spare port RX and TX access is connected between each other to form a local loop, while if "d" is closed, the Main port RX and TX access is connected between each other to form a local loop. The Spare port is only used for test purpose on the system board while the Main port is the communication channel. Consequently, a switching from the Main port to the Spare port occurs very rarely (<10 times a day). Table 1. Device summary Order code Temperature range Package Packaging STM7E1AR -40 to 85 °C TQFP64 (tape and reel) 1000 parts per reel November 2007 Rev 3 1/16 www.st.com 16 Contents STM7E1 Contents 1 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 Test mode description (mode = 0, test = 1) . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2/16 STM7E1 Application circuit 1 Application circuit Figure 1. Typical operating circuit MODE Sc Ls Lm TEST/Sn Control Decoding Level Shifting & Buffering a Tx#0 CHANNEL 0 Txm#0 b Txs#0 c a Rx#0 Rxm#0 b Rxs#0 CHANNEL 1 Txm#1 Txs#1 Rxm#1 Rxs#1 CHANNEL 6 Txm#6 Txs#6 Rxm#6 Rxs#6 Tx#1 Rx#1 Tx#6 Rx#6 VNEG d GND VPOS 3/16 Application circuit Table 2. STM7E1 Decoding of functional Mode 1 (Mode = L) Switches Status Description Sc low a closed, b open Main port is connected to the line Sc high a open, b closed Spare port is connected to the line Lm low d open Lm high d closed Main port local loop closed Ls low c open Spare port local loop open Ls high c closed Main Main port local loop open Auxiliary Spare port local loop closed When closing the main port local loop (Lm high), it is external system responsibility to ensure that the main port has previously been disconnected from the line (Sc has to be high). There is no internal mechanism to ensure this. When closing the spare port local loop (Ls high), it is external system responsibility to ensure that the spare port has previously been disconnected from the line (Sc has to be high). There is no internal mechanism to ensure this. Table 3. Decoding of functional Mode 2 (Mode = H) Input Outputs TEST/Sn A_TX B_TX L O C H C O C = Closed O = Open Table 4. Decoding of functional Mode 2 (Mode = H) Inputs Sc Lm Ls A_RX B_RX c d L L L C C O O L L H C O C O L H L O C O C L H H C O O O H L L O C O O C = Closed O = Open 4/16 Outputs STM7E1 1.1 Application circuit Test mode description (mode = 0, test = 1) In order to test the main switches (4-point measurement), test modes are foreseen where the main switches can be controlled independently from each other. One can enter in test mode by controlling the Sc, Lm and Ls pins according to the following table. The digital part and auxiliary switches can be tested in functional mode Table 5. Test mode Signification Sc Lm Ls A_TX closed H H L A_RX closed L H L B_TX closed H L H B_RX closed L L H B_TX & c closed H L L A_RX & d closed L L L H H H L H H All main switches open Note: Although there is an internal pull down in the TEST pin, an external hardware connection from TEST to GND is required on the board to work in functional, mode. 5/16 Pin configuration STM7E1 2 Pin configuration Figure 2. Pin configuration Table 6. Pin description Pin n° Symbol Type 1, 17, 33, 47 VNEG(1) P 2 Txm#2 IOA Channel 2: TX main port 3 Tx#2 IOA Channel 2: TX line 4 Txs#2 IOA Channel 2: TX spare port 5, 12, 21, 25, 29, 38, 52, 56, 60 GND G 6 Rxm#3 IOA Channel 3: RX main port 7 Rx#3 IOA Channel 3: RX line 8 Rxs#3 IOA Channel 3: RX spare port 9 Txm#3 IOA Channel 3: TX main port 6/16 Name and function Negative power supply Voltage reference for digital inputs STM7E1 Pin configuration Table 6. Pin description (continued) Pin n° Symbol Type Name and function 10 Tx#3 IOA Channel 3: TX line 11 Txs#3 IOA Channel 3: TX spare port 13 Rxm#4 IOA Channel 4: RX main port 14 Rx#4 IOA Channel 4: RX line 15 Rxs#4 IOA Channel 4: RX spare port 16, 34, 48, 64 VPOS(2) P 18 Txm#4 IOA Channel 4: TX main port 19 Tx#4 IOA Channel 4: TX line 20 Txs#4 IOA Channel 4: TX spare port 22 Rxm#5 IOA Channel 5: RX main port 23 Rx#5 IOA Channel 5: RX line 24 Rxs#5 IOA Channel 5: RX spare port 26 Txm#5 IOA Channel 5: TX main port 27 Tx#5 IOA Channel 5: TX line 28 Txs#5 IOA Channel 5: TX spare port 30 Rxm#6 IOA Channel 6: RX main port 31 Rx#6 IOA Channel 6: RX line 32 Rxs#6 IOA Channel 6: RX spare port 35 Sc I Control digital input 36 Ls I Control digital input 37 Lm I Control digital input 39 Txm#6 IOA Channel 6: TX main port 40 Tx#6 IOA Channel 6: TX line 41 Txs#6 IOA Channel 6: TX spare port 42 Mode I 43 Rxm#0 IOA Channel 0: RX main port 44 Rx#0 IOA Channel 0: RX line 45 Rxs#0 IOA Channel 0: RX spare port 46 TEST/Sn I Channel 6: RX main port 49 Txm#0 IOA Channel 0: TX main port 50 Tx#0 IOA Channel 0: TX line 51 Txs#0 IOA Channel 0: TX spare port 53 Rxm#1 IOA Channel 1: RX main port 54 Rx#1 IOA Channel 1: RX line 55 Rxs#1 IOA Channel 1: RX spare port 57 Txm#1 IOA Channel 1: TX main port Positive power supply Control Digital Input 7/16 Pin configuration Table 6. Note: 8/16 STM7E1 Pin description (continued) Pin n° Symbol Type Name and function 58 Tx#1 IOA Channel 1: TX line 59 Txs#1 IOA Channel 1: TX spare port 61 Rxm#2 IOA Channel 2: RX main port 62 Rx#2 IOA Channel 2: RX line 63 Rxs#2 IOA Channel 2: RX spare port 1 All VNEG pins to be connected together on board. 2 All VPOS pins to be connected together on board. STM7E1 Maximum ratings 3 Maximum ratings Table 7. Absolute maximum ratings Symbol Description Min. Max. Unit VPOS Positive power supply voltage VNEG - 0.3 VNEG + 7 V GND Reference ground VNEG - 0.3 VNEG + 7 V Input voltage for digital inputs and analog input/output pins VNEG - 0.3 VNEG + 7 V VIN Note: Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Table 8. Recommended operating conditions Symbol Parameter Min. Typ. Max. Unit VPOS Positive power supply voltage 3.3 - 5% 3.3 + 5% V VNEG Negative power supply voltage -3.3 - 5% -3.3 + 5% V Tamb Ambient temperature -25 85 °C TJ Junction temperature -25 120 °C Admissible peak current in 1 switch 300 mA Load capacitance on ASIC output 70 pF Ipeak, switch CIa Table 9. Digital part specifications Value Symbol Parameter Unit Min. Typ. Max. VIL Low input level 0 0.8 V VIH HigH input level 2 VPOS V VIT Low-high switching threshold voltage Ileak Input leakage current 1.6 -3 V 3 A 9/16 Maximum ratings Table 10. STM7E1 Analog part specifications Value Symbol Parameter Test condition Unit Min. Typ. Max. RON(main)(1) On-resistance of the main switches 1.6 2 Ω RON(aux)(1) On-resistance of the auxiliary switches 50 75 Ω ΔRON(main)(1) Difference of RON between VIN = 2V, TA = 25°C devices 0.5 ΔRON(main)(1) Difference of RON between switches of the same VIN = 2V, TA = 25°C device Ω 0.8 Ω ROFF(1,2) Off-resistance of the main and auxiliary switches CON(3) Capacitance at any switch pin, switch ON 120 pF COFF(3) Capacitance at any switch pin, switch OFF 40 pF Apeak,signal(1) fsignal(1,4) 100 Peak amplitude of the signal at switch pins -3 3 Vp Frequency of the signal at switch pins (3dB bandwidth) 50 12000 kHz 4 8 mVrms 0.15 1 µs Cross-talk(1,5) Cross-talk between lines Switch time of the main switches (a and b) t Note: 10/16 kΩ 1 All the parameters are valid only with a 75Ω (5%) load to GND. 2 Measured with a 5 V DC voltage applied to a closed switch. 3 Not tested in production. 4 Measured with a 2 VPP signal. 5 Measured with the line connected to GND at one side with a 75 Ω resistor and all the other lines driven by a 1 MHz, 2 VPP sine wave signal. 6 During the switching between the main and spare ports, the behavior of the component is not guaranteed: both main switches can be open (break before make). 7 Measured with the line switching from a 2.5 V DC level (main or spare port) to a -2.5 V DC level (spare or main port). STM7E1 Table 11. Maximum ratings Current consumption specifications Value Symbol Parameter Unit Min. Typ. Max. Pmain(1) Maximal average power dissipation in the main switches 40 mW Paux(1) Maximal average power dissipation in the auxiliary switches 150 mW ISTDBY(VNEG)(1,3) Standby (no switching) current of VNEG -500 500 µA ISTDBY(VPOS)(1,3) Standby (no switching) current of VPOS -500 500 µA ESWITCH(VNEG)(1) Energy to be delivered to by VPOS when switching -100 100 nJ ESWITCH(VPOS)(1) Energy to be delivered to by VPOS when switching -100 100 nJ Note: 1 These parameters are not tested in production. 2 This power is not delivered by VPOS and VNEG supplies but by the signal sources. 3 Only valid with digital inputs to GND or VPOS levels. 11/16 Package mechanical data 4 STM7E1 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. 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 is an ST trademark. ECOPACK specifications are available at: www.st.com 12/16 STM7E1 Package mechanical data TQFP64 mechanical data mm. inch. Dim. Min. Typ. Max. A Min. Typ. Max. 1.6 A1 0.05 A2 1.35 B 0.17 C 0.09 D 11.80 D1 9.80 D3 0.063 0.15 0.002 0.006 1.40 1.45 0.053 0.055 0.057 0.22 0.27 0.007 0.009 0.011 0.20 0.004 12.00 12.20 0.465 0.472 0.480 10.00 10.20 0.386 0.394 0.402 0.008 7.50 0.295 E 11.80 12.00 12.20 0.465 0.472 0.480 E1 9.80 10.00 10.20 0.386 0.394 0.402 E3 7.50 0.295 e 0.50 0.020 L 0.45 0.60 L1 0.75 0.018 0.024 1.00 K 0° 0.030 0.039 3.5° 7° 0° 3.5° 7° A D A2 D1 A1 D3 33 48 0.10mm 32 49 .004 E E1 64 17 L L1 E3 B Seating Plane K 1 e 16 C 0051434/E 13/16 Package mechanical data STM7E1 Tape & reel TQFP64 mechanical data mm. inch. Dim. Min. A Max. Min. 330 13.2 Typ. Max. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 14/16 Typ. 0.504 30.4 0.519 1.196 Ao 12.25 12.45 0482 0.490 Bo 12.25 12.45 0482 0.490 Ko 2.1 2.3 0.083 0.091 Po 3.9 4.1 0.153 0.161 P 15.9 16.1 0.626 0.639 STM7E1 Revision history 5 Revision history Table 12. Document revision history Date Revision 22-Jun-2004 2 15-Nov-2007 3 Changes Added Table 1. 15/16 STM7E1 Please Read Carefully: 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. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. © 2007 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 16/16