SN74GTLP817PW

SN74GTLP817 GTLP-TO-LVTTL 1-TO-6 FANOUT DRIVER www.ti.com FEATURES • • • • • • • • • • • • OEC™ Circuitry Improves Signal Integrity and Reduces Electromagnetic Interference Bidirectional Interface Between GTLP Signal Levels and LVTTL Logic Levels GTLP-to-LVTTL 1-to-6 Fanout Driver LVTTL-to-GTLP 1-to-2 Fanout Driver LVTTL Interfaces Are 5-V Tolerant Medium-Drive GTLP Outputs (50 mA) Reduced-Drive LVTTL Outputs (–12 mA/12 mA) Variable Edge-Rate Control (ERC) Input Selects GTLP Rise and Fall Times for Optimal Data-Transfer Rate and Signal Integrity in Distributed Loads Ioff and Power-Up 3-State Support Hot Insertion Distributed VCC and GND Pins Minimize High-Speed Switching Noise Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) SCES285E – OCTOBER 1999 – REVISED APRIL 2005 DGV, DW, OR PW PACKAGE (TOP VIEW) AI AO1 GNDT AO2 VCC AO3 GNDT AO4 VCC AO5 GNDT AO6 1 24 2 23 3 22 4 21 5 20 6 19 7 18 8 17 9 16 10 15 11 14 12 13 GNDT OEAB BO1 GNDG VREF GNDG ERC BO2 GNDG BI OEBA GNDT DESCRIPTION/ORDERING INFORMATION The SN74GTLP817 is a medium-drive fanout driver that provides LVTTL-to-GTLP and GTLP-to-LVTTL signal-level translation. The device provides a high-speed interface between cards operating at LVTTL logic levels and a backplane operating at GTLP signal levels. High-speed (about three times faster than standard TTL or LVTTL) backplane operation is a direct result of GTLP reduced output swing ( VCC. The package thermal impedance is calculated in accordance with JESD 51-7. SN74GTLP817 GTLP-TO-LVTTL 1-TO-6 FANOUT DRIVER www.ti.com SCES285E – OCTOBER 1999 – REVISED APRIL 2005 Recommended Operating Conditions VCC (1) (2) (3) (4) Supply voltage VTT Termination voltage VREF Reference voltage VI Input voltage VIH High-level input voltage MIN NOM MAX UNIT V 3.15 3.3 3.45 GTL 1.14 1.2 1.26 GTLP 1.35 1.5 1.65 GTL 0.74 0.8 0.87 GTLP 0.87 1 1.1 BI ERC AI, OE VCC 5.5 VCC 5.5 Low-level input voltage VCC – 0.6 Input clamp current IOH High-level output current IOL Low-level output current ∆t/∆v Input transition rise or fall rate ∆t/∆VCC Power-up ramp rate TA Operating free-air temperature (1) (2) (3) (4) V 2 VREF – 0.05 ERC GND AI, OE IIK V VREF + 0.05 BI VIL V VTT AI, OE BI V 0.6 V 0.8 –18 mA AO port –12 mA AO port 12 BO port 50 Outputs enabled mA 10 –40 ns/V µs/V 20 85 °C All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004. Normal connection sequence is GND first and VCC = 3.3 V, I/O, control inputs, VTT, VREF (any order) last. VTT and RTT can be adjusted to accommodate backplane impedances if the dc recommended IOL ratings are not exceeded. VREF can be adjusted to optimize noise margins, but normally is two-thirds VTT. 5 SN74GTLP817 GTLP-TO-LVTTL 1-TO-6 FANOUT DRIVER www.ti.com SCES285E – OCTOBER 1999 – REVISED APRIL 2005 Electrical Characteristics over recommended operating free-air temperature range for GTLP (unless otherwise noted) PARAMETER VIK VOH AO port VCC = 3.15 V, II = –18 mA VCC = 3.15 V to 3.45 V, IOH = –100 µA VCC – 0.2 IOH = –100 µA VCC – 0.2 VCC = 3.15 V VCC = 3.15 V to 3.45 V, AO port VCC = 3.15 V VOL BO port II BI, AI, OE, ERC AO port IOZH BO port AO port IOZL BO port ICC AO or BO port ∆ICC (2) Ci Co (1) (2) MIN TYP (1) TEST CONDITIONS VCC = 3.15 V VCC = 3.45 V, VCC = 3.45 V VCC = 3.45 V VCC = 3.45 V, IO = 0, VI (AI or control input) = VCC or GND, VI (BI input) = VTT or GND IOH = –6 mA 2.4 IOH = –12 mA 2.2 MAX UNIT –1.2 V V IOL = 100 µA 0.2 IOL = 100 µA 0.2 IOL = 6 mA 0.4 IOL = 12 mA 0.5 IOL = 100 µA 0.2 IOL = 40 mA 0.5 IOL = 50 mA 0.55 VI = 0 or 5.5 V ±5 VO = VCC 10 VO = 1.5 V 5 VO = GND –10 VO = 5.5 V –5 Outputs high 10 Outputs low 10 Outputs disabled 10 AI, OE VCC = 3.45 V, One A-port or control input at VCC – 0.6 V, Other A-port or control inputs at VCC or GND AI, OE, ERC VI = VCC or 0 4 4.4 BI VI = VTT or 0 3.5 3.9 AO port VO = VCC or 0 4 4.5 BO port VO = VTT or 0 5 5.4 1 V µA µA µA mA mA pF pF All typical values are at VCC = 3.3 V, TA = 25°C. This is the increase in supply current for each input that is at the specified LVTTL voltage level, rather than VCC or GND. Hot-Insertion Specifications for A Port over recommended operating free-air temperature range PARAMETER Ioff TEST CONDITIONS VCC = 0, VI or VO = 0 to 5.5 V IOZPU VCC = 0 to 1.5 V, VO = 0.5 V to 3 V, IOZPD VCC = 1.5 V to 0, VO = 0.5 V to 3 V, MIN MAX UNIT 10 µA OE = 0 ±30 µA OE = 0 ±30 µA MAX UNIT Hot-Insertion Specifications for B Port over recommended operating free-air temperature range PARAMETER Ioff 6 TEST CONDITIONS VCC = 0, VI or VO = 0 to 1.5 V IOZPU VCC = 0 to 1.5 V, VO = 0.5 V to 1.5 V, IOZPD VCC = 1.5 V to 0, VO = 0.5 V to 1.5 V, MIN 10 µA OE = 0 ±30 µA OE = 0 ±30 µA SN74GTLP817 GTLP-TO-LVTTL 1-TO-6 FANOUT DRIVER www.ti.com SCES285E – OCTOBER 1999 – REVISED APRIL 2005 Switching Characteristics over recommended ranges of supply voltage and operating free-air temperature, VTT = 1.5 V and VREF = 1 V for GTLP (see Figure 1) PARAMETER tPLH tPHL tPLH tPHL ten tdis ten tdis TO (OUTPUT) EDGE RATE (1) AI BO Slow AI BO Fast OEAB BO Slow OEAB BO Fast tr Rise time, B outputs (20% to 80%) tf Fall time, B outputs (80% to 20%) tPLH tPHL ten tdis (1) (2) FROM (INPUT) BI AO OEBA AO MIN TYP (2) MAX 3 6 1.8 4.7 2 5 1.5 4.2 3 6.1 2 4.7 2.1 6 1.5 4.7 Slow 2.5 Fast 1.4 Slow 1.7 Fast 1 UNIT ns ns ns ns ns ns 2.3 6 1.9 4.7 1.1 6.3 1.2 5 ns ns Slow (ERC = VCC) and Fast (ERC = GND) All typical values are at VCC = 3.3 V, TA = 25°C. 7 SN74GTLP817 GTLP-TO-LVTTL 1-TO-6 FANOUT DRIVER www.ti.com SCES285E – OCTOBER 1999 – REVISED APRIL 2005 PARAMETER MEASUREMENT INFORMATION 1.5 V 6V 500 Ω From Output Under Test S1 Open TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH GND CL = 50 pF (see Note A) 500 Ω S1 Open 6V GND LOAD CIRCUIT FOR AO PORTS 25 Ω From Output Under Test Test Point CL = 30 pF (see Note A) LOAD CIRCUIT FOR BO PORTS 3V 1.5 V Input 1.5 V 0V tPLH tPHL VOH 1V Output 1V 3V VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES (AI to BO port) 1V 1V 0V tPLH 1.5 V tPLZ 3V 1.5 V VOL + 0.3 V VOL tPZH 1.5 V VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES (BI to AO port) 1.5 V 0V Output Waveform 1 S1 at 6 V (see Note B) tPHL VOH Output 1.5 V tPZL 1.5 V Input Output Control Output Waveform 2 S1 at GND (see Note B) tPHZ VOH 1.5 V VOH − 0.3 V ≈0 V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES (AO ports) NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control. C. All input pulses are supplied by generators having the following characteristics: PRR ≈ 10 MHz, ZO = 50 Ω, tr ≈ 2 ns, tf ≈ 2 ns. D. The outputs are measured one at a time, with one transition per measurement. Figure 1. Load Circuits and Voltage Waveforms 8 SN74GTLP817 GTLP-TO-LVTTL 1-TO-6 FANOUT DRIVER www.ti.com SCES285E – OCTOBER 1999 – REVISED APRIL 2005 Distributed-Load Backplane Switching Characteristics The preceding switching characteristics table shows the switching characteristics of the device into a lumped load (Figure 1). However, the designer's backplane application probably is a distributed load. The physical representation is shown in Figure 2. This backplane, or distributed load, can be approximated closely to a resistor inductance capacitance (RLC) circuit, as shown in Figure 3. This device has been designed for optimum performance in this RLC circuit. The following switching characteristics table shows the switching characteristics of the device into the RLC load, to help the designer better understand the performance of the GTLP device in this typical backplane. See www.ti.com/sc/gtlp for more information. 38 Ω 0.25” ZO = 70 Ω 2” Conn. 1” Conn. 2” Conn. Conn. 1” 1” 0.25” 38 Ω 1.5 V 1.5 V 1” Rcvr Rcvr Rcvr Slot 2 Slot 9 Slot 10 Drvr Slot 1 Figure 2. Medium-Drive Test Backplane 1.5 V 19 Ω From Output Under Test LL = 19 nH Test Point CL = 9 pF Figure 3. Medium-Drive RLC Network 9 SN74GTLP817 GTLP-TO-LVTTL 1-TO-6 FANOUT DRIVER www.ti.com SCES285E – OCTOBER 1999 – REVISED APRIL 2005 Switching Characteristics over recommended ranges of supply voltage and operating free-air temperature, VTT = 1.5 V and VREF = 1 V for GTLP (see Figure 3) PARAMETER tPLH tPHL tPLH tPHL ten tdis ten tdis (1) (2) 10 FROM (INPUT) TO (OUTPUT) EDGE RATE (1) AI BO Slow AI BO Fast OEAB BO Slow OEAB BO Fast tr Rise time, B outputs (20% to 80%) tf Fall time, B outputs (80% to 20%) Slow (ERC = VCC) and Fast (ERC = GND) All typical values are at VCC = 3.3 V, TA = 25°C. All values are derived from TI-SPICE models. TYP (2) 4.4 4.4 3.2 3.2 4 4.4 2.9 3.1 Slow 1.8 Fast 1 Slow 2 Fast 1.6 UNIT ns ns ns ns ns ns PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) (4/5) (6) SN74GTLP817PW ACTIVE TSSOP PW 24 60 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 GT817 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of