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Part: 74LVXC3245TTR
Category:
Logic
-> LVX->HCMOS, 5V Input Tolerant->Low Voltage, Low No
Description: Octal Dual Supply Bus Transceiver
Company: ST Microelectronics, Inc.
Datasheet: Download 74LVXC3245TTR datasheet File size : 110 kB
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Datasheet text preview:
74LVXC3245
OCTAL DUAL SUPPLY BUS TRANSCEIVER
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H IGH SPEED : tPD = 8ns (MAX.) at TA=25°C VCCA = 3.3V, VCCB = 5.0V LOW POWER DISSIPATION: ICCA = ICCB = 5µA(MAX.) at TA=25°C LOW NOISE: VOLP =0.3V (TYP.) at V C C A= 3 . 3 V SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24mA (MIN) BALANCED PROPAGATION DELAYS: tPLH tPHL OPERATING VOLTAGE RANGE: VCCA(OPR) = 2.7V to 3.6V (1.2V Data Retention) VCCB(OPR) = 2.7V to 5.5V (1.2V Data Retention) PIN AND FUNCTION COMPATIBLE WITH 74 SERIES C3245 IMPROVED LATCH-UP IMMUNITY
SOP
TSSOP
ORDER CODES
PACKAGE SOP TSSOP TUBE 74LVXC3245M T&R 74LVXC3245MTR 74LVXC3245TTR
DESCRIPTION The 74LVXC3245 is a dual supply 8 bit configurable low voltage CMOS OCTAL BUS TRANSCEIVER fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. Designed for use as an interface between a 3.3V bus and a 3.3V to 5V bus in a mixed 3.3V/5V supply systems, it achieves high speed operation while maintaining the CMOS low power dissipation. PIN CONNECTION AND IEC LOGIC SYMBOLS
This IC is intended for two-way asynchronous communication between data buses and the direction of data transmission is determined by DIR input. The enable input G can be used to disable the device so that the buses are effectively isolated. The A-port interfaces with the 3V bus, the B-port with the 5V bus. All inputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage.
July 2001
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74LVXC3245
INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
PIN No 2 3, 4, 5, 6, 7, 8, 9, 10 21, 20, 19, 18, 17, 16, 15, 14 22 11, 12, 13 23 1 24 SYMBOL DIR A1 to A8 B1 to B8 NAME AND FUNCTION Directional Control Data Inputs/Outputs Data Inputs/Outputs
G GND NC VC C A VC C B
Output Enable Input Ground (0V) Not Connected Positive Supply Voltage Positive Supply Voltage
TRUTH TABLE
INPUTS G L L H
X : Don't Care Z : High Impedance
FUNCTION OUTPUT DIR L H X A BUS OUTPUT INPUT Z B BUS INPUT OUTPUT Z A=B B=A Z
ABSOLUTE MAXIMUM RATINGS
Symbol VCCA VCCB VI VI/OA VI/OB IIK IOK IOA IOB ICCA ICCB Pd Tstg TL Supply Voltage Supply Voltage DC Input Voltage DC I/O Voltage DC I/O Voltage DC Input Diode Current DC Output Diode Current DC Output Current DC Output Current DC VCC or Ground Current DC VCC or Ground Current Power Dissipation Storage Temperature Lead Temperature (10 sec) Parameter Value -0.5 to +7.0 -0.5 to +7.0 -0.5 to VCCA + 0.5 -0.5 to VCCA + 0.5 -0.5 to VCCB + 0.5 ± 20 ± 50 ± 50 ± 50 ± 200 ± 100 180 -65 to +150 300 Unit V V V V V mA mA mA mA mA mA mW °C °C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied
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74LVXC3245
RECOMMENDED OPERATING CONDITIONS
Symbol VCCA VCCB VI VI/OA VI/OB Top dt/dv Supply Voltage (note 1) Supply Voltage (note 1) Input Voltage I/O Voltage I/O Voltage Operating Temperature Input Rise and Fall Time (note 2) Parameter Value 2.7 to 3.6 2.7 to 5.5 0 to VCCA 0 to VCCA 0 to VCCB -55 to 125 0 to 10 Unit V V V V V °C ns/V
1) VIN from 30% to 70% of VCC 2) VCCA = 2.7 to 3.6V; VCCB = 2.7 to 5.5V;
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74LVXC3245
DC SPECIFICATIONS FOR VCCA
Test Condition Symbol Parameter VCCA VCCB (V) (V) 2.7 3.0 3.6 2.7 3.0 3.6 3.0 3.0 3.0 2.7 2.7 VOLA Low Level Output Voltage 3.0 3.0 2.7 2.7 IIA IOZA Input Leakage Current High Impedance Output Leakage Current Quiescent Supply Current 3.6 3.6 3.0 3.6 5.5 3.0 3.6 5.5 3.0 3.0 3.0 3.0 4.5 3.0 3.0 3.0 4.5 5.5 5.5 IO=-100 µA IO=-12 mA IO=-24 mA IO=-12 mA IO=-24 mA IO=100 µA IO=24 mA IO=12 mA IO=24 mA VI = VCC or GND TA = 25 °C Min. 2.0 2.0 2.0 0.8 0.8 0.8 2.9 2.56 2.35 2.3 2.1 2.99 2.85 2.65 2.5 2.3 0.0 0.21 0.11 0.22 0.1 0.36 0.36 0.42 ± 0.1 ± 0.5 2.9 2.46 2.25 2.2 2.0 0.1 0.44 0.44 0.5 ±1 ±5 Typ. Max. Value -40 to 85 °C -55 to 125°C Unit Min. 2.0 2.0 2.0 0.8 0.8 0.8 2.9 2.46 2.25 2.2 2.0 0.1 0.44 0.44 0.5 ±1 ±5 µA µA V V Max. Min. 2.0 2.0 2.0 0.8 0.8 0.8 Max. V
VIHA
High Level Input Voltage Low Level Input Voltage High Level Output Voltage
VILA
V
VOHA
IC C t A
3.6
ICCtAF
Quiescent VCCA Supply Current as B Port Floats Maximum Quiescent Supply Current / Input (An, DIR, G)
3.6
VIA = VIHA or VILA VIB = VIHB or VILB VI/OA = VCCA or GND 5.5 VIA = VCCA or GND VIB = VCCB or GND Open VIA = VCCA or GND G= DIR = VCCA VIB = Open 5.5 VIA = VCCA - 0.6V VIB = VCCB or GND
5
50
50
µA
5
50
50
µA
ICCtA
3.6
0.35
0.5
0.5
mA
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74LVXC3245
DC SPECIFICATIONS FOR VCCB
Test Condition Symbol Parameter VCCA VCCB (V) (V) 2.7 3.0 3.6 2.7 3.0 3.6 3.0 3.0 3.0 3.0 VOLB Low Level Output Voltage 3.0 3.0 3.0 IIB IOZB Input Leakage Current High Impedance Output Leakage Current Quiescent Supply Current 3.6 3.6 3.0 3.6 5.5 3.0 3.6 5.5 3.0 3.0 3.0 4.5 3.0 3.0 4.5 5.5 5.5 IO=-100 µA IO=-12 mA IO=-24 mA IO=-24 mA IO=100 µA IO=24 mA IO=24 mA VI = VCCA or GND VIA = VIHA or VILA VI/OB = VCCB or GND VIA = VCCA or GND VIB = VCCB or GND VIA = VCCA or GND VIB = VCCB - 2.1V TA = 25 °C Min. 2.0 2.0 3.85 0.8 0.8 1.65 2.9 2.56 2.35 3.86 3.0 2.85 2.65 4.25 0.00 0.21 0.18 0.1 0.36 0.36 ± 0.1 ± 0.5 2.9 2.46 2.25 3.76 0.1 0.44 0.44 ±1 ±5 Typ. Max. Value -40 to 85 °C -55 to 125°C Unit Min. 2.0 2.0 3.85 0.8 0.8 1.65 2.9 2.46 2.25 3.76 0.1 0.44 0.44 ±1 ±5 µA µA V V Max. Min. 2.0 2.0 3.85 0.8 0.8 1.65 Max. V
VIHB
High Level Input Voltage Low Level Input Voltage High Level Output Voltage
VILB
V
VOHB
IC C t B
3.6
5.5
5
50
50
µA
ICCtB
Maximum Quiescent Supply Current / Input
3.6
5.5
1.35
1.5
1.5
mA
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