M54HC7245M1R Datasheet PDF - ST Microelectronics
| Part Number | M54HC7245M1R | |
| Description | OCTAL BUS TRANSCEIVER (3-STATE):HC7645 NONINVERTING HC7640 INVERTING /HC7643 INVERTING/NONINVERTING | |
| Manufacturers | ST Microelectronics | |
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M54HC7245/7640/7643/7645
M74HC7245/7640/7643/7645
OCTAL BUS TRANSCEIVER (3-STATE): HC7645 NON INVERTING
HC7640 INVERTING , HC7643 INVERTING/NON INVERTING
. HIGH SPEED
tPD = 12 ns (TYP.) at VCC = 5V
. LOW POWER DISSIPATION
ICC = 4 µA (MAX.) at TA = 25 oC
. HIGH NOISE IMMUNITY
VH = 1.1 (TYP.) at VCC = 5V
. OUTPUT DRIVE CAPABILITY
15 LSTTL LOADS
. SYMMETRICAL OUTPUT IMPEDANCE
|IOH| = IOL = 6 mA (MIN)
. BALANCED PROPAGATION DELAYS
tPLH = tPHL
. WIDE OPERATING RANGE
VCC (OPR) = 2V to 6V
. PIN AND FUNCTION COMPATIBLE
WITH 54/74LS245/640/643
DESCRIPTION
B1R
(Plastic Package)
F1R
(Ceramic Package)
M 1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HCXXXXF1R M74HCXXXXM1R
M74HCXXXXB1R M74HCXXXXC1R
The M54/74HC7245 HC7640, HC7643 and HC7645
utilise silicon gate C2MOS technology to achive
operating speeds equivalent to LSTTL devices.
Along with the low power dissipation and high noise
immunity of standads C2MOS integrated circuit, it
possesses the capability to drive 15 LSTTL loads.
These IC’s are intended for two-way asynchronous
communication between data buses, and the
direction of data trasmission is determined by DIR
input. The enable input (G) can be used to disable the
device so that the buses are effectively isolated.
The HC7245/640/7643/7645 have the same pin
configuration and function as the HC245/640/643
and they have a hysteresis characteristics with each
input, so HC7245/7640/7643/7645 can be used as a
line receiver, etc. All input are equipped with
protection circuits against static discharge and
transient excess voltage.
IT IS PROHIBITED TO APPLY A SIGNAL TO A BUS
TERMINAL WHEN IT IS IN OUTPUT MODE AND
WHEN A BUS THERMINAL IS FLOATING (HIGH
IMPEDANCE STATE), IT IS REQUESTED TO FIX
THE INPUT LEVEL BY MEANS OF EXTERNAL
PULL DOWN OR PULL UP RESISTOR.
PIN CONNECTION (top view)
HC7640
HC7643
HC7 645/ HC 72 45
HC7245 is electrically and funcutionally the same as the HC7645
January 1994
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M54/M 74HC 7245/ 7640/7643/7645
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6 ns)
Symbol
Parameter
Test Conditions
VCC
(V)
TA = 25 oC
54HC and 74HC
Min. Typ. Max.
Value
-40 to 85 oC
74HC
Min. Max.
-55 to 125 oC
54HC
Min. Max.
Unit
tTLH Output Transition 2.0
tTHL Time
4.5
25 60 75 90
7 12 15 18 ns
6.0 6 10 13 15
tPLH Propagation
tPHL Delay Time
2.0
4.5
61 125 156 190
15 25 31 38 ns
6.0 13 21 27 32
tPZL Output Enable
tPZH Time
2.0
4.5 RL = 1 KΩ
77 150 188 225
19 30 38 45 ns
6.0 16 26 32 38
tPLZ Output Disable
2.0
tPHZ Time
4.5 RL = 1 KΩ
84 150 188 225
21 30 38 45 ns
6.0 18 26 32 38
CIN Input Capacitance
5 10 10 10 pF
COUT Output
Capacitance
pF
CPD (*) Power Dissipation
Capacitance
pF
(*) 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 operting current can be obtained by the following equation. ICC(opr) = CPD •VCC •fIN + ICC/4 (per Gate)
SWITCHING CHARACTERISTICS TEST WAVEFORM
VCC
GND
VCC
GND
5/10
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for M54HC7245M1R electronic component. |
| Information | Total 10 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ M54HC7245M1R.PDF Datasheet ] | |
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Featured Datasheets
| Part Number | Description | MFRS |
| M54HC7245M1R | The function is OCTAL BUS TRANSCEIVER (3-STATE):HC7645 NONINVERTING HC7640 INVERTING /HC7643 INVERTING/NONINVERTING. ST Microelectronics | |
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