74GTLPH1645DGGRG4

SN74GTLPH1645 16-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER www.ti.com FEATURES • • • • • • • • • • • • Member of the Texas Instruments Widebus™ Family TI-OPC™ Circuitry Limits Ringing on Unevenly Loaded Backplanes OEC™ Circuitry Improves Signal Integrity and Reduces Electromagnetic Interference Bidirectional Interface Between GTLP Signal Levels and LVTTL Logic Levels LVTTL Interfaces Are 5-V Tolerant High-Drive GTLP Outputs (100 mA) LVTTL Outputs (–24 mA/24 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, Power-Up 3-State, and BIAS VCC Support Live Insertion Bus Hold on A-Port Data Inputs Distributed VCC and GND Pins Minimize High-Speed Switching Noise Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II SCES290D – OCTOBER 1999 – REVISED JUNE 2005 DGG OR DGV PACKAGE (TOP VIEW) 1DIR 1A1 1A2 GND 1A3 1A4 VCC GND 1A5 1A6 GND 1A7 1A8 GND ERC 2A1 2A2 GND 2A3 2A4 GND VCC 2A5 2A6 GND 2A7 2A8 2DIR 1 56 2 55 3 54 4 53 5 52 6 51 7 50 8 49 9 48 10 47 11 46 12 45 13 44 14 43 15 42 16 41 17 40 18 39 19 38 20 37 21 36 22 35 23 34 24 33 25 32 26 31 27 30 28 29 1OE 1B1 1B2 GND 1B3 1B4 VCC GND 1B5 1B6 GND 1B7 1B8 BIAS VCC VREF 2B1 2B2 GND 2B3 2B4 GND VCC 2B5 2B6 GND 2B7 2B8 2OE DESCRIPTION/ORDERING INFORMATION The SN74GTLPH1645 is a high-drive, 16-bit bus transceiver that provides LVTTL-to-GTLP and GTLP-to-LVTTL signal-level translation. It is partitioned as two 8-bit transceivers. 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 LVTTL or TTL) backplane operation is a direct result of GTLP's reduced output swing ( VCC. The package thermal impedance is calculated in accordance with JESD 51-7. www.ti.com SN74GTLPH1645 16-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER SCES290D – OCTOBER 1999 – REVISED JUNE 2005 Recommended Operating Conditions VCC, BIAS VCC Supply voltage VTT Termination voltage VREF Reference voltage VI Input voltage VIH High-level input voltage (1) (2) (3) (4) MIN NOM MAX UNIT 3.15 3.3 3.45 V 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 B port VTT Except B port B port ERC Except B port and ERC VCC 5.5 VCC 5.5 Low-level input voltage IIK 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 VCC – 0.6 (2) (3) (4) V V 2 VREF – 0.05 ERC GND Except B port and ERC (1) V VREF + 0.05 B port VIL V 0.6 V 0.8 A port –18 mA –24 mA A port 24 B port 100 Outputs enabled 10 ns/V µs/V 20 –40 mA 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. Proper connection sequence for use of the B-port I/O precharge feature is GND and BIAS VCC = 3.3 V first, I/O second, and VCC = 3.3 V last, because the BIAS VCC precharge circuitry is disabled when any VCC pin is connected. The control and VREF inputs can be connected anytime, but normally are connected during the I/O stage. If B-port precharge is not required, any connection sequence is acceptable but, generally, GND is connected first. 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. TI-OPC circuitry is enabled in the A-to-B direction and is activated when VTT > 0.7 V above VREF. If operated in the A-to-B direction, VREF should be set to within 0.6 V of VTT to minimize current drain. 7 SN74GTLPH1645 16-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER www.ti.com SCES290D – OCTOBER 1999 – REVISED JUNE 2005 Electrical Characteristics over recommended operating free-air temperature range for GTLP (unless otherwise noted) PARAMETER VIK VOH A port VCC = 3.15 V, II = –18 mA VCC = 3.15 V to 3.45 V, IOH = –100 µA VCC – 0.2 IOH = –12 mA 2.4 IOH = –24 mA 2 VCC = 3.15 V VCC = 3.15 V to 3.45 V, A port VCC = 3.15 V VOL B port II Control inputs IOZH (2) A port B port MIN TYP (1) MAX TEST CONDITIONS VCC = 3.15 V VCC = 3.45 V, VCC = 3.45 V –1.2 0.2 IOL = 12 mA 0.4 IOL = 24 mA 0.5 IOL = 10 mA 0.2 IOL = 64 mA 0.4 IOL = 100 mA 0.55 VI = 0 or 5.5 V ±10 VO = VCC 10 VO = 1.5 V 10 A and B ports VCC = 3.45 V, VO = GND IBHL (3) A port VCC = 3.15 V, VI = 0.8 V (4) V V IOL = 100 µA IOZL (2) UNIT –10 V µA µA µA 75 µA A port VCC = 3.15 V, VI = 2 V –75 µA IBHLO (5) A port VCC = 3.45 V, VI = 0 to VCC 500 µA IBHHO (6) A port VCC = 3.45 V, VI = 0 to VCC –500 µA ICC A or B port VCC = 3.45 V, IO = 0, VI (A-port or control inputs) = VCC or GND, VI (B port) = VTT or GND IBHH Cio (1) (2) (3) (4) (5) (6) (7) 40 Outputs low 40 Outputs disabled 40 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 ∆ICC (7) Ci Outputs high mA 1.5 mA pF Control inputs VI = 3.15 V or 0 4 5 A port VO = 3.15 V or 0 6.5 7.5 B port VO = 1.5 V or 0 9.5 11 pF All typical values are at VCC = 3.3 V, TA = 25°C. For I/O ports, the parameters IOZH and IOZL include the input leakage current. The bus-hold circuit can sink at least the minimum low sustaining current at VILmax. IBHL should be measured after lowering VIN to GND and then raising it to VILmax. The bus-hold circuit can source at least the minimum high sustaining current at VIHmin. IBHH should be measured after raising VIN to VCC and then lowering it to VIHmin. An external driver must source at least IBHLO to switch this node from low to high. An external driver must sink at least IBHHO to switch this node from high to low. This is the increase in supply current for each input that is at the specified TTL voltage level, rather than VCC or GND. Hot-Insertion Specifications for A Port over recommended operating free-air temperature range PARAMETER Ioff 8 TEST CONDITIONS MIN MAX UNIT 10 µA OE = 0 ±30 µA OE = 0 ±30 µA VCC = 0, BIAS 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, SN74GTLPH1645 16-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER www.ti.com SCES290D – OCTOBER 1999 – REVISED JUNE 2005 Live-Insertion Specifications for B Port over recommended operating free-air temperature range PARAMETER Ioff TEST CONDITIONS MIN µA ±30 µA VO = 0.5 V to 1.5 V, OE = 0 ±30 µA 5 mA 10 µA VI or VO = 0 to 1.5 V IOZPU VCC = 0 to 1.5 V, BIAS VCC = 0, IOZPD VCC = 1.5 V to 0, BIAS VCC = 0, ICC (BIAS VCC) VCC = 3.15 V to 3.45 V UNIT VO = 0.5 V to 1.5 V, OE = 0 BIAS VCC = 0, VCC = 0 to 3.15 V MAX 10 VCC = 0, BIAS VCC = 3.15 V to 3.45 V, VO (B port) = 0 to 1.5 V VO VCC = 0, BIAS VCC = 3.3 V, IO = 0 IO VCC = 0, BIAS VCC = 3.15 V to 3.45 V, VO (B port) = 0.6 V 0.95 1.05 V µA –1 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) A B Slow A B Fast OE B Slow OE B 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) B A OE A MIN TYP (2) MAX 3.9 7.2 3.1 8.4 2.6 5.7 2.1 5.8 4.1 7.3 4 9.4 2.9 5.9 4 6.9 Slow 3 Fast 1.5 Slow 4 Fast 2.5 UNIT ns ns ns ns ns ns 0.5 6.7 1.2 4.5 1.1 6.3 1.7 5.1 ns ns Slow (ERC = GND) and Fast (ERC = VCC) All typical values are at VCC = 3.3 V, TA = 25°C. 9 SN74GTLPH1645 16-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER www.ti.com SCES290D – OCTOBER 1999 – REVISED JUNE 2005 PARAMETER MEASUREMENT INFORMATION 500 Ω From Output Under Test S1 1.5 V 6V Open GND CL = 50 pF (see Note A) TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH 500 Ω 12.5 Ω From Output Under Test CL = 30 pF (see Note A) S1 Open 6V GND Test Point LOAD CIRCUIT FOR B OUTPUTS LOAD CIRCUIT FOR A OUTPUTS 3V 1.5 V Input 1.5 V 0V tPLH tPHL VOH 1V Output 1V VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES (A port to B port) 1V 0V tPLH 1.5 V VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES (B port to A port) tPLZ 3V 1.5 V VOL + 0.3 V VOL tPZH VOH Output 1.5 V 0V Output Waveform 1 S1 at 6 V (see Note B) tPHL 1.5 V 1.5 V tPZL 1.5 V 1V Input 3V 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 (A port) 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 10 SN74GTLPH1645 16-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER www.ti.com SCES290D – OCTOBER 1999 – REVISED JUNE 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. 22 Ω 0.25” ZO = 50 Ω 1” Conn. 1” Conn. 1” Conn. Conn. 1” 1” 0.25” 22 Ω 1.5 V 1.5 V 1” Rcvr Rcvr Rcvr Slot 2 Slot 19 Slot 20 Drvr Slot 1 Figure 2. High-Drive Test Backplane 1.5 V 11 Ω From Output Under Test LL = 14 nH Test Point CL = 18 pF Figure 3. High-Drive RLC Network 11 SN74GTLPH1645 16-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER www.ti.com SCES290D – OCTOBER 1999 – REVISED JUNE 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) 12 FROM (INPUT) TO (OUTPUT) EDGE RATE (1) A B Slow A B Fast OE B Slow OE B Fast tr Rise time, B outputs (20% to 80%) tf Fall time, B outputs (80% to 20%) Slow (ERC = GND) and Fast (ERC = VCC) All typical values are at VCC = 3.3 V, TA = 25°C. All values are derived from TI-SPICE models. TYP (2) 4.9 4.9 3.7 3.7 5.1 5.4 4.1 4.1 Slow 2 Fast 1.2 Slow 2.5 Fast 1.8 UNIT ns ns ns ns ns ns PACKAGE OPTION ADDENDUM www.ti.com 14-Oct-2022 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) Samples (4/5) (6) SN74GTLPH1645DGGR ACTIVE TSSOP DGG 56 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 GTLPH1645 Samples SN74GTLPH1645DGVR ACTIVE TVSOP DGV 56 2000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 GL45 Samples (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