SN54LVTH245A, SN74LVTH245A 3.3-V ABT OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS130P – MAY 1992 – REVISED APRIL 1999 D D D D D D DIR A1 A2 A3 A4 A5 A6 A7 A8 GND 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 VCC OE B1 B2 B3 B4 B5 B6 B7 B8 SN54LVTH245A . . . FK PACKAGE (TOP VIEW) A3 A4 A5 A6 A7 OE D SN54LVTH245A . . . J OR W PACKAGE SN74LVTH245A . . . DB, DW, OR PW PACKAGE (TOP VIEW) A2 A1 DIR VCC D State-of-the-Art Advanced BiCMOS Technology (ABT) Design for 3.3-V Operation and Low Static-Power Dissipation Support Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC) Support Unregulated Battery Operation Down to 2.7 V Typical VOLP (Output Ground Bounce) < 0.8 V at VCC = 3.3 V, TA = 25°C Ioff and Power-Up 3-State Support Hot Insertion Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors Latch-Up Performance Exceeds 500 mA Per JESD 17 ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0) Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW) Packages, Ceramic Chip Carriers (FK), Ceramic Flat (W) Packages, and Ceramic (J) DIPs 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 B1 B2 B3 B4 B5 A8 GND B8 B7 B6 D description These octal bus transceivers are designed specifically for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment. These devices are designed for asynchronous communication between data buses. They transmit data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the devices so the buses are effectively isolated. Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. When VCC is between 0 and 1.5 V, the devices are in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. These devices are fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict. The SN54LVTH245A is characterized for operation over the full military temperature range of –55°C to 125°C. The SN74LVTH245A is characterized for operation from –40°C to 85°C. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 1999, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SN54LVTH245A, SN74LVTH245A 3.3-V ABT OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS130P – MAY 1992 – REVISED APRIL 1999 FUNCTION TABLE INPUTS OE OPERATION DIR L L B data to A bus L H A data to B bus H X Isolation logic symbol† 19 OE 1 DIR 2 A1 G3 3EN1[BA] 3EN2[AB] 18 1 B1 2 A2 A3 A4 A5 A6 A7 A8 3 17 4 16 5 15 6 14 7 13 8 12 9 11 B2 B3 B4 B5 B6 B7 B8 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. logic diagram (positive logic) DIR 1 19 A1 2 18 To Seven Other Channels 2 OE POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 B1 SN54LVTH245A, SN74LVTH245A 3.3-V ABT OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS130P – MAY 1992 – REVISED APRIL 1999 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 4.6 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V Voltage range applied to any output in the high-impedance or power-off state, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V Voltage range applied to any output in the high state, VO (see Note 1) . . . . . . . . . . . . . –0.5 V to VCC + 0.5 V Current into any output in the low state, IO: SN54LVTH245A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA SN74LVTH245A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA Current into any output in the high state, IO (see Note 2): SN54LVTH245A . . . . . . . . . . . . . . . . . . . . . . 48 mA SN74LVTH245A . . . . . . . . . . . . . . . . . . . . . . 64 mA Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA Output clamp current, IOK (VO < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA Package thermal impedance, θJA (see Note 3): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115°C/W DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128°C/W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 2. This current flows only when the output is in the high state and VO > VCC. 3. The package thermal impedance is calculated in accordance with JESD 51. recommended operating conditions (see Note 4) SN54LVTH245A SN74LVTH245A MIN MAX MIN MAX 2.7 3.6 2.7 3.6 UNIT VCC VIH Supply voltage VIL VI Low-level input voltage 0.8 0.8 V Input voltage 5.5 5.5 V IOH IOL High-level output current –24 –32 mA Low-level output current 48 64 mA ∆t/∆v Input transition rise or fall rate ∆t/∆VCC TA Power-up ramp rate 200 Operating free-air temperature –55 High-level input voltage 2 Outputs enabled 2 10 V 10 –40 ns/V µs/V 200 125 V 85 °C NOTE 4: All unused control 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. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 SN54LVTH245A, SN74LVTH245A 3.3-V ABT OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS130P – MAY 1992 – REVISED APRIL 1999 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOH II = –18 mA IOH = –100 µA VCC = 2.7 V, IOH = –8 mA IOH = –24 mA VCC = 2 2.7 7V VOL VCC = 3 V VCC = 3.6 V, VCC = 0 or 3.6 V, II A or B ports‡ Ioff VCC = 3.6 V VCC = 0, VCC = 3 V II(hold) MIN VCC = 2.7 V, VCC = 2.7 V to 3.6 V, VCC = 3 V Control inputs SN54LVTH245A TYP† MAX TEST CONDITIONS A or B ports orts VCC = 3.6 V§, SN74LVTH245A TYP† MAX MIN –1.2 VCC–0.2 2.4 –1.2 VCC–0.2 2.4 V V 2 IOH = –32 mA IOL = 100 µA UNIT 2 0.2 0.2 IOL = 24 mA IOL = 16 mA 0.5 0.5 0.4 0.4 IOL = 32 mA IOL = 48 mA 0.5 0.5 V 0.55 IOL = 64 mA VI = VCC or GND 0.55 VI = 5.5 V VI = 5.5 V VI = VCC VI = 0 VI or VO = 0 to 4.5 V VI = 0.8 V VI = 2 V ±1 ±1 10 10 20 20 1 1 –5 –5 ±100 75 75 –75 –75 500 –750 VI = 0 to 3.6 V µA µA µA IOZPU VCC = 0 to 1.5 V, VO = 0.5 V to 3 V, OE = don’t care ±100∗ ±100 µA IOZPD VCC = 1.5 V to 0, VO = 0.5 V to 3 V, OE = don’t care ±100∗ ±100 µA 0.19 0.19 ICC VCC = 3.6 V, IO = 0, VI = VCC or GND Outputs high Outputs low Outputs disabled ∆ICC¶ VCC = 3 V to 3.6 V, One input at VCC – 0.6 V, Other inputs at VCC or GND Ci VI = 3 V or 0 VO = 3 V or 0 Cio 5 5 0.19 0.19 0.2 0.2 4 4 9 9 mA mA pF pF ∗ On products compliant to MIL-PRF-38535, this parameter is not production tested. † All typical values are at VCC = 3.3 V, TA = 25°C. ‡ Unused terminals are at VCC or GND. § This is the bus-hold maximum dynamic current. It is the minimum overdrive current required to switch the input from one state to another. ¶ This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN54LVTH245A, SN74LVTH245A 3.3-V ABT OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS130P – MAY 1992 – REVISED APRIL 1999 switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) SN54LVTH245A PARAMETER FROM (INPUT) TO (OUTPUT) tPLH tPHL A or B B or A tPZH tPZL OE A or B tPHZ tPLZ OE A or B VCC = 3.3 V ± 0.3 V SN74LVTH245A VCC = 2.7 V VCC = 3.3 V ± 0.3 V VCC = 2.7 V MAX MIN TYP† MAX 3.7 4.2 1.2 2.3 3.5 4 0.7 3.7 4.2 1.2 2.1 3.5 4 1.2 5.7 7.4 1.3 3.2 5.5 7.1 1.6 5.7 6.8 1.7 3.4 5.5 6.5 1.8 6.2 6.8 2.2 3.5 5.9 6.5 1.8 5.3 5.5 2.2 3.4 5 5.1 MIN MAX 0.7 MIN MIN UNIT MAX ns ns ns † All typical values are at VCC = 3.3 V, TA = 25°C. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 SN54LVTH245A, SN74LVTH245A 3.3-V ABT OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS130P – MAY 1992 – REVISED APRIL 1999 PARAMETER MEASUREMENT INFORMATION 6V 500 Ω From Output Under Test S1 Open GND CL = 50 pF (see Note A) 500 Ω TEST S1 tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open 6V GND 2.7 V LOAD CIRCUIT Timing Input 1.5 V 0V tw tsu 2.7 V 1.5 V Input 1.5 V th 2.7 V Data Input 1.5 V 1.5 V 0V 0V VOLTAGE WAVEFORMS PULSE DURATION VOLTAGE WAVEFORMS SETUP AND HOLD TIMES 2.7 V 1.5 V Input 1.5 V 0V tPLH VOH 1.5 V VOL tPHL VOH Output tPLZ 3V 1.5 V tPZH 1.5 V VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES INVERTING AND NONINVERTING OUTPUTS 1.5 V 0V Output Waveform 1 S1 at 6 V (see Note B) tPLH 1.5 V 1.5 V tPZL tPHL 1.5 V Output 2.7 V Output Control Output Waveform 2 S1 at GND (see Note B) VOL + 0.3 V VOL tPHZ 1.5 V VOH – 0.3 V VOH ≈0V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES LOW- AND HIGH-LEVEL ENABLING 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 ≤ 2.5 ns, tf ≤ 2.5 ns. D. The outputs are measured one at a time with one transition per measurement. Figure 1. Load Circuit and Voltage Waveforms 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. 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