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74ACT244 Datasheet(PDF) 1 Page - STMicroelectronics

Part No. 74ACT244
Description  OCTAL BUS BUFFER WITH 3 STATE OUTPUTS NON INVERTED
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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74ACT244 Datasheet(HTML) 1 Page - STMicroelectronics

   
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74ACT244
OCTAL BUS BUFFER
WITH 3 STATE OUTPUTS (NON INVERTED)
®
February 1999
s
HIGH SPEED: tPD = 4.5 ns (TYP.) at VCC =5V
s
LOW POWER DISSIPATION:
ICC =8
µA (MAX.) at TA =25 oC
s
COMPATIBLE WITH TTL OUTPUTS
VIH =2V (MIN), VIL = 0.8V (MAX)
s
50
Ω TRANSMISSION LINE DRIVING
CAPABILITY
s
SYMMETRICAL OUTPUT IMPEDANCE:
|IOH|=IOL = 24 mA (MIN)
s
BALANCED PROPAGATION DELAYS:
tPLH
≅ tPHL
s
OPERATING VOLTAGE RANGE:
VCC (OPR) = 4.5V to 5.5V
s
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 244
s
IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The ACT244 is an advanced CMOS OCTAL BUS
BUFFER (3-STATE) fabricated with sub-micron
silicon gate and double-layer metal wiring C
2MOS
technology. It is ideal for low power applications
mantaining high speed operation similar to
equivalent Bipolar Schottky TTL.
G control output governs four BUS BUFFERs.
This device is desibned to be used with 3 state
memory address drivers, etc.
The device is designed to interface directly High
Speed CMOS systems with TTL, NMOS and
CMOS output voltage levels.
All inputs
and
outputs are
equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES :
74ACT244B
74ACT244M
74ACT244T
M
(Micro Package)
B
(Plastic Package)
T
(TSSOP Package)
1/9


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