 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| Ordering number : EN4628 CMOS LSI LC74FCT164245, 74FCT164245T Fast 16-Bit CMOS Bidirectional Transceiver (Supporting 3.3 to 5 V Operation) Overview The LC74FCT164245 and LC74FCT164245T 16-bit 3.3to-5 V translators are fabricated in an advanced twometal-layer CMOS technology. These high-speed lowpower transceivers are designed to be used as interfaces between 3.3 V and 5 V busses in 3.3/5 V dual power supply systems. The use of these products allows system designers to interface TTL-compatible 3.3 V components to 5 V components. The directionality and output enable control in these products is designed to allow them to be used as either two independent 8-bit transceivers or as a single 16-bit transceiver. In use, the A port is interfaced to the 3.3 V bus and the B port to the 5 V bus. The direction control pin (x DIR) controls the data flow direction and the output enable pin (x OE) disables directionality control and disables both ports. These control signals can be driven from either 3.3 V system or 5 V system devices. The LC74FCT164245T is optimal for driving largecapacitance loads and low-impedance loads. These output buffers can also be used as an interface between a dualpower-supply system and external 5 V system equipment. The LC74FCT164245 provides a balanced output drive function that incorporates 25 (typical value) supply terminating resistors in each output to minimize ground bounce. The LC74FCT164245 features an inter-rail output amplitude and a control-type output edge rate. These features aim at improved signal quality. The LC74FCT164245 is optimal for use in on-board bus interfaces, and in particular, memory data buses. * Expanded temperature range: -40 to +85C * VCC1 = 5 V 10%, VCC2 = 3.3 V 0.3 V LC74FCT164245T Features * High drive output levels (IOH: -32 mA, IOL: 40 mA) LC74FCT164245 Features * Balanced output drive: 24 mA * No external resistors are required since series terminated outputs are used. Package Dimensions unit: mm 3163A-SQFP48 [LC74FCT164245, 74FCT164245T] SANYO: SQFP48 Features * * * * * * * * 0.8 m CMOS technology 3.3 V bus to 5 V bus interface Bidirectional data transfer Control inputs can be driven from either 3.3 V or 5 V devices. Inter-rail output amplitude for both 3.3 V and 5 V ports ESD tolerance > 2000 V; MIL-STD-883 (when tested with the 3015 method) ESD tolerance > 200 V; For a machine model with C = 200 pF and R = 0 20 mil center SQFP SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 63095HA(OT) No. 4628-1/8 LC74FCT164245, 74FCT164245T Function Block Diagram Power Supply Operating Sequences Power on: Either apply VCC1 first and then VCC2, or apply both at the same time. Power off: Either turn off VCC2 first and then VCC1, or turn off both at the same time. No. 4628-2/8 LC74FCT164245, 74FCT164245T Pin Functions Pin x OE x DIR x AX x BX Function Output enable input (active low) Direction control input A side input or three-state output B side input or three-state output Specifications Absolute Maximum Ratings*1 Parameter Pin voltage referenced to GND Pin voltage referenced to GND Operating temperature Temperature when bias is applied Storage temperature Power dissipation DC output current Symbol VTERM*2 VTERM*3 Topr TBIAS Tstg PT IOUT Conditions Ratings -0.5 to +7.0 -0.5 to VCC1 (VCC2) + 0.5 -40 to +85 -55 to +125 -55 to +125 *4 -60 to +60 Unit V V C C C W mA Note: 1. Applying stresses in excess of the absolute maximum ratings may permanently damage the device. The values specified here are stress ratings only, and do not refer to operation under conditions outside either these conditions or the operating conditions. Operating for extended periods at the absolute maximum ratings may adversely influence device reliability. Unless otherwise specified, pin voltages must not exceed V CC1 (or VCC2) + 0.5 V. 2. Inputs and the VCC1 pin 3. Outputs, I/O pins, and the VCC2 pin 4. See Figure 1. Function Truth Table* Input x OE L L H x DIR L H ! Output Bus B data output to bus A Bus A data output to bus B High-impedance state. Note: * H = High level L = Low level ! = Don't care Figure 1 Capacitances (Ta = 25C) Parameter* Input capacitance I/O capacitance Symbol CIN CI/O Conditions min typ 5.5 4.5 max 8.0 6.0 Unit pF pF Note: * These capacitance values are logic values, and are not tested. No. 4628-3/8 LC74FCT164245, 74FCT164245T DC Electrical Characteristics in the Operating Ranges (A port: 3.3 V) The following conditions apply unless otherwise specified. VCC1 = 5.0 V 10%, VCC2 = 3.3 V 0.3 V Ta = -40 to +85C Parameter Input high level voltage Input low level voltage Input high level current (input pins) Input high level current (I/O pins) Input low level current (input pins) Input low level current (I/O pins) High impedance output current Symbol VIH VIL Conditions*1 Logic high level guaranteed Logic low level guaranteed min 2.0 -0.5 typ*2 max VCC1 + 0.5 +0.8 0.5 IIH VCC2 = max 0.5 IIL VI = GND 0.5 IOZH IOZL VOH VOL ICC2 VCC2 = max VCC2 = min, VIN = VIH or VIL VCC2 = min, VIN = VIH or VIL VCC2 = max, VIN = GND or VCC2 VO = VCC2 VO = GND IOH = -8 mA IOH = -0.1 mA IOL = 24 mA IOL = 0.1 mA 0.35 2.4 VCC2 - 0.2 0.3 0.5 0.2 2.0 3.0 0.5 0.5 A V V V V mA VI = VCC2 0.5 A Unit V V Output high level voltage Output low level voltage Quiescent current Note: 1. Values stipulated in the electrical characteristics for the corresponding product must be used for the test conditions for the maximum and minimum values. 2. Typical values are values for VCC1 = 5.0 V, VCC2 = 3.3 V, and an ambient temperature of +25C. DC Electrical Characteristics in the Operating Ranges (B port: 5 V) The following conditions apply unless otherwise specified. VCC1 = 5.0 V 10%, VCC2 = 3.3 V 0.3 V Ta = -40 to +85C Parameter Input high level voltage Input low level voltage Input high level current (input pins) Input high level current (I/O pins) Input low level current (input pins) Input low level current (I/O pins) High impedance output current (Three-state output pins) Quiescent current Symbol VIH VIL Conditions*1 Logic high level guaranteed Logic low level guaranteed min 2.0 0.8 5 IIH VCC1 = max 5 IIL VI = GND 15 IOZH IOZL ICC VCC1 = max VCC1 = max, VIN = GND or VCC1 VO = 2.7 V VO = 0.5 V 0.08 10 10 1.5 A mA VI = VCC1 15 A typ*2 max Unit V V Note: 1. Values stipulated in the electrical characteristics for the corresponding product must be used for the test conditions for the maximum and minimum values. 2. Typical values are values for VCC1 = 5.0 V, VCC2 = 3.3 V, and an ambient temperature of +25C. LC74FCT164245T Output Drive Characteristics (B port: 5 V) Parameter Symbol Conditions*1 IOH = -3 mA Output high level voltage VOH VOL VCC1 = min, VIN = VIH or VIL VCC1 = min, VIN = VIH or VIL IOH = -15 mA IOH = -32 mA*3 Output low level voltage IOL = 40 mA min 2.5 2.4 2.0 typ*2 3.5 3.5 3.0 0.2 0.55 max Unit V V V V Note: 1. Values stipulated in the electrical characteristics for the corresponding product must be used for the test conditions for the maximum and minimum values. 2. Typical values are values for VCC1 = 5.0 V, VCC2 = 3.3 V, and an ambient temperature of +25C. 3. Do not test more than one output at a time. The test time must not exceed 1 second. No. 4628-4/8 LC74FCT164245, 74FCT164245T LC74FCT164245 Output Drive Characteristics (B port: 5 V) Parameter Output low level current Output high level current Output high level voltage Output low level voltage Symbol IODL IODH VOH VOL Conditions*1 VCC1 = 5 V, VIN = VIH or VIL, VOUT = 1.5 V*3 VCC1 = 5 V, VIN = VIH or VIL, VOUT = 1.5 V*3 VCC1 = min, VIN = VIH or VIL VCC1 = min, VIN = VIH or VIL IOH = -0.1 mA IOH = -24 mA IOL = 24 mA min 60 -60 VCC1 - 0.2 2.4 3.3 0.3 0.55 typ*2 115 -115 max 150 -150 Unit mA mA V V V Note: 1. Values stipulated in the electrical characteristics for the corresponding product must be used for the test conditions for the maximum and minimum values. 2. Typical values are values for VCC1 = 5.0 V, VCC2 = 3.3 V, and an ambient temperature of +25C. 3. Do not test more than one output at a time. The test time must not exceed 1 second. Power Supply Current Characteristics Parameter Quiescent current High-level TTL inputs Symbol ICC Conditions*1 VCC1 = max, VCC2 = max, VIN = VCC2 - 0.6 V*3 VCC1 = max, VCC2 = max, outputs open, x OE = x DIR = GND, toggling a single input, 50% duty cycle VCC1 = max, VCC2 = max, outputs open, fi = 10 MHz, x OE = x DIR = GND, toggling a single bit, 50% duty cycle VCC1 = max, VCC2 = max, outputs open, fi = 2.5 MHz, x OE = x DIR = GND, toggling a 16 bits, 50% duty cycle VIN = VCC2, VIN = GND min typ*2 1.2 max 30 Unit A Operating supply current*4 ICCD 75 120 A/MHz VIN = VCC2 - 0.6 V, VIN = GND 1.2 4.7 mA Total supply current*5 IC VIN = VCC2 - 0.6 V, VIN = GND 3.5 8.5 Note: 1. Values stipulated in the electrical characteristics for the corresponding product must be used for the test conditions for the maximum and minimum values. 2. Typical values are values for VCC1 = 5.0 V, VCC2 = 3.3 V, and at an ambient temperature of +25C. 3. For the TTL drive inputs (VIN = 2.4 V), connect all the other inputs to VCC1 or GND. 4. Although this parameter cannot be directly measured, it is provided for calculating the total power dissipation. 5. IC = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ICC, DHNT + ICCD (fCPNCP/2 + fiNi) ICC = Quiescent current (ICCL, ICCH, and ICCZ) ICC = Supply current for the high-level TTL inputs DH = Duty cycle for the high-level TTL inputs NT = The number of TTL inputs in DH ICCD = Operating current due to input transition pairs (HLH or LHL) fCP = Clock frequency for register devices (zero for non-register devices) NCP = The number of clocks input in fCP fi = Input frequency Ni = The number of inputs in fi. LC74FCT164245/164245T Switching Characteristics in the Operating Ranges Parameter Transmission delay (From A to B or from B to A) Output enable time (From x OE to A or B) Output disable time (From x OE to A or B) Output enable time (From x DIRS to A or B*3) Output disable time (From x DIRS to A or B*3) Symbol tPLH, tPHL tPZH*1, tPZL*1 tPHZ*1, tPLZ*1 tPZH*2, tPZL*2 tPHZ*2, tPLZ*2 Conditions*1 min*1 1.5 1.5 CL = 50 pF, RL = 500 1.5 1.5 1.5 typ max 7.0 12.0 7.5 9.5 7.5 Unit ns ns ns ns ns Note: 1. See the figures for the test circuit and waveforms. 2. Although the minimum values are guaranteed, the transmission delay is not tested. 3. This parameter is guaranteed but not tested. No. 4628-5/8 LC74FCT164245, 74FCT164245T Pin Assignment Test Circuit and Waveform Diagrams Test Circuit for All Outputs Switch Positions Test Open drain, Disable low level, Enable low level Disable high level, Enable high level All other tests Switch 6.0 V GND Open Definitions: CL = Load capacitance: including the jig and probe capacitances RT = Terminating resistance: equivalent to the pulse generator's Zout. No. 4628-6/8 LC74FCT164245, 74FCT164245T Setup, Hold, and Release Timing Transmission Delay Pulse Width No. 4628-7/8 LC74FCT164245, 74FCT164245T Enable and Disable Timing Note: 1. These diagrams are for the input enable low level and the input control disable high level cases. 2. Pulse generator setup for all pulses: rate 1.0 MHz, Zo 50 , tf 2.5 ns, tr 2.5 ns s No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. s Anyone purchasing any products described or contained herein for an above-mentioned use shall: Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. s Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of June, 1995. Specifications and information herein are subject to change without notice. PS No. 4628-8/8 |
Price & Availability of LC74FCT164245T
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |