74LCX125TTR

74LCX125 Low-voltage CMOS quad bus buffer (3-state) with 5 V tolerant inputs and outputs Datasheet − production data Features ■ 5 V tolerant inputs and outputs ■ High speed – tPD = 5.2 ns (max.) at VCC = 3 V ■ Power-down protection on inputs and outputs ■ Symmetrical output impedance – |IOH| = IOL = 24 mA (min.) at VCC = 3 V ■ PCI bus levels guaranteed at 24 mA ■ Balanced propagation delay – tPLH ≅ tPHL Operating voltage range – VCC (opr.) = 2.0 V to 3.6 V ■ Pin and function compatible with 74 series 125 ■ Latch-up performance exceeds 500 mA (JESD 17) ■ ESD performance – HBM: 2000 V (MIL STD 883 method 3015) – MM: 200 V – CDM: 1000 V ■ Automotive ■ Industrial ■ Computer ■ Consumer Table 1. SO-14 Description ■ Applications TSSOP14 The 74LCX125 device is a low-voltage CMOS quad bus buffer manufactured with sub-micron silicon gate and double-layer metal wiring C 2MOS technology. It is ideal for low-power and highspeed 3.3 V applications and can be interfaced to a 5 V signal environment for both inputs and outputs. The device requires the 3-state control input G to be set high to place the output in the high impedance state. It has the same speed performance at 3.3 V as the 5 V AC/ACT family, combined with lower power consumption. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2 kV ESD immunity and transient excess voltage. Device summary Order code Temperature range Package Packaging Marking 74LCX125TTR -40/+85 °C TSSOP14 Tape and reel LCX125 74LCX125YTTR (1) -40/+85 °C TSSOP14 (automotive grade) Tape and reel LCX125Y 74LCX125MTR -40/+85 °C SO-14 Tape and reel 74LCX125 74LCX125YMTR(1) -40/+85 °C SO-14 (automotive grade) Tape and reel 74LCX125Y 1. Qualification and characterization according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 and Q002 or equivalent. October 2012 This is information on a product in full production. Doc ID 4980 Rev 8 1/16 www.st.com 16 Contents 74LCX125 Contents 1 Logic symbols and I/O equivalent circuit . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 2.1 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.3 Truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2/16 Doc ID 4980 Rev 8 74LCX125 1 Logic symbols and I/O equivalent circuit Logic symbols and I/O equivalent circuit Figure 1. IEC logic symbols Figure 2. Input and output equivalent circuit Doc ID 4980 Rev 8 3/16 Pin settings 74LCX125 2 Pin settings 2.1 Pin connections Figure 3. 2.2 Pin connections (top through view) Pin description Table 2. 2.3 Pin description Pin number Symbol Name and function 1, 4, 10, 13 1G TO 4G Output enable input 2, 5, 9, 12 1A TO 4A Data inputs 3, 6, 8, 11 1Y TO 4Y Data outputs 7 GND Ground (0 V) 14 VCC Positive supply voltage Truth table Table 3. Truth table Inputs Output A G Y a X(1) H a Z(2) L L L H L H 1. “Do not care”. 2. High impedance. 4/16 Doc ID 4980 Rev 8 74LCX125 3 Maximum ratings Maximum ratings Stressing the device above the rating listed in Table 4: Absolute maximum ratings 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 Table 5: Recommended operating conditions of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Table 4. Absolute maximum ratings Symbol Parameter Value Unit Supply voltage -0.5 to +7.0 V VI DC input voltage -0.5 to +7.0 V VO DC output voltage (V CC = 0 V) -0.5 to +7.0 V -0.5 to VCC + 0.5 V VCC state)(1) VO DC output voltage (high or low IIK DC input diode current -50 mA IOK DC output diode current(2) -50 mA IO DC output current ± 50 mA ICC DC supply current per supply pin ± 100 mA IGND DC ground current per supply pin ± 100 mA Tstg Storage temperature -65 to +150 °C 300 °C Value Unit 2.0 to 3.6 V TL Lead temperature (10 sec.) 1. IO absolute maximum rating must be observed. 2. VO < GND. Recommended operating conditions Table 5. Recommended operating conditions Symbol VCC Parameter Supply voltage(1) VI Input voltage 0 to 5.5 V VO Output voltage (VCC = 0 V) 0 to 5.5 V VO Output voltage (high or low state) 0 to VCC V IOH, IOL High or low level output current (VCC = 3.0 to 3.6 V) ± 24 mA IOH, IOL High or low level output current (VCC = 2.7 V) ± 12 mA 0 to 10 ns/V dt/dv Input rise and fall time (2) 1. Truth table guaranteed: 1.5 V to 3.6 V. 2. VIN from 0.8 V to 2 V at VCC = 3.0 V. Doc ID 4980 Rev 8 5/16 Electrical characteristics 4 74LCX125 Electrical characteristics Table 6. DC specifications Test condition Symbol Parameter High level input voltage VIL Low level input voltage VOH -40 to 85 °C VCC (V) VIH Min. Unit Max. 2.0 V 2.7 to 3.6 High level output voltage 0.8 2.7 to 3.6 IO = -100 μA VCC - 0.2 2.7 IO = -12 mA 2.2 IO = -18 mA 2.4 IO = -24 mA 2.2 3.0 VOL Value Low level output voltage V 2.7 to 3.6 IO = 100 μA 0.2 2.7 IO = 12 mA 0.4 IO = 16 mA 0.4 IO = 24 mA 0.55 3.0 V V II Input leakage current 2.7 to 3.6 VI = 0 to 5.5 V ±5 μA Ioff Power OFF leakage current 0 VI or VO = 5.5 V 10 μA IOZ High Impedance output leakage current 2.7 to 3.6 VI = VIH or VIL VO = 0 to VCC ±5 μA Quiescent supply current 2.7 to 3.6 VI = VCC or GND 10 ICC VI or VO = 3.6 to 5.5 V ± 10 I incr. per input 2.7 to 3.6 VIH = VCC - 0.6 V 500 ΔICC Table 7. VOLP VOLV μA Dynamic switching characteristics Test condition Symbol μA Parameter Dynamic low level quiet output(1) TA = 25 °C VCC (V) 3.3 Value Min. CL = 50 pF VIL = 0 V, VIH = 3.3 V Unit Typ. Max. 0.8 V -0.8 1. Number of outputs defined as “n”. Measured with “n-1” outputs switching from HIGH to LOW or LOW to HIGH. The remaining output is measured in the LOW state. 6/16 Doc ID 4980 Rev 8 74LCX125 Electrical characteristics Table 8. AC electrical characteristics Test condition Symbol tPLH, tPHL Parameter Propagation delay time Output enable tPZL, tPZH time to HIGH and LOW level Output disable tPLZ, tPHZ time to HIGH and LOW level tOSLH tOSHL Output to output skew time (1) (2) VCC (V) Value CL (pF) RL (Ω) ts = tr (ns) 50 500 2.5 -40 to 85 °C Min. 2.7 Unit Max. 6.0 3.0 to 3.6 2.7 50 500 2.7 500 50 500 1.0 6.0 1.0 5.0 1.0 6.0 1.0 5.0 ns 2.5 3.0 to 3.6 3.0 to 3.6 5.2 2.5 3.0 to 3.6 50 ns 1.0 ns 2.5 1.0 ns 1. Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switching in the same direction, either HIGH or LOW (tOSLH = | tPLHm - tPLHn|, tOSHL = | tPHLm - tPHLn|). 2. Parameter guaranteed by design. Table 9. Capacitive characteristics Test condition Symbol CIN Parameter Value TA = 25 °C VCC (V) Min. Typ. Unit Max. Input capacitance 3.3 VIN = 0 to VCC 5 pF COUT Output capacitance 3.3 VIN = 0 to VCC 10 pF CPD Power dissipation capacitance(1) 3.3 fIN = 10 MHz VIN = 0 or VCC 37 pF 1. CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Table 10: Test circuit. Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/4 (per gate). Doc ID 4980 Rev 8 7/16 Test circuit 5 Note: 74LCX125 Test circuit Figure 4. Test circuit Table 10. Test circuit Test Switch tPLH, tPHL Open tPZL, tPLZ 6V tPZH, tPHZ GND CL = 50 pF or equivalent (includes jig and probe capacitance) RL = 500 Ω or equivalent RT = ZOUT of pulse generator (typically 50 Ω ). 8/16 Doc ID 4980 Rev 8 74LCX125 6 Waveforms Waveforms Figure 5. Propagation delay (f = 1 MHz; 50% duty cycle) Figure 6. Output enable and disable time (f = 1 MHz; 50% duty cycle) Doc ID 4980 Rev 8 9/16 Package information 7 74LCX125 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. 10/16 Doc ID 4980 Rev 8 74LCX125 Package information Figure 7. SO-14 package outline Table 11. SO-14 package mechanical data Dimensions Symbol mm Min. Typ. inch Max. Min. Typ. Max. A 1.35 1.75 0.053 0.069 A1 0.1 0.25 0.004 0.010 A2 1.10 1.65 0.043 0.065 B 0.33 0.51 0.013 0.020 C 0.19 0.25 0.007 0.010 D 8.55 8.75 0.337 0.344 E 3.8 4.0 0.150 0.157 e 1.27 0.050 H 5.8 6.2 0.228 0.244 h 0.25 0.50 0.010 0.020 L 0.4 1.27 0.016 0.050 k 0° 8° 0° 8° ddd 0.100 Doc ID 4980 Rev 8 0.004 11/16 Package information Figure 8. . Table 12. 74LCX125 TSSOP14 package outline TSSOP14 package mechanical data Dimensions Symbol mm Min. Typ. A Max. Min. Typ. 1.2 A1 0.05 A2 0.8 b Max. 0.047 0.15 0.002 0.004 0.006 1.05 0.031 0.039 0.041 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0089 D 4.9 5 5.1 0.193 0.197 0.201 E 6.2 6.4 6.6 0.244 0.252 0.260 E1 4.3 4.4 4.48 0.169 0.173 0.176 e 12/16 inch 1 0.65 BSC K 0° L 0.45 0.60 0.0256 BSC 8° 0° 0.75 0.018 Doc ID 4980 Rev 8 8° 0.024 0.030 74LCX125 Package information Figure 9. Tape and reel SO-14 outline Drawing is not in scale. Table 13. Tape and reel SO-14 mechanical data Dimensions Symbol mm Min. A Typ. inch Max. Min. 330 Max. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 Typ. 0.504 22.4 0.519 0.882 Ao 6.4 6.6 0.252 0.260 Bo 9 9.2 0.354 0.362 Ko 2.1 2.3 0.082 0.090 Po 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.319 Doc ID 4980 Rev 8 13/16 Package information 74LCX125 Figure 10. Tape and reel TSSOP14 outline Drawing is not in scale. . Table 14. Tape and reel TSSOP14 mechanical data Dimensions Symbol mm 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. inch 0.504 22.4 0.519 0.882 Ao 6.7 6.9 0.264 0.272 Bo 5.3 5.5 0.209 0.217 Ko 1.6 1.8 0.063 0.071 Po 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.319 Doc ID 4980 Rev 8 74LCX125 8 Revision history Revision history Table 15. Document revision history Date Revision 15-Sep-2004 5 Ordering codes revision - pag. 1 13-Jul-2006 6 New template, temperature ranges updated 7 Added Applications on page 1 Updated Table 1: Device summary on page 1 Updated Top in Table 5: Recommended operating conditions Updated ECOPACK® text in Section 7: Package information Minor textual updates 8 Updated ESD performance in Features (updated HBM and MM, added CDM). Added 74LCX125YMTR device and “Marking” to Table 1, updated temperature range and note 1. Updated Section 3: Maximum ratings (added cross-references). Removed “Operating temperature” from Table 5. Reformatted Section 7: Package information. Minor corrections throughout document. 20-Jun-2012 02-Oct-2012 Changes Doc ID 4980 Rev 8 15/16 74LCX125 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. 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