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74VHCT16240A
16-BIT BUS BUFFER WITH 3-STATE OUTPUTS (INVERTED)
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HIGH SPEED: tPD = 5.6 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 4 A (MAX.) at TA=25C COMPATIBLE WITH TTL OUTPUTS: VIH = 2V (MIN.), VIL = 0.8V (MAX) POWER DOWN PROTECTION ON INPUTS & OUTPUTS SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 8 mA (MIN) BALANCED PROPAGATION DELAYS: tPLH tPHL OPERATING VOLTAGE RANGE: VCC(OPR) = 4.5V to 5.5V IMPROVED LATCH-UP IMMUNITY LOW NOISE: VOLP = 0.9V (MAX.)
TSSOP
ORDER CODES
PACKAGE TSSOP TUBE T&R 74VHCT16240ATTR
PIN CONNECTION
DESCRIPTION The 74VHCT16240A is an advanced high-speed CMOS 16-BIT BUS BUFFER (3-STATE) fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. Any nG output control governs four BUS BUFFERS. Output Enable inputs (nG) tied together give full 16 bit operation. When nG is LOW, the outputs are on. When nG is HIGH, the output are in high impedance state. This device is designed to be used with 3 state memory address drivers, etc. Power down protection is provided on all inputs and outputs and 0 to 7V can be accepted on inputs with no regard to the supply voltage. This device can be used to interface 5V to 3V since all inputs are equipped with TTL threshold All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage.
February 2003
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74VCHT16240A
INPUT EQUIVALENT CIRCUIT IEC LOGIC SYMBOLS
PIN DESCRIPTION
PIN No 1 2, 3, 5, 6 8, 9, 11, 12 13, 14, 16, 17 19, 20, 22, 23 24 25 30, 29, 27, 26 36, 35, 33, 32 41, 40, 38, 37 47, 46, 44, 43 48 4, 10, 15, 21, 28, 34, 39, 45 7, 18, 31, 42 SYMBOL 1G 1Y1 to 1Y4 2Y1 to 2Y4 3Y1 to 3Y4 4Y1 to 4Y4 4G 3G 4A1 to 4A4 3A1 to 3A4 2A1 to 2A4 1A1 to 1A4 2G GND VCC NAME AND FUNCTION Output Enable Input Data Outputs Data Outputs Data Outputs Data Outputs Output Enable Input Output Enable Input Data Input Data Input Data Input Data Input Output Enable Input Ground (0V) Positive Supply Voltage
TRUTH TABLE
INPUTS G L L H
X : Don`t Care Z : High Impedance
OUTPUT An L H X Yn H L Z
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ABSOLUTE MAXIMUM RATINGS
Symbol VCC VI VO VO IIK IOK IO Supply Voltage DC Input Voltage DC Output Voltage (see note 1) DC Output Voltage (see note 2) DC Input Diode Current DC Output Diode Current DC Output Current Parameter Value -0.5 to +7.0 -0.5 to +7.0 -0.5 to +7.0 -0.5 to VCC + 0.5 - 20 20 25 50 -65 to +150 300 Unit V V V V mA mA mA mA C C
ICC or IGND DC VCC or Ground Current Storage Temperature Tstg TL Lead Temperature (10 sec)
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied 1) Output in OFF State 2) High or Low State
RECOMMENDED OPERATING CONDITIONS
Symbol VCC VI VO VO Top dt/dv Supply Voltage Input Voltage Output Voltage (see note 1) Output Voltage (see note 2) Operating Temperature Input Rise and Fall Time (see note 3) (VCC = 5.0 0.5V) Parameter Value 4.5 to 5.5 0 to 5.5 0 to 5.5 0 to VCC -55 to 125 0 to 20 Unit V V V V C ns/V
1) Output in OFF State 2) High or Low State 3) VIN from 0.8V to 2V
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74VCHT16240A
DC SPECIFICATIONS
Test Condition Symbol Parameter VCC (V) 4.5 to 5.5 4.5 to 5.5 4.5 4.5 4.5 4.5 4.5 to 5.5 0 to 5.5 5.5 5.5 0 IO=-50 A IO=-8 mA IO=50 A IO=8 mA VI = VIH or VIL VO = 0V to 5.5V VI = 5.5V or GND VI = VCC or GND One Input at 3.4V, other input at VCC or GND VOUT = 5.5V TA = 25C Min. 2 0.8 4.4 3.94 0.0 0.1 0.36 0.25 0.1 2 1.35 0.5 4.5 4.4 3.8 0.1 0.44 2.5 1.0 20 1.5 5.0 Typ. Max. Value -40 to 85C Min. 2 0.8 4.4 3.7 0.1 0.55 2.5 1.0 20 1.5 5.0 Max. -55 to 125C Min. 2 0.8 Max. V V V V A A A mA A Unit
VIH VIL VOH VOL Ioz
High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage High Impedance Output Leakage Current Input Leakage Current Quiescent Supply Current Additional Worst Case Supply Current Output Leakage Current
II ICC ICC
AC ELECTRICAL CHARACTERISTICS (Input tr = tf = 3ns)
Test Condition Symbol Parameter VCC (*) CL (V) (pF) 5.0 5.0 5.0 5.0 5.0 15 50 15 50 50 TA = 25C Min. Typ. 5.4 7.0 7.7 8.2 8.8 Max. 8.5 9.5 10.4 11.4 11.4 Value -40 to 85C Min. 1.0 1.0 1.0 1.0 1.0 Max. 9.5 10.5 12.0 13.0 13.0 -55 to 125C Min. 1.0 1.0 1.0 1.0 1.0 Max. 10.0 11.0 12.0 13.0 13.0 ns ns ns Unit
(*) Voltage range is 5.0V 0.5V
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+
IOPD
tPLH tPHL tPZL tPZH tPZL tPZH
Propagation Delay Time Output Disable Time Output Enable Time
RL = 1K RL = 1K
74VCHT16240A
CAPACITIVE CHARACTERISTICS
Test Condition Symbol Parameter Min. CIN COUT CPD Input Capacitance Output Capacitance Power Dissipation Capacitance (note 1) TA = 25C Typ. 5 9 21 Max. 10 Value -40 to 85C Min. Max. 10 -55 to 125C Min. Max. 10 pF pF pF Unit
1) CPD is defined as the value of the IC's internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/16 (per Circuit)
DYNAMIC SWITCHING CHARACTERISTICS
Test Condition Symbol Parameter VCC (V) 5.0 TA = 25C Min. Typ. 0.9 1.1 CL = 50 pF 2.0 -0.9 V Max. 1.1 Value -40 to 85C Min. Max. -55 to 125C Min. Max. Unit
VOLP VOLV VIHD
VILD
Dynamic Low Voltage Quiet Output (note 1, 2) Dynamic High Voltage Input (note 1, 3) Dynamic Low Voltage Input (note 1, 3)
5.0
5.0
0.8
1) Worst case package. 2) Max number of outputs defined as (n). Data inputs are driven 0V to 3.0V, (n-1) outputs switching and one output at GND. 3) Max number of data inputs (n) switching. (n-1) switching 0V to 3.0V. Inputs under test switching: 3.0V to threshold (V ILD), 0V to threshold (VIHD), f=1MHz.
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74VCHT16240A
TEST CIRCUIT
TEST tPLH, tPHL tPZL, tPLZ tPZH, tPHZ
CL =15/ 50pF or equivalent (includes jig and probe capacitance) RL = R1 = 1K or equivalent RT = ZOUT of pulse generator (typically 50
SWITCH Open VCC GND
WAVEFORM 1: PROPAGATION DELAYS (f=1MHz; 50% duty cycle)
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WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle)
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74VCHT16240A
TSSOP48 MECHANICAL DATA
mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0 0.50 6.0 0.5 BSC 8 0.75 0 0.020 0.17 0.09 12.4 8.1 BSC 6.2 0.236 0.0197 BSC 8 0.030 0.05 0.9 0.27 0.20 12.6 0.0067 0.0035 0.488 0.318 BSC 0.244 TYP MAX. 1.2 0.15 0.002 0.035 0.011 0.0079 0.496 MIN. TYP. MAX. 0.047 0.006 inch
A
A2 A1 b e K c L E
D
E1
PIN 1 IDENTIFICATION
1
7065588C
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74VCHT16240A
Tape & Reel TSSOP48 MECHANICAL DATA
mm. DIM. MIN. A C D N T Ao Bo Ko Po P 8.7 13.1 1.5 3.9 11.9 12.8 20.2 60 30.4 8.9 13.3 1.7 4.1 12.1 0.343 0.516 0.059 0.153 0.468 TYP MAX. 330 13.2 0.504 0.795 2.362 1.197 0.350 0.524 0.067 0.161 0.476 MIN. TYP. MAX. 12.992 0.519 inch
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Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. (c) The ST logo is a registered trademark of STMicroelectronics (c) 2003 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. (c) http://www.st.com
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