STG3157 Low voltage low on-resistance SPDT switch with break-before-make feature Features ■ High speed: – tPD = 0.3 ns (max) at VCC = 4.5 V – tPD = 0.8 ns (max) at VCC = 3.0 V – tPD = 1.2 ns (max) at VCC = 2.3 V ■ Ultra low power dissipation: – ICC = 1 µA (max) at TA = 85 °C ■ Low on-resistance; at VIN = 0 V: – RON = 7 Ω (max TA = 85 °C) at VCC = 4.5 V – RON = 9 Ω (max TA = 85 °C) at VCC = 3.0 V ■ Wide operating voltage range: – VCC (OPR) = 1.65 V to 5.5 V single supply ■ TTL threshold ON control input at VCC = 2.7 to 3.6 V ■ Pin and function compatible with 74 series 3157 ■ Latch-up performance exceeds 150 mA (JESD 17) SOT323-6L (connected to common port D) when the IN input is held high, and OFF (a high impedance state exists between the two ports) when IN is held low. Switch S2 is ON (connected to common port D) when the IN input is held low and OFF (a high impedance state exists between the two ports) when IN is held high. Additional key features are fast switching speed, break-before-make delay time, and very low power consumption. All inputs and outputs are equipped with protection circuits to protect against static discharge, giving them immunity from ESD and transient excess voltage. Description The STG3157 is a high-speed CMOS analog SPDT (single-pole double-throw) switch or 2:1 multiplexer/demultiplexer bus switch manufactured using silicon gate C2MOS technology. It is designed to operate from a 1.65 V to 5.5 V supply, making the device ideal for portable applications. The STG3157 features very low on-resistance (< 9 Ω) at VCC = 3.0 V. The IN input is provided to control the SPDT switch, and is compatible with standard CMOS output. Switch S1 is ON Table 1. April 2010 Device summary Order code Package Packing STG3157CTR SOT323-6L Tape and reel Doc ID 9007 Rev 2 1/18 www.st.com 18 Contents STG3157 Contents 1 Pin connections and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 DC Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 AC Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.3 Analog switch characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2/18 Doc ID 9007 Rev 2 STG3157 1 Pin connections and functions Pin connections and functions Figure 1. Pin connections and IEC logic symbols Table 2. Truth table IN Switch S1 Switch S2 H ON OFF (1) L OFF (1) ON 1. High impedance Table 3. Pin descriptions Pin Nº Symbol 1, 3 S1, S2 4 D Common channels 6 IN Control 5 VCC Positive supply voltage 2 GND Ground (0 V) Figure 2. Name and function Independent channels Input equivalent circuit Doc ID 9007 Rev 2 3/18 Electrical ratings 2 STG3157 Electrical ratings Stressing the device above the ratings listed in the “Absolute maximum ratings” table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents. Table 4. Absolute maximum ratings Symbol VCC Parameter Supply voltage Unit -0.5 to +7.0 V VI DC input voltage -0.5 to VCC + 0.5 V VIC DC control input voltage -0.5 to VCC + 0.5 V VO DC output voltage -0.5 to VCC + 0.5 V IIKC DC input diode current on control pin (VIN < 0V) ±50 mA IIK DC input diode current (VIN < 0V) ±50 mA IOK DC output diode current ±20 mA IO DC output current +128 mA DC VCC or ground current ±100 mA -65 to 150 °C 300 °C Value Unit 1.65 to 4.5 V ICC or IGND Tstg TL Table 5. Storage temperature Lead temperature (10 s) Recommended operating conditions Symbol VCC Parameter Supply voltage (1) VI Input voltage 0 to VCC V VIC Control input voltage 0 to 5.5 V VO Output voltage 0 to VCC V Top Operating temperature -55 to 125 °C dt/dv Input rise and fall time control input VCC = 1.65V to 2.7V 0 to 20 VCC = 3.0 to 4.5V 0 to 10 1. Truth table guaranteed: 1.2 V to 6.0 V 4/18 Value Doc ID 9007 Rev 2 ns/V STG3157 Electrical characteristics 3 Electrical characteristics 3.1 DC Electrical characteristics Table 6. DC specifications Test conditions Value Symbol Parameter TA = 25°C -40 to 85°C -55 to 125°C Unit Vcc (V) Min. VIH VIL High level input voltage Low level input voltage Max. Min. 0.75VCC 0.75VCC 2.3-2.5 0.7VCC 0.7VCC 0.7VCC 2.7-3.6 2 2 2 Max. V 1.65-1.95 0.25VCC 0.25VCC 0.25VCC 2.3-2.5 0.3VCC 0.3VCC 0.3VCC 2.7-3.6 0.8 0.8 0.8 VS = 0V IS = 30mA 4.4 7 7 9 VS = 2.4V IS = 30mA 4.9 12 12 14.5 VS = 4.5V IS = 30mA 6.1 15 15 18 VS = 0V IS = 100mA 5.2 9 9 11 VS = 3V IS = 24mA 7.8 20 20 24 VS = 0V IS = 8mA 6.5 12 12 14.5 VS = 2.3V IS = 8mA 9.6 30 30 36 VS = 0V IS = 4mA 9.0 20 20 24 VS = 1.65V IS = 4mA 14 50 50 60 4.5 VS = 3.15V IS = 30mA 0.10 3.0 VS = 2.1V IS = 24mA 0.10 2.3 VS = 1.6V IS = 8mA 0.20 1.65 VS = 1.15V IS = 4mA 0.35 Switch onresistance 2.3 1.65 ΔRON Min. 0.75VCC 3.0 Onresistance match between channels Max. 1.65-1.95 4.5 RON Typ. V Ω Ω Doc ID 9007 Rev 2 5/18 Electrical characteristics Table 6. STG3157 DC specifications (continued) Test conditions Value Symbol Parameter TA = 25°C -40 to 85°C -55 to 125°C Unit Vcc (V) Min. RFLAT IOFF IIN Input leakage current ICC Quiescent supply current 6/18 Max. Min. Max. Min. Max. 5.0 VS = 0V to VCC IS = 30mA 3 3.3 VS = 0V to VCC IS = 24mA 6 2.5 VS = 0V to VCC IS = 8mA 14 1.8 VS = 0V to VCC IS = 4mA 80 1.65-195 VS = 0 to VCC ±0.05 ±0.1 ±1 ±10 μA 0 - 5.5 VIN = 0 to 5.5V ±0.05 ±0.1 ±1 ±10 μA 1.65 - 4.3 VIN = VCC or GND 1 1 10 μA Onresistance flatness OFF state leakage current Typ. Ω Doc ID 9007 Rev 2 STG3157 3.2 Electrical characteristics AC Electrical characteristics CL = 50 pF, RL = 500 Ω Table 7. AC specification Test conditions Symbol Value Parameter TA = 25°C -40 to 85°C -55 to 125°C Unit Vcc (V) Min. Typ. Max. Min. Max. Min. Max. 1.65-1.95 tLH, tHL Propagation delay 2.3-2.7 3.0-3.3 VI = Open tPLZ, tPHZ Output enable time (D to Sn) Output disable time (D to Sn) tD Break-beforemake time delay Q Charge injection 1.2 1.8 0.8 0.8 1.2 0.3 0.3 0.5 ns 4.5-5.5 tPZH, tPZL 1.2 1.65-1.95 7 15 7 20 7 27 2.3-2.7 3.5 11 3.5 14 3.5 17 3.0-3.3 2.5 7 2.5 7.6 2.5 9 4.5-5.5 1.7 5.2 1.7 5.7 1.7 7 1.65-1.95 3 10 3 13 3 16 2.3-2.7 2 7 2 7.5 2 9 3.0-3.3 1.5 5 1.5 5.3 1.5 6.5 4.5-5.5 1.7 3.5 1.7 3.8 1.7 5 1.65-5.5 0.5 ns ns 0.5 5 23 3.3 19 0.5 ns pC Doc ID 9007 Rev 2 7/18 Electrical characteristics 3.3 STG3157 Analog switch characteristics CL = 5 pF, RL = 50 Ω, TA = 25 °C Table 8. Analog switch characteristics Test conditions Symbol Value Parameter TA = 25°C -40 to 85°C -55 to 125°C Min. Min. Unit Vcc (V) Min. Typ. Max. Max. Max. OIRR Off isolation 1.65-5.5 RL = 50Ω f = 10MHz -57 dB Xtalk Crosstalk 1.65-5.5 RL = 50Ω f = 10MHz -54 dB BW -3dB bandwidth 1.65-5.5 RL = 50Ω 250 MHz CIN Control pin input capacitance CSn Sn port capacitance 5.0 f = 1MHz 13 CD D port capacitance when switch is enabled 5.0 f = 1MHz 21 8/18 5 Doc ID 9007 Rev 2 pF STG3157 Test circuits 4 Test circuits Figure 3. On-resistance Figure 4. Bandwidth Figure 5. OFF leakage Figure 6. Channel-to-channel crosstalk Figure 7. OFF isolation Figure 8. ON leakage Doc ID 9007 Rev 2 9/18 Test circuits Note: STG3157 Figure 9. Test circuit Table 9. Test circuit Test Switch tPLH, tPHL Open tPZL, tPLZ VCC tPZH, tPHZ GND CL = 5/35 pF or equivalent: (includes jig capacitance) RL = 50 Ω or equivalent RT = ZOUT of pulse generator (typically 50 Ω) Figure 10. Break-before-make time delay 10/18 Doc ID 9007 Rev 2 STG3157 Test circuits Figure 11. Switching time and charge injection Figure 12. Charge injection (VGEN = 0 V, RGEN = 0 Ω, RL = 1 MΩ, CL = 100 pF) Doc ID 9007 Rev 2 11/18 Package information 5 STG3157 Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK is an ST trademark. 12/18 Doc ID 9007 Rev 2 STG3157 Package information Table 10. SOT323-6L mechanical data mm. inch Dim. Min. Typ. Max. Min. Typ. Max. A 0.80 1.10 31.5 43.3 A1 0.00 0.10 0.0 3.9 A2 0.80 1.00 31.5 39.4 b 0.15 0.30 5.9 11.8 C 0.10 0.18 3.9 7.1 D 1.80 2.20 70.9 86.6 E 1.80 2.40 70.9 94.5 E1 1.15 1.35 45.3 53.1 e 0.65 25.6 e1 1.3 51.2 L 0.10 0.30 3.9 11.8 Figure 13. Package dimensions Doc ID 9007 Rev 2 13/18 Package information Table 11. STG3157 SOT323-6L footprint recommendation Dim. mm. inch A 2.88 0.113 B 0.78 0.031 C 0.36 0.014 D 0.65 0.026 E 1.05 0.041 F 1.65 0.065 Figure 14. SOT323-6L footprint recommendation 14/18 Doc ID 9007 Rev 2 STG3157 Package information Table 12. SOT323-6L tape information Dim mm. inch D 1.50 +0.1/0 0.059 +0.004/0 E 1.75 ±0.1 0.069 ±0.004 Po 4.00 ±0.1 0.157 ±0.004 T max. 0.40 0.016 D1 min. 1 0.039 F 3.5 ±0.05 0.138 ±0.002 K max. 2.40 0.094 P2 2.00 ±0.05 0.079 ±0.002 R 25 0.984 W 8.00 ±0.30 0.315 ±0.012 P1 4.00 0.157 Ao, Bo, Ko 0.05 min to 0.50 max 0.002 min to 0.020 max Figure 15. SOT323-6L tape information Doc ID 9007 Rev 2 15/18 Package information Table 13. STG3157 SOT323-6L reel information Dim mm. inch Tape size 8.0 ±0.30 0.315 ±0.012 A max. 180.0 7.086 B min. 1.5 0.059 C 13.0 ±0.20 0.512 ±0.008 D min. 20.2 0.795 N min. 60 2.362 G 8.4 +2/-0 0.319 +0.079/-0 T max. 14.4 0.567 Figure 16. SOT323-6L reel information 16/18 Doc ID 9007 Rev 2 STG3157 6 Revision history Revision history Table 14. Document revision history Date Revision 02-Sep-2002 1 Initial release. 2 Document reformatted. In the Features list on the coverpage, updated the “Latch-up performance exceeds” value from 300 mA to 150 mA. Minor text changes throughout the document. Replaced Order codes table on the coverpage with Table 1: Device summary. Added ECOPACK® statement in Section 5: Package information. 19-Apr-2010 Changes Doc ID 9007 Rev 2 17/18 STG3157 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. 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