SN74LVCH322244A 32-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCES405B – JULY 2002 – REVISED APRIL 2005 • FEATURES • • • • • • • Member of the Texas Instruments Widebus+™ Family Operates From 1.65 V to 3.6 V Inputs Accept Voltages to 5.5 V Max tpd of 4.4 ns at 3.3 V Output Ports Have Equivalent 26-Ω Series Resistors, So No External Resistors Are Required Typical VOLP (Output Ground Bounce) < 0.8 V at VCC = 3.3 V, TA = 25°C Typical VOHV (Output VOH Undershoot) > 2 V at VCC = 3.3 V, TA = 25°C • • • • Ioff Supports Partial-Power-Down Mode Operation Supports Mixed-Mode Signal Operation On All Ports (5-V Input/Output Voltage With 3.3-V VCC) Bus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors 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) DESCRIPTION/ORDERING INFORMATION This 32-bit buffer/driver is designed for 1.65-V to 3.6-V VCC operation. The SN74LVCH322244A is designed specifically to improve the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The device can be used as eight 4-bit buffers, four 8-bit buffers, two 16-bit buffers, or one 32-bit buffer. It provides true outputs and symmetrical active-low output-enable (OE) inputs. Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators in a mixed 3.3-V/5-V system environment. The outputs, which are designed to sink up to 12 mA, include equivalent 26-Ω resistors to reduce overshoot and undershoot. To ensure the high-impedance state during power up or power down, 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. Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. ORDERING INFORMATION PACKAGE (1) TA –40°C to 85°C (1) ORDERABLE PART NUMBER LFBGA – GKE Tape and reel LFBGA – ZKE (Pb-free) SN74LVCH322244AKR 74LVCH322244AZKER TOP-SIDE MARKING CG244A Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE (EACH 4-BIT BUFFER) INPUTS OE A OUTPUT Y L H H L L L H X Z 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. Widebus+ is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2002–2005, Texas Instruments Incorporated SN74LVCH322244A 32-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCES405B – JULY 2002 – REVISED APRIL 2005 GKE OR ZKE PACKAGE (TOP VIEW) 1 2 3 4 5 6 A B C D E F G H J K L M N P R T TERMINAL ASSIGNMENTS 2 1 2 3 4 5 6 A 1Y2 1Y1 1OE 2OE 1A1 1A2 B 1Y4 1Y3 GND GND 1A3 1A4 C 2Y2 2Y1 VCC VCC 2A1 2A2 D 2Y4 2Y3 GND GND 2A3 2A4 E 3Y2 3Y1 GND GND 3A1 3A2 F 3Y4 3Y3 VCC VCC 3A3 3A4 G 4Y2 4Y1 GND GND 4A1 4A2 H 4Y3 4Y4 4OE 3OE 4A4 4A3 J 5Y2 5Y1 5OE 6OE 5A1 5A2 K 5Y4 5Y3 GND GND 5A3 5A4 L 6Y2 6Y1 VCC VCC 6A1 6A2 M 6Y4 6Y3 GND GND 6A3 6A4 N 7Y2 7Y1 GND GND 7A1 7A2 P 7Y4 7Y3 VCC VCC 7A3 7A4 R 8Y2 8Y1 GND GND 8A1 8A2 T 8Y3 8Y4 8OE 7OE 8A4 8A3 SN74LVCH322244A 32-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCES405B – JULY 2002 – REVISED APRIL 2005 LOGIC DIAGRAM (POSITIVE LOGIC) 1OE 1A1 1A2 1A3 1A4 2OE 2A1 2A2 2A3 2A4 5OE 5A1 5A2 5A3 5A4 6OE 6A1 6A2 6A3 6A4 A3 3OE A5 A2 A6 A1 B5 B2 B6 B1 1Y1 3A1 1Y2 3A2 1Y3 3A3 1Y4 3A4 A4 4OE C5 C2 C6 C1 D5 D2 D6 D1 2Y1 4A1 2Y2 4A2 2Y3 4A3 2Y4 4A4 J3 7OE J5 J2 J6 J1 K5 K2 K6 K1 5Y1 7A1 5Y2 7A2 5Y3 7A3 5Y4 7A4 J4 8OE L5 L2 L6 L1 M5 M2 M6 M1 6Y1 8A1 6Y2 8A2 6Y3 8A3 6Y4 8A4 H4 E5 E2 E6 E1 F5 F2 F6 F1 3Y1 3Y2 3Y3 3Y4 H3 G5 G2 G6 G1 H6 H1 H5 H2 4Y1 4Y2 4Y3 4Y4 T4 N5 N2 N6 N1 P5 P2 P6 P1 7Y1 7Y2 7Y3 7Y4 T3 R5 R2 R6 R1 T6 T1 T5 T2 8Y1 8Y2 8Y3 8Y4 3 SN74LVCH322244A 32-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCES405B – JULY 2002 – REVISED APRIL 2005 Absolute Maximum Ratings (1) over operating free-air temperature range (unless otherwise noted) MIN MAX VCC Supply voltage range –0.5 6.5 V VI Input voltage range (2) –0.5 6.5 V –0.5 6.5 V state (2) UNIT VO Voltage range applied to any output in the high-impedance or power-off VO Voltage range applied to any output in the high or low state (2) (3) IIK Input clamp current VI < 0 –50 mA IOK Output clamp current VO < 0 –50 mA IO Continuous output current ±50 mA ±100 mA –0.5 VCC + 0.5 Continuous current through each VCC or GND θJA Package thermal Tstg Storage temperature range (1) (2) (3) (4) impedance (4) GKE/ZKE package –65 V 40 °C/W 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. The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed. The value of VCC is provided in the recommended operating conditions table. The package thermal impedance is calculated in accordance with JESD 51-7. Recommended Operating Conditions (1) VCC Supply voltage VIH High-level input voltage Operating Data retention only VCC = 1.65 V to 1.95 V MIN MAX 1.65 3.6 1.5 Low-level input voltage VI 1.7 VCC = 2.7 V to 3.6 V 2 VO Output voltage IOH High-level output current 0.35 × VCC 0.7 VCC = 2.7 V to 3.6 V 0.8 0 5.5 High or low state 0 VCC 3-state 0 5.5 VCC = 1.65 V –2 VCC = 2.3 V –4 VCC = 2.7 V –8 VCC = 3 V IOL Low-level output current ∆t/∆v Input transition rise or fall rate TA Operating free-air temperature 4 V V V mA –12 VCC = 1.65 V 2 VCC = 2.3 V 4 VCC = 2.7 V 8 VCC = 3 V (1) V VCC = 2.3 V to 2.7 V Input voltage V 0.65 × VCC VCC = 2.3 V to 2.7 V VCC = 1.65 V to 1.95 V VIL UNIT mA 12 –40 10 ns/V 85 °C 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. SN74LVCH322244A 32-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCES405B – JULY 2002 – REVISED APRIL 2005 Electrical Characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC IOH = –100 µA 1.65 V to 3.6 V IOH = –2 mA VOH II 2.3 V 1.7 2.7 V 2.2 IOH = –6 mA 3V 2.4 IOH = –8 mA 2.7 V 2 IOH = –12 mA 3V 2 IOL = 100 µA 1.65 V to 3.6 V 0.2 1.65 V 0.45 2.3 V 0.7 IOH = –4 mA IOL = 4 mA 0.4 IOL = 6 mA 3V 0.55 IOL = 8 mA 2.7 V 0.6 IOL = 12 mA 3V 0.8 3.6 V 1.65 V VI = 0.7 V µA (2) 45 2.3 V VI = 1.7 V VI = 0.8 V VI = 0 to 3.6 V (3) µA –45 75 3V VI = 2 V –75 3.6 V ±500 Ioff VI or VO = 5.5 V 0 ±10 µA IOZ VO = 0 to 5.5 V 3.6 V ±10 µA ICC ∆ICC (4) ±5 V (2) VI = 1.07 V (1) (2) (3) V 2.7 V VI = 0 to 5.5 V UNIT VCC – 0.2 1.2 VI = 0.58 V II(hold) TYP (1) MAX 1.65 V IOL = 2 mA VOL MIN VI = VCC or GND IO = 0 3.6 V ≤ VI ≤ 5.5 V (4) One input at VCC – 0.6 V, 40 3.6 V Other inputs at VCC or GND 40 2.7 V to 3.6 V 500 µA µA Ci VI = VCC or GND 3.3 V 5.5 pF Co VO = VCC or GND 3.3 V 6 pF All typical values are at VCC = 3.3 V, TA = 25°C. This information was not available at the time of publication. 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 applies in the disabled state only. Switching Characteristics over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1) PARAMETER tpd (1) FROM (INPUT) TO (OUTPUT) A VCC = 1.8 V ± 0.15 V VCC = 2.5 V ± 0.2 V VCC = 2.7 V VCC = 3.3 V ± 0.3 V UNIT MIN MAX MIN MAX MIN MAX MIN MAX Y (1) (1) (1) (1) 1 5.6 1.1 4.4 ns (1) (1) (1) 1 6.9 1 5.5 ns (1) (1) (1) 1 6.8 1.8 6.3 ns ten OE Y (1) tdis OE Y (1) This information was not available at the time of publication. 5 SN74LVCH322244A 32-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCES405B – JULY 2002 – REVISED APRIL 2005 Operating Characteristics TA = 25°C TEST CONDITIONS PARAMETER Cpd (1) 6 Power dissipation capacitance per buffer/driver Outputs enabled Outputs disabled This information was not available at the time of publication. f = 10 MHz VCC = 1.8 V VCC = 2.5 V VCC = 3.3 V TYP TYP TYP (1) (1) 35 (1) (1) 4 UNIT pF SN74LVCH322244A 32-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS www.ti.com SCES405B – JULY 2002 – REVISED APRIL 2005 PARAMETER MEASUREMENT INFORMATION VLOAD S1 RL From Output Under Test CL (see Note A) Open GND RL TEST S1 tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open VLOAD GND LOAD CIRCUIT INPUTS VCC 1.8 V ± 0.15 V 2.5 V ± 0.2 V 2.7 V 3.3 V ± 0.3 V VI tr/tf VCC VCC 2.7 V 2.7 V ≤2 ns ≤2 ns ≤2.5 ns ≤2.5 ns VM VLOAD CL RL V∆ VCC/2 VCC/2 1.5 V 1.5 V 2 × VCC 2 × VCC 6V 6V 30 pF 30 pF 50 pF 50 pF 1 kΩ 500 Ω 500 Ω 500 Ω 0.15 V 0.15 V 0.3 V 0.3 V VI Timing Input VM 0V tw tsu VI Input VM VM th VI Data Input VM VM 0V 0V VOLTAGE WAVEFORMS PULSE DURATION VOLTAGE WAVEFORMS SETUP AND HOLD TIMES VI VM Input VM 0V tPLH VM VM VOL tPHL VM VM 0V Output Waveform 1 S1 at VLOAD (see Note B) tPLH tPLZ VLOAD/2 VM tPZH VOH Output VM tPZL tPHL VOH Output VI Output Control VM VOL VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES INVERTING AND NONINVERTING OUTPUTS Output Waveform 2 S1 at GND (see Note B) VOL + V∆ VOL tPHZ VM VOH − V∆ VOH ≈0 V 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. D. The outputs are measured one at a time, with one transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. tPZL and tPZH are the same as ten. G. tPLH and tPHL are the same as tpd. H. All parameters and waveforms are not applicable to all devices. Figure 1. Load Circuit and Voltage Waveforms 7 PACKAGE OPTION ADDENDUM www.ti.com 30-Mar-2005 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty 74LVCH322244AZKER ACTIVE LFBGA ZKE 96 1000 Green (RoHS & no Sb/Br) SN74LVCH322244AKR ACTIVE LFBGA GKE 96 1000 TBD Lead/Ball Finish MSL Peak Temp (3) SNAGCU Level-3-250C-168 HR SNPB Level-3-220C-168 HR (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) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. 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