M74HCT540 STMICROELECTRONICS [STMicroelectronics], M74HCT540 Datasheet

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M74HCT540

Manufacturer Part Number
M74HCT540
Description
OCTAL BUS BUFFER WITH 3 STATE OUTPUTS HCT540: INVERTED - HCT541 NON INVERTED
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet

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DESCRIPTION
The M54/74HCT540 and HCT541 are high speed
CMOS
fabricated in silicon gate C
have the same high speed performance of LSTTL
combined with true CMOS low power consumption.
The HCT540 is an inverting buffer and HCT541 is a
non inverting buffer.
The 3 STATE control gate operates as a two input
AND such that if either G1 and G2 are high, all eight
outputs are in the high impedance state. In order to
enhance PC board layout, the HCT540 and
HCT541 offers a pinout having inputs and outputs
on opposite sides of the package. All inputs are
equipped with protection circuits against static
PIN CONNECTION (top view)
October 1993
HIGH SPEED
t
LOW POWER DISSIPATION
I
COMPATIBLE WITH TTL OUTPUTS
V
OUTPUT DRIVE CAPABILITY
15 LSTTL LOADS
SYMMETRICAL OUTPUT IMPEDANCE
|I
BALANCED PROPAGATION DELAYS
t
PIN AND FUNCTION COMPATIBLE
WITH 54/74LS540/541
PD
CC
PLH
OH
IH
HCT540
= 10 ns (TYP.) at V
= 4 A (MAX.) at T
= 2V (MIN.) V
| = I
= t
OCTAL
PHL
OL
= 6 mA (MIN)
BUS
IL
= 0.8V (MAX.)
A
CC
2
BUFFERS
= 25
MOS technology. They
OCTAL BUS BUFFER WITH 3 STATE OUTPUTS
= 5V
HCT540: INVERTED - HCT541 NON INVERTED
o
C
(3-STATE)
HCT541
discharge and transient excess voltage.
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
with TTL and NMOS components. They are also
plug in replacements for LSTTL devices giving a
reduction of power consumption.
IT IS PROHIBITED TO APPLY A SIGNAL TO BUS
TERMINAL WHEN IT IS IN OUTPUT MODE.
WHEN A BUS TERMINAL IS FLOATING (HIGH
IMPEDANCE STATE) IT IS REQUESTED TO FIX
THE INPUT LEVEL BY MEANS OF EXTERNAL
PULL DOWN OR PULL UP RESISTOR.
(Plastic Package)
(Micro Package)
M54HCTXXXF1R
M74HCTXXXB1R
M1R
B1R
M54HCT540/541
M74HCT540/541
ORDER CODES :
M74HCTXXXM1R
M74HCTXXXC1R
(Ceramic Package)
(Chip Carrier)
2
C1R
F1R
MOS systems
1/12

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M74HCT540 Summary of contents

Page 1

... PC board layout, the HCT540 and HCT541 offers a pinout having inputs and outputs on opposite sides of the package. All inputs are equipped with protection circuits against static PIN CONNECTION (top view) HCT540 October 1993 M54HCT540/541 M74HCT540/541 B1R (Plastic Package) M1R (Micro Package) ORDER CODES : M54HCTXXXF1R M74HCTXXXB1R discharge and transient excess voltage ...

Page 2

... M54/M74HCT540/541 CHIP CARRIER HCT540 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION (HCT540) PIN No SYMBOL NAME AND FUNCTION 1, 19 G1, G2 Output Enable Inputs Data Inputs 18, 17, 16 Bus Outputs 15, 14, 13, 11 GND Ground (0V Positive Supply Voltage ...

Page 3

... IEC LOGIC SYMBOLS HCT540 TRUTH TABLE INPUT ”H” or ”L” Z: High impedance CIRCUIT SCHEMATIC (Per Circuit) HCT540 M54/M74HCT540/541 HCT541 OUTPUT An Yn (HCT540 HCT541 Yn (HCT541 3/12 ...

Page 4

... M54/M74HCT540/541 ABSOLUTE MAXIMUM RATINGS Symbol Parameter V Supply Voltage Input Voltage Output Voltage Input Diode Current Output Diode Current Output Source Sink Current Per Output Pin Ground Current CC GND CC P Power Dissipation D T Storage Temperature ...

Page 5

... GND 0 0 GND GND Per Input pin 2 0. 2.4V I Other Inputs GND CC M54/M74HCT540/541 Value -55 to 125 C Unit 74HC 54HC Min. Max. Min. Max. 2.0 2.0 V 0.8 0.8 V 4.4 4.4 V 4.13 4.10 0.1 0.1 V 0.33 0 ...

Page 6

... M54/M74HCT540/541 AC ELECTRICAL CHARACTERISTICS (C Test Conditions Symbol Parameter V CC (V) (pF) t Output Transition 4.5 TLH t Time THL t Propagation 4.5 PLH t Delay Time PHL 4.5 150 (for HCT540) t Propagation 4.5 PLH t Delay Time PHL 4.5 150 (for HCT541) t Output Enable 4.5 PZL t Time PZH 4.5 150 t Output Disable 4.5 PLZ t Time PHZ ...

Page 7

... SWITCHING CHARACTERISTICS TEST CIRCUIT HCT540 HCT541 M54/M74HCT540/541 7/12 ...

Page 8

... M54/M74HCT540/541 Plastic DIP20 (0.25) MECHANICAL DATA DIM. MIN. a1 0.254 B 1. 8/12 mm TYP. MAX. MIN. 0.010 1.65 0.055 0.45 0.25 25.4 8.5 2.54 22.86 7.1 3.93 3.3 1.34 inch TYP. MAX. 0.065 0.018 0.010 1.000 0.335 0.100 0.900 0.280 0.155 0.130 0.053 P001J ...

Page 9

... Ceramic DIP20 MECHANICAL DATA mm DIM. MIN. TYP 3.3 E 0.5 e3 22.86 F 2.29 G 0.4 I 1.27 L 0. 7.9 Q M54/M74HCT540/541 inch MAX. MIN. TYP. 25 7.8 0.130 1.78 0.020 0.900 2.79 0.090 0.55 0.016 1.52 0.050 0.31 0.009 1.27 0.020 4 (min.), 15 (max.) 8.13 0.311 5.71 MAX. 0.984 0.307 0.070 0.110 0.022 0.060 0.012 0.050 0.320 0.225 P057H ...

Page 10

... M54/M74HCT540/541 DIM. MIN 0. 0. 12.60 E 10. 7. 10/12 SO20 MECHANICAL DATA mm TYP. MAX. MIN. 2.65 0.20 0.004 2.45 0.49 0.013 0.32 0.009 0.50 45 (typ.) 13.00 0.496 10.65 0.393 1.27 11.43 7.60 0.291 1.27 0.19 0.75 8 (max.) inch TYP. MAX. 0.104 0.007 0.096 0.019 0.012 0.020 0.512 0.419 0.050 0.450 0.299 0.050 0.029 P013L ...

Page 11

... PLCC20 MECHANICAL DATA mm DIM. MIN. TYP. A 9.78 B 8.89 D 4.2 d1 2.54 d2 0.56 E 7.37 e 1.27 e3 5. 1.27 M1 1.14 M54/M74HCT540/541 inch MAX. MIN. TYP. 10.03 0.385 9.04 0.350 4.57 0.165 0.100 0.022 8.38 0.290 0.050 0.200 0.015 0.101 0.050 0.045 MAX. 0.395 0.356 0.180 0.330 0.004 P027A 11/12 ...

Page 12

... M54/M74HCT540/541 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice ...

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