TC74VCX244FT/FK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74VCX244FT, TC74VCX244FK
Low-Voltage Octal Bus Buffer with 3.6 V Tolerant Inputs and Outputs
The TC74VCX244 is a high performance CMOS octal bus buffer which is guaranteed to operate from 1.2-V to 3.6-V. Designed for use in 1.5V, 1.8 V, 2.5 V or 3.3 V systems, it achieves high speed operation while maintaining the CMOS low power dissipation. It is also designed with over voltage tolerant inputs and outputs up to 3.6 V. This device is non-inverting 3-state buffer having four active-low output enables. When the OE input is high, the outputs are in a high impedance state. This device is designed to be used with 3-state memory address drivers, etc. All inputs are equipped with protection circuits against static discharge.
TC74VCX244FT
TC74VCX244FK
Features
• • Low voltage operation: VCC = 1.2~3.6 V High speed operation: tpd = 3.5 ns (max) (VCC = 3.0~3.6 V) tpd = 4.2 ns (max) (VCC = 2.3~2.7 V) tpd = 8.4 ns (max) (VCC = 1.65~1.95 V ) tpd = 16.8 ns (max) (VCC = 1.4~1.6 V) tpd = 42.0 ns (max) (VCC = 1.2 V) • • 3.6 V tolerant inputs and outputs. Output current: IOH/IOL = ±24 mA (min) (VCC = 3.0 V) IOH/IOL = ±18 mA (min) (VCC = 2.3 V) IOH/IOL = ±6 mA (min) (VCC = 1.65 V) IOH/IOL = ±2mA (min) (VCC = 1.4 V) • • • • • Latch-up performance: −300 mA ESD performance: Machine model ≥ ±200 V Human body model ≥ ±2000 V Package: TSSOP and VSSOP (US) Power down protection is provided on all inputs and outputs. Weight TSSOP20-P-0044-0.65A VSSOP20-P-0030-0.50
: 0.08 g (typ.) : 0.03 g (typ.)
1
2007-10-19
TC74VCX244FT/FK
Pin Assignment (top view) IEC Logic Level
1OE
1 2 4 6 8
EN 18 16 14 12 1Y1 1Y2 1Y3 1Y4
1OE
1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1
1 2 3 4 5 6 7 8 9
20 19 18 17 16 15 14 13 12 11 (top view)
VCC
2OE
1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1
1A1 1A2 1A3 1A4
2OE
2A1 2A2 2A3 2A4
19 11 13 15 17
EN 9 7 5 3 2Y1 2Y2 2Y3 2Y4
GND 10
Truth Table
Inputs
Outputs An L H X L H Z
OE L L H
X: Don’t care Z: High impedance
2
2007-10-19
TC74VCX244FT/FK
Absolute Maximum Ratings (Note 1)
Characteristics Power supply voltage DC input voltage DC output voltage Input diode current Output diode current DC output current Power dissipation DC VCC/ground current Storage temperature Symbol VCC VIN VOUT IIK IOK IOUT PD ICC/IGND Tstg Rating
−0.5~4.6 −0.5~4.6 −0.5~4.6 −0.5~VCC + 0.5 −50 ±50 ±50
Unit V V (Note 2) (Note 3) V mA (Note 4) mA mA mW mA °C
180
±100 −65~150
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: Off-state Note 3: High or low state. IOUT absolute maximum rating must be observed. Note 4: VOUT < GND, VOUT > VCC
Operating Ranges (Note 1)
Characteristics Supply voltage Input voltage Output voltage Symbol VCC VIN VOUT Rating 1.2~3.6
−0.3~3.6
Unit V V (Note 2) (Note 3) (Note 4) (Note 5) (Note 6) (Note 7) °C (Note 8) ns/V mA V
0~3.6 0~VCC
±24
Output current
IOH/IOL
±18 ±6 ±2
Operating temperature Input rise and fall time
Topr dt/dv
−40~85
0~10
Note 1: The operating ranges must be maintained to ensure the normal operation of the device. Unused inputs must be tied to either VCC or GND. Note 2: Off-state Note 3: High or low state Note 4: VCC = 3.0~3.6 V Note 5: VCC = 2.3~2.7 V Note 6: VCC = 1.65~1.95 V Note 7: VCC = 1.4~1.6 V Note 8: VIN = 0.8~2.0 V, VCC = 3.0 V
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2007-10-19
TC74VCX244FT/FK
Electrical Characteristics
< DC Characteristics (Ta = −40~85°C, 2.7 V < VCC = 3.6 V)
Characteristics High level Low level Symbol VIH VIL Test Condition
⎯ ⎯
VCC (V) 2.7~3.6 2.7~3.6 2.7~3.6 2.7 3.0 3.0 2.7~3.6 2.7 3.0 3.0 2.7~3.6 2.7~3.6 0 2.7~3.6 2.7~3.6 2.7~3.6
Min 2.0
⎯
Max
⎯
Unit
Input voltage
0.8
⎯ ⎯ ⎯ ⎯
V
IOH = −100 μA High level VOH VIN = VIH or VIL IOH = −12 mA IOH = −18 mA Output voltage IOH = −24 mA IOL = 100 μA Low level VOL VIN = VIH or VIL IOL = 12 mA IOL = 18 mA IOL = 24 mA Input leakage current 3-state output off-state current Power off leakage current IIN IOZ IOFF ICC
ΔICC
VCC − 0.2 2.2 2.4 2.2
⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯
V
0.2 0.4 0.4 0.55
±5.0 ±10.0 μA μA μA
VIN = 0~3.6 V VIN = VIH or VIL VOUT = 0~3.6 V VIN, VOUT = 0~3.6 V VIN = VCC or GND VCC < (VIN, VOUT) < 3.6 V = = VIH = VCC − 0.6 V (per input)
10.0 20.0
±20.0
Quiescent supply current
μA
750
< < DC Characteristics (Ta = −40~85°C, 2.3 V = VCC = 2.7 V)
Characteristics High level Low level Symbol VIH VIL Test Condition
⎯ ⎯
VCC (V) 2.3~2.7 2.3~2.7 2.3~2.7 2.3 2.3 2.3 2.3~2.7 2.3 2.3 2.3~2.7 2.3~2.7 0 2.3~2.7 2.3~2.7
Min 1.6
⎯
Max
⎯
Unit
Input voltage
0.7
⎯ ⎯ ⎯ ⎯
V
IOH = −100 μA High level Output voltage VOH VIN = VIH or VIL IOH = −6 mA IOH = −12 mA IOH = −18 mA IOL = 100 μA Low level VOL VIN = VIH or VIL IOL = 12 mA IOL = 18 mA Input leakage current 3-state output off-state current Power off leakage current Quiescent supply current IOZ IOFF ICC VIN = 0~3.6 V VIN = VIH or VIL VOUT = 0~3.6 V VIN, VOUT = 0~3.6 V VIN = VCC or GND VCC < (VIN, VOUT) < 3.6 V = =
VCC − 0.2 2.0 1.8 1.7
⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯
V
0.2 0.4 0.6
±5.0 ±10.0 μA μA μA μA
10.0 20.0
±20.0
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2007-10-19
TC74VCX244FT/FK
< DC Characteristics (Ta = −40~85°C, 1.65 V = VCC < 2.3 V)
Characteristics High level Input voltage Low level VIL
⎯
Symbol VIH
Test Condition
⎯
VCC (V) 1.65~2.3 1.65~2.3
Min 0.65 × VCC
⎯
Max
⎯
Unit
0.2 × VCC
⎯ ⎯
V
High level Output voltage Low level Input leakage current 3-state output off-state current Power off leakage current Quiescent supply current
VOH
VIN = VIH or VIL
IOH = −100 μA IOH = −6 mA
1.65~2.3 1.65 1.65~2.3 1.65 1.65~2.3 1.65~2.3 0 1.65~2.3 1.65~2.3
VCC − 0.2 1.25
⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯
V
VOL IIN IOZ IOFF ICC
VIN = VIH or VIL VIN = 0~3.6 V VIN = VIH or VIL VOUT = 0~3.6 V VIN, VOUT = 0~3.6 V VIN = VCC or GND
IOL = 100 μA IOL = 6 mA
0.2 0.3
±5.0 ±10.0 μA μA μA μA
10.0 20.0
±20.0
VCC < (VIN, VOUT) < 3.6 V = =
< DC Characteristics (Ta = −40~85°C, 1.4 V = VCC
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