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Details, datasheet, quote on part number:SN54LVTZ245
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Datasheet text preview:
SN54LVTZ245, SN74LVTZ245 3.3-V ABT OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SCBS303C DECEMBER 1993 REVISED JANUARY 1996
D D D D D D D D
State-of-the-Art Advanced BiCMOS Technology (ABT) Design for 3.3-V Operation and Low-Static Power Dissipation High-Impedance State During Power Up and Power Down 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 Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17 Bus-Hold Data Inputs Eliminate the Need for External Pullup/Pulldown Resistors Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW) Packages, Ceramic Chip Carriers (FK), and Ceramic (J) DIPs
SN54LVTZ245 . . . J PACKAGE SN74LVTZ245 . . . DB, DW, OR PW PACKAGE (TOP VIEW)
DIR A1 A2 A3 A4 A5 A6 A7 A8 GND
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
VCC OE B1 B2 B3 B4 B5 B6 B7 B8
SN54LVTZ245 . . . FK PACKAGE (TOP VIEW)
A2 A1 DIR VCC
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.
A3 A4 A5 A6 A7
4 5 6 7 8
3 2 1 20 19 18 17 16 15 14 9 10 11 12 13
OE B1 B2 B3 B4 B5
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 upon 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. The SN74LVTZ245 is available in TI's shrink small-outline package (DB), which provides the same I/O pin count and functionality of standard small-outline packages in less than half the printed-circuit-board area. The SN54LVTZ245 is characterized for operation over the full military temperature range of 55°C to 125°C. The SN74LVTZ245 is characterized for operation from 40°C to 85°C.
FUNCTION TABLE INPUTS OE L L H DIR L H X OPERATION B data to A bus A data to B bus Isolation
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.
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.
Copyright © 1996, Texas Instruments Incorporated
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
A8 GND B8 B7 B6
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SN54LVTZ245, SN74LVTZ245 3.3-V ABT OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SCBS303C DECEMBER 1993 REVISED JANUARY 1996
logic symbol
OE DIR 19 1 G3 3EN1[BA] 3EN2[AB] 1 2 A2 A3 A4 A5 A6 A7 A8 3 4 5 6 7 8 9 17 16 15 14 13 12 11 B2 B3 B4 B5 B6 B7 B8 18 B1
logic diagram (positive logic)
DIR 1 19
OE
A1
2
A1
2
18
B1
To Seven Other Channels
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the DB, DW, PW, and J packages.
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 state or power-off state, VO (see Note 1) . . . . 0.5 V to 7 V Current into any output in the low state, IO: SN54LVTZ245 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA SN74LVTZ245 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA Current into any output in the high state, IO (see Note 2): SN54LVTZ245 . . . . . . . . . . . . . . . . . . . . . . . . 48 mA SN74LVTZ245 . . . . . . . . . . . . . . . . . . . . . . . . 64 mA Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA Output clamp current, IOK (VO < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA Maximum power dissipation at TA = 55°C (in still air) (see Note 3): DB package . . . . . . . . . . . . . . . . . . . . 0.6 W DW package . . . . . . . . . . . . . . . . . . . 1.6 W PW package . . . . . . . . . . . . . . . . . . . 0.7 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 maximum package power dissipation is calculated using a junction temperature of 150°C and a board trace length of 750 mils. For more information, refer to the Package Thermal Considerations application note in the 1994 ABT Advanced BiCMOS Technology Data Book, literature number SCBD002B.
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POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN54LVTZ245, SN74LVTZ245 3.3-V ABT OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
SCBS303C DECEMBER 1993 REVISED JANUARY 1996
recommended operating conditions (see Note 4)
SN54LVTZ245 MIN VCC VIH VIL VI IOH IOL t /v t /VCC Supply voltage High-level input voltage Low-level input voltage Input voltage High-level output current Low-level output current Input transition rise or fall rate Power-up ramp rate Outputs enabled 200 55 125 2.7 2 0.8 5.5 24 48 10 200 40 85 MAX 3.6 SN74LVTZ245 MIN 2.7 2 0.8 5.5 32 64 10 MAX 3.6 UNIT V V V V mA mA ns / V µs / V °C
TA Operating free-air temperature NOTE 4: Unused control inputs must be held high or low to prevent them from floating.
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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