74ACT240
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74ACT240 - 74ACT240
74ACT240
HIGH SPEED: (TYP.) POWER DISSIPATION: 4µA(MAX.) TA=25°C COMPATIBLE WITH OUTPUTS (MIN.), 0.8V (MAX.) TRANSMISSION LINE DRIVING CAPABILITY SYMMETRICAL OUTPUT IMPEDANCE: |IOH| 24mA (MIN) BALANCED PROPAGATION DELAYS: tPLH tPHL OPERATING VOLTAGE RANGE: (OPR) 4.5V 5.5V FUNCTION COMPATIBLE WITH SERIES IMPROVED LATCH-UP IMMUNITY
TSSOP
ORDER CODES
PACKAGE TSSOP TUBE 74ACT240B 74ACT240M 74ACT240MTR 74ACT240TTR
DESCRIPTION 74ACT240 advanced high-speed CMOS OCTAL BUFFER (3-STATE) fabricated with sub-micron silicon gate double-layer metal wiring C2MOS tecnology. control output governs four BUFFERs. This device designed used with state
memory address drivers, etc. device designed interface directly High Speed CMOS systems with TTL, NMOS CMOS output voltage levels. inputs outputs equipped with protection circuits against static discharge, giving them immunity transient excess voltage.
CONNECTION LOGIC SYMBOLS
April 2001
74ACT240
INPUT OUTPUT EQUIVALENT CIRCUIT DESCRIPTION
SYMBOL NAME FUNCTION Output Enable Input Data Inputs Data Outputs Data Inputs Data Outputs Output Enable Input Ground (0V) Positive Supply Voltage
TRUTH TABLE
INPUTS
Don't Care High Impedance
OUTPUT
ABSOLUTE MAXIMUM RATINGS
Symbol Tstg Supply Voltage Input Voltage Output Voltage Input Diode Current Output Diode Current Output Current Storage Temperature Lead Temperature sec) Parameter Value -0.5 -0.5 -0.5 +150 Unit
IGND Ground Current
Absolute Maximum Ratings those values beyond which damage device occur. Functional operation under these conditions implied.
RECOMMENDED OPERATING CONDITIONS
Symbol dt/dv Supply Voltage Input Voltage Output Voltage Operating Temperature Input Rise Fall Time 5.5V (note Parameter Value Unit ns/V
from 0.8V 2.0V
74ACT240
SPECIFICATIONS
Test Condition Symbol Parameter Level Output Voltage Input Leakage Current High Impedance Output Leakege Current ICC/Input Quiescent Supply Current Dynamic Output Current (note VCC-0.1V VCC-0.1V IO=-50 IO=-50 =-24 =-24 IO=50 IO=50 2.1V VOLD 1.65 VOHD 3.85 3.86 4.86 0.001 0.001 0.36 0.36 25°C Min. Typ. 4.49 5.49 3.76 4.76 0.44 0.44 Max. Value 85°C Min. Max. 125°C Min. Max. Unit
High Level Input Voltage Level Input Voltage High Level Output Voltage
ICCT IOLD IOHD
Maximum test duration 2ms, output loaded time Incident wave switching guaranteed transmission lines with impedances
ELECTRICAL CHARACTERISTICS Input 3ns)
Test Condition Symbol Parameter 25°C Min. Typ. Max. 10.0 Value 85°C Min. Max. 10.5 125°C Min. Max. 10.5 Unit
tPLH tPHL Propagation Delay Time tPZL tPZH Output Enable Time tPLZ tPHZ Output Disable Time
Voltage range 5.0V 0.5V
74ACT240
CAPACITIVE CHARACTERISTICS
Test Condition Symbol Parameter 10MHz 25°C Min. Typ. Max. Value 85°C Min. Max. 125°C Min. Max. Unit
Input Capacitance Output Capacitance Power Dissipation Capacitance (note
defined value IC's internal equivalent capacitance which calculated from operating current consumption without load. (Refer Test Circuit). Average operating current obtained following equation. ICC(opr) ICC/n (per circuit)
TEST CIRCUIT
TEST tPLH, tPHL tPZL, tPLZ tPZH, tPHZ
50pF equivalent (includes probe capacitance) equivalent ZOUT pulse generator (typically
SWITCH Open Open
74ACT240
WAVEFORM PROPAGATION DELAYS (f=1MHz; duty cycle)
WAVEFORM OUTPUT ENABLE DISABLE TIME (f=1MHz; duty cycle)
74ACT240
Plastic DIP-20 (0.25) MECHANICAL DATA
MIN. 1.34 2.54 22.86 3.93 0.130 0.053 0.254 1.39 0.45 0.25 25.4 0.335 0.100 0.900 0.280 0.155 1.65 TYP. MAX. MIN. 0.010 0.055 0.018 0.010 1.000 0.065 inch TYP. MAX.
DIM.
P001J
74ACT240
SO-20 MECHANICAL DATA
DIM. MIN. 7.40 0.50 12.60 10.00 1.27 11.43 7.60 1.27 0.75 (max.) 0.291 0.19 13.00 10.65 0.35 0.23 0.50 (typ.) 0.496 0.393 0.050 0.450 0.299 0.050 0.029 0.512 0.419 0.10 TYP. MAX. 2.65 0.20 2.45 0.49 0.32 0.013 0.009 0.020 0.004 MIN. inch TYP. MAX. 0.104 0.007 0.096 0.019 0.012
P013L
74ACT240
TSSOP20 MECHANICAL DATA
MIN. 0.50 0.05 0.85 0.19 0.09 6.25 0.65 0.60 0.70 0.020 0.10 TYP. MAX. 0.15 0.95 0.30 4.48 0.002 0.335 0.0075 0.0035 0.252 0.246 0.169 0.256 0.252 0.173 0.0256 0.024 0.028 0.004 0.354 MIN. inch TYP. MAX. 0.433 0.006 0.374 0.0118 0.0079 0.260 0.256 0.176
DIM.
IDENTIFICATION
74ACT240
Information furnished believed accurate reliable. However, STMicroelectronics assumes responsibility consequences such information infringe ment patents other righ third parties which result from use. license granted implication otherwise under patent patent rights STMicroelectronics. Specifications mentioned this lication subject change without notice. lication supersedes replaces information previously supplied. STMicroelectronics prod ucts authori critical components life suppo devices systems without express written approval STMicroelectronics. logo registered trademark STMicroelectronics 2001 STMicroelectronics Printed Italy Rights Reserved STMicroelectronics GROUP COMPANIES Australia Brazil China Finland France Germany Hong Kong India Italy Japan Malaysia Malta Morocco Singapore Spain Sweden Swit zerland United Kingdom http://w ww.st.com
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