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M54HCT240 Datasheet(PDF) 1 Page - STMicroelectronics

Part No. M54HCT240
Description  OCTAL BUS BUFFER WITH 3 STATE OUTPUTS HCT240: INVERTED - HCT241/244 NON INVERTED
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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M54HCT240 Datasheet(HTML) 1 Page - STMicroelectronics

 
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M54HCT240/241/244
M74HCT240/241/244
September 1993
HCT240: INVERTED - HCT241/244 NON INVERTED
OCTAL BUS BUFFER WITH 3 STATE OUTPUTS
B1R
(Plastic Package)
ORDER CODES :
M54HCTXXXF1R
M74HCTXXXM1R
M74HCTXXXB1R
M74HCTXXXC1R
F1R
(Ceramic Package)
M1R
(Micro Package)
C1R
(Chip Carrier)
PIN CONNECTION (top view)
.
HIGH SPEED
tPD = 13 ns (TYP.) at VCC =5V
.
LOW POWER DISSIPATION
ICC =4
µA (MAX.) at TA =25 oC
.
COMPATIBLE WITH TTL OUTPUTS
VIH = 2V (MIN.) VIL = 0.8V (MAX)
.
OUTPUT DRIVE CAPABILITY
15 LSTTL LOADS
.
SYMMETRICAL OUTPUT IMPEDANCE
|IOH|= IOL = 6 mA (MIN)
.
BALANCED PROPAGATION DELAYS
tPLH =tPHL
.
PIN AND FUNCTION COMPATIBLE
WITH 54/74LS240/241/244
DESCRIPTION
The M54/74HCT240, HCT241 and HCT244 are
high speed CMOS OCTAL BUS
BUFFERs
fabricated in silicon gate C
2MOS technology.
They have the same high speed performance of
LSTTL combined with true CMOS low power
consumption. The designer has a choise of select
combination of inverting and non-inverting outputs,
symmetrical G (active low output control) input, and
complementary G and G inputs. Each control input
governs four BUS BUFFERs.
This integrated circuit has input and output
characteristics that are fully compatible with 54/74
LSTTL logic families. M54/74HCT devices are
designed to directly interface HSC
2MOS systems
with TTL and NMOS components.
They are also plug in replacements for LSTTL
devices giving a reduction of power consumption.
These devices are designed to be used with 3 state
memory address drivers, etc.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
HCT244
HCT241
HCT240
1/12


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