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TC74LVXC3245FS
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74LVXC3245FS
Dual Supply Octal Configurable Voltage Interface Bus Transceiver
The TC74LVXC3245FS is a dual supply, advanced high-speed CMOS octal configurable voltage interface bus transceiver fabricated with silicon gate CMOS technology. Designed for use as an interface between a 3.3 V bus and a 3.3V to 5 V bus in mixed 3.3 V/5 V supply systems' it achieves high-speed operation while maintaining the CMOS low power dissipation. It is intended for 2 way asynchronous communication between data busses. The direction of data transmission is determined by the level of the 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 Weight: 0.14 g (typ.) the 3.3-V bus, the B-port with the 3.3V to 5V bus. This device will allow the VCCB voltage source pin and I/O pins on the B port to float when G is "H". All inputs are equipped with protection circuits against static discharge or transient excess voltage.
Features
* * * * Bi-directional interface between 3 V and 5 V buses High-speed: tpd = 8.5 ns (max) (VCCA = 3.3 V, VCCB = 5.0 V) Low power dissipation: ICC = 8 A (max) (Ta = 25C) Symmetrical output impedance: IOUTA = 24 mA (min) IOUTB = 24 mA (min) (VCCA = VCCB = 3.0 V) * * * * Low noise: VOLP = 1.5 V (max) Flexible VCCB operating range Allows B port and VCCB to float simultaneously when G is "H" Package: SSOP (shrink small outline package) Note: Do not apply a signal to any bus pins when it is in the output mode. Damage may result. All floating (high impedance) bus pin must have their input levels fixed by means of pull-up or pull-down resistors.
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TC74LVXC3245FS
Pin Assignment (top view) IEC Logic Symbol
G
(22) (2)
VCCA DIR A1 A2 A3 A4 A5 A6 A7
1 2 3 4 5 6 7 8 9
24 23 22 21 20 19 18 17 16 15 14 13
VCCB NC
G3 3 EN 1 (BA) 3 EN 2 (AB)
DIR
G
B1 B2 B3 B4 B5
A1
(3)
1 2
(21)
B1
A2 A3 A4 A5
(4) (5) (6) (7) (8) (9) (10)
(20) (19) (18) (17) (16) (15) (14)
B2 B3 B4 B5 B6 B7 B8
B6 B7 B8 GND A6 A7 A8
A8 10 GND 11 GND 12
Truth Table
Inputs
G
L L H
DIR L H X
Outputs A=B B=A Z
Function A-Bus Output Input B-Bus Input Output
High impedance
X: Don't care Z: High impedance
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Block Diagram
VCCA VCCB
DIR Logic level converter
G
A1
B1
A8
Same as above block
B8
Absolute Maximum Ratings (Note 1)
Characteristics Supply voltage range (Note 2) DC input voltage (DIR, G ) Symbol VCCA VCCB Rating -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 50 200 200 Unit V
VIN VI/OA
V
DC bus I/O voltage VI/OB Input diode current Output diode current DC output current IIK II/OK IOUTA IOUTB ICCA ICCB PD Tstg
V
mA mA mA
DC VCC/ground current Power dissipation Storage temperature
mA mW
C
180
-65 to 150
Note 1: Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or even destruction. Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum ratings and the operating ranges. Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook ("Handling Precautions"/"Derating Concept and Methods") and individual reliability data (i.e. reliability test report and estimated failure rate, etc). Note 2: Don't supply a voltage to VCCB terminal when VCCA is in the OFF state.
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Operating Ranges (Note)
Characteristics Supply voltage Input voltage Bus I/O voltage Operating temperature (DIR, G ) Symbol VCCA VCCB VIN VI/OA VI/OB Topr Rating 2.7 to 3.6 3.0 to 5.5 0 to VCCA 0 to VCCA 0 to VCCB
-40 to 85
Unit V V V
C
0 to 8 Input rise and fall time dt/dv (VCCA = 2.7 to 3.6 V) 0 to 8 (VCCB = 3.0 to 5.5 V) ns/V
Note: The operating ranges are required to ensure the normal operation of the device. Unused inputs and bus inputs must be tied to either VCC or GND. Please connect both bus inputs and the bus outputs with VCC or GND when the I/O of the bus terminal changes by the function. In this case, please note that the output is not short-circuited.
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TC74LVXC3245FS
Electrical Characteristics DC Characteristics
Characteristics Symbol Ta = 25C Test Condition VCCA (V) VCCB (V) 2.7 VIHA DIR, G , An 3.0 3.6 2.7 VILA DIR, G , An 3.0 3.6 2.7 VIHB Bn 3.0 3.6 2.7 VILB Bn 3.0 3.6 IOH = -100 A IOH = -12 mA
H-level
Ta = -40 to 85C Max

Unit
Min 2.0 2.0 2.0

Typ.

Min 2.0 2.0 2.0

Max

H-level
3.0 3.6 5.5 3.0 3.6 5.5 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
Input voltage (VCCA)
L-level
0.8 0.8 0.8

0.8 0.8 0.8

V
H-level
2.0 2.0 3.85

2.0 2.0 3.85

Input voltage (VCCB)
L-level
0.8 0.8 1.65

0.8 0.8 1.65

V
3.0 3.0 3.0 2.7 2.7 3.0 3.0 2.7 2.7
2.9 2.56 2.35 2.3 2.1

3.0

2.9 2.46 2.25 2.2 2.0

VOHA
IOH = -24 mA VINA = VIHA or VILA VINB = VIHB or VILB IOH = -12 mA IOH = -24 mA IOL = 100 A IOL = 24 mA IOL = 12 mA IOL = 24 mA
Output voltage (VCCA)
V
0.0

0.1 0.36 0.36 0.42
0.1 0.44 0.44 0.5
L-level
VOLA
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DC Characteristics (continued)
Characteristics Symbol Ta = 25C Test Condition VCCA (V) VCCB (V) IOH = -100 A
H-level
Ta = -40 to 85C Max

Unit
Min 2.9 2.56 2.35 3.86

Typ. 3.0

Min 2.9 2.46 2.25 3.76

Max

3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.6 3.6 3.6 3.6 3.6 3.6
3.0 3.0 3.0 4.5 3.0 3.0 4.5 3.6 5.5 3.6 5.5 3.6 5.5
VOHB VINA = VIHA or VILA VINB = VIHB or VILB
IOH = -12 mA IOH = -24 mA IOH = -24 mA IOL = 100 A IOL = 24 mA IOL = 24 mA
Output voltage (VCCB)
V
0.0

0.1 0.36 0.36
0.5 0.5 0.5 0.5 0.1 0.1
0.1 0.44 0.44
5.0 5.0 5.0 5.0 1.0 1.0 A A
L-level
VOLB
3-state output Off-state current
IOZA
VINA = VIHA or VILA VINB = VIHB or VILB VI/OA = VCCA or GND VI/OB = VCCB or GND VIN (DIR, G ) = VCCA or GND PER INPUT:
IOZB
Input leakage current
IIN
ICCT
VINA = VCCA -0.6 V VINA = VCCB -0.6 V An = VCCA or GND Bn = Open,
3.6
3.6
0.35
0.5
mA
Quiescent supply current
ICCA1
G = VCCA DIR = VCCA, VCCB = Open
3.6
Open
5
50
A
ICCA2
VINA = VIHA or VILA VINB = VIHB or VILB VINA = VIHA or VILA VINB = VIHB or VILB
3.6 3.6 3.6 3.6
3.6 5.5 3.6 5.5

5 5 5 8

50 50 50 80
ICCB
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AC Characteristics (input: tr = tf = 3 ns, CL = 50 pF, RL = 500 )
Ta = 25C Characteristics Symbol Test Condition VCCA(V) VCCB(V) Propagation delay time (An Bn) 3-state output enable time ( G Bn) 3-state output disable time ( G Bn) Propagation delay time (Bn An) 3-state output enable time ( G An) 3-state output disable time ( G An) Output to output skew Input capacitance Bus input capacitance tpLH tpHL tpZL tpZH tpLZ tpHZ tpLH tpHL tpZL tpZH tpLZ tpHZ tosLH tosHL CINA CI/O (Note 1) 2.7 ~ 3.6 DIR, G An, Bn AB (DIR = "H") CPDA Power dissipation capacitance (Note 2) CPDB BA (DIR = "L") AB (DIR = "H") BA (DIR = "L") 3.3 0.3 5.0 0.5 Input: Bn Output: An (DIR = "L") 2.7 ~ 3.6 Input: An Output: Bn (DIR = "H") 2.7 ~3.6 5.0 0.5 3.3 0.3 5.0 0.5 3.3 0.3 5.0 0.5 3.3 0.3 5.0 0.5 3.3 0.3 5.0 0.5 3.3 0.3 5.0 0.5 3.3 0.3 5.0 0.5 3.3 0.3 Min

Ta = -40 to 85C Max 8.0 8.5 9.5 10.5 9.5 9.5 7.5 7.5 10.5 10.5 9.5 9.5 1.5 1.5 10

Unit
Typ. 5.7 6.2 6.5 7.4 7.3 6.6 4.6 5.2 7.0 7.0 6.1 6.0

Min 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0

Max 8.5 9.0 10.0 11.5 10.0 10.0 8.0 8.0 11.5 11.5 10.0 10.0 1.5 1.5 10

ns
ns
ns
ns
ns
ns
ns pF pF
5 8 4 38
pF 88 7

Note 1: Parameter guaranteed by design. (tosLH = |tpLHm - tpLHn|, tosHL = |tpHLm - tpHLn|) Note 2: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average operating current can be obtained by the equation: ICC (opr) = CPDVCCfIN + ICC/8 (per bit)
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Noise Characteristics (Ta = 25C, input: tr = tf = 3 ns, CL = 50 pF, RL = 500 )
Characteristics Symbol Test Condition Typ.

VCCA (V) VCCB (V) 3.3 3.3 3.3 3.3 3.3 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0 3.3 5.0
Limit 0.9 0.9
-0.9 -0.9
Unit
Quiet output maximum dynamic Quiet output mimimum dynamic Quiet output maximum dynamic Quiet output mimimum dynamic Minimum high level dynamic input voltage Maximum low level dynamic input Voltage Minimum high level dynamic input voltage Maximum low level dynamic input voltage
VOL (A)
VOLPA
Input: Bn Output: An
VOL (A)
VOLVA
(DIR = "L")
VOL (B)
VOLPB
0.8 1.5
-0.8 -1.2
V
Input: An Output: Bn
3.3 3.3 3.3
VOL (B)
VOLVB
(DIR = "H")
VIH (A)
VIHDA
Input: An
3.3 3.3 3.3 3.3 3.3 3.3 3.3 3.3
2.0 2.0 0.8 0.8

V
VIL (A)
VILDA
Input: An
V
VIH (B)
VIHDB
Input: Bn
2.0 3.5 0.8 1.5
V
VIL (B)
VILDB
Input: Bn
V
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Package Dimensions
Weight: 0.14 g (typ.)
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RESTRICTIONS ON PRODUCT USE
* The information contained herein is subject to change without notice.
20070701-EN
* TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc. * The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.).These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in his document shall be made at the customer's own risk. * The products described in this document shall not be used or embedded to any downstream products of which manufacture, use and/or sale are prohibited under any applicable laws and regulations. * Please contact your sales representative for product-by-product details in this document regarding RoHS compatibility. Please use these products in this document in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances. Toshiba assumes no liability for damage or losses occurring as a result of noncompliance with applicable laws and regulations.
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