Datasheet

ManualsBrandsOKI ManualsLogic ICsLogic IC - Buffer, driver SMD 74 HC 541 SO 20

M54HC540/541

M74HC540/541

October 1993

HC540: INVERTED - HC541 NON INVERTED

OCTAL BUS BUFFER WITH 3 STATE OUTPUTS

B1R

(Plastic Package)

ORDER CODES :

M54HCXXXF1R M74HCXXXM1R

M74HCXXXB1R M74HCXXXC1R

F1R

(Ceramic Package)

M1R

(Micro Package)

C1R

(Chip Carrier)

PIN CONNECTION (top view)

.HIGH SPEED

= 10 ns (TYP.) at V

=5V

.LOW POWER DISSIPATION

=4µA (MAX.) at T

=25

.HIGH NOISE IMMUNITY

NIH

INL

=28%V

(MIN.)

.OUTPUT DRIVE CAPABILITY

15 LSTTL LOADS

.SYMMETRICAL OUTPUT IMPEDANCE

|=I

= 6 mA (MIN)

.BALANCED PROPAGATION DELAYS

PLH

PHL

.WIDE OPERATING VOLTAGE RANGE

(OPR) = 2V to 6V

.PIN AND FUNCTION COMPATIBLE

WITH 54/74LS540/541

DESCRIPTION

The M54/74HC540 and HC541 are high speed

CMOS OCTAL BUS BUFFERS (3-STATE)

fabricated in silicon gate C

MOS technology. They

have the same high speed performance of LSTTL

combined with true CMOS low power consumption.

The HC540 isaninverting buffer andHC541 isa 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

output are in the high impedance state. In order to

enhance PC board layout, the HC540 and HC541

offers a pinout having inputs and outputs on

opposite sides of the package.

All inputs are equipped with protection circuits

against static discharge and transient excess

voltage.

HC541HC540

1/12

Summary of content (12 pages)

PAGE 1
M54HC540/541 M74HC540/541 OCTAL BUS BUFFER WITH 3 STATE OUTPUTS HC540: INVERTED - HC541 NON INVERTED . . . . . . . . HIGH SPEED tPD = 10 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION o ICC = 4 µA (MAX.) at TA = 25 C HIGH NOISE IMMUNITY VNIH = VINL = 28 % VCC (MIN.
PAGE 2
M54/M74HC540/541 CHIP CARRIER HC540 HC541 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION (HC540) PIN No SYMBOL 1, 19 1G, G2 2, 3, 4, 5, 6, 7, 8, 9 18, 17, 16, 15, 14, 13, 12, 11 10 A1 to A8 Data Inputs Y1 to Y8 Bus Outputs GND Ground (0V) 20 V CC Positive Supply Voltage 2/12 NAME AND FUNCTION Output Enable Inputs PIN DESCRIPTION (HC541) PIN No SYMBOL 1, 19 1G, G2 2, 3, 4, 5, 6, 7, 8, 9 18, 17, 16, 15, 14, 13, 12, 11 10 A1 to A8 Data Inputs Y1 to Y8 Bus Outputs GND Ground (0
PAGE 3
M54/M74HC540/541 IEC LOGIC SYMBOLS HC540 HC541 TRUTH TABLE INPUT G1 H X OUTPUT G2 X H An X X Yn (HC540) Z Z Yn (HC541) Z Z L L L L H L H L H L X: ”H” or ”L” Z: High impedance CIRCUIT SCHEMATIC (Per Circuit) HC540 HC541 3/12
PAGE 4
M54/M74HC540/541 ABSOLUTE MAXIMUM RATINGS Symbol Value Unit VCC VI Supply Voltage DC Input Voltage -0.5 to +7 -0.5 to VCC + 0.5 V V VO DC Output Voltage -0.5 to VCC + 0.
PAGE 5
M54/M74HC540/541 DC SPECIFICATIONS Test Conditions Symbol VIH V IL Parameter High Level Input Voltage Low Level Input Voltage Value VCC (V) TA = 25 oC 54HC and 74HC Min. Typ. Max. 2.0 1.5 1.5 1.5 4.5 6.0 3.15 4.2 3.15 4.2 3.15 4.2 High Level Output Voltage 0.5 0.5 0.5 4.5 1.35 1.35 1.35 2.0 4.5 6.0 4.5 VOL Low Level Output Voltage 6.0 2.0 4.5 6.0 4.5 6.0 II IOZ ICC Input Leakage Current 3 State Output Off State Current Quiescent Supply Current 1.8 1.8 Unit V 2.0 6.
PAGE 6
M54/M74HC540/541 AC ELECTRICAL CHARACTERISTICS (C L = 50 pF, Input t r = tf = 6 ns) Test Conditions o Symbol Parameter VCC (V) CL (pF) tTLH tTHL Output Transition Time 2.0 4.5 50 Propagation Delay Time 6.0 2.0 4.5 6.0 tPLH tPHL tPZL tPZH tPLZ tPHZ CIN CPD (*) Output Enable Time Output Disable Time Input Capacitance Power Dissipation Capacitance 2.0 4.5 6.0 2.0 4.5 TA = 25 C 54HC and 74HC Min. 50 150 50 RL = 1KΩ 6.0 2.0 4.5 6.0 150 RL = 1KΩ 2.0 4.5 6.
PAGE 7
M54/M74HC540/541 SWITCHING CHARACTERISTICS TEST CIRCUIT HC540 HC541 7/12
PAGE 8
M54/M74HC540/541 Plastic DIP20 (0.25) MECHANICAL DATA mm DIM. MIN. a1 0.254 B 1.39 TYP. inch MAX. MIN. TYP. MAX. 0.010 1.65 0.055 0.065 b 0.45 0.018 b1 0.25 0.010 D 25.4 1.000 E 8.5 0.335 e 2.54 0.100 e3 22.86 0.900 F 7.1 0.280 I 3.93 0.155 L Z 3.3 0.130 1.34 0.
PAGE 9
M54/M74HC540/541 Ceramic DIP20 MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 25 0.984 B 7.8 0.307 D E 3.3 0.5 e3 0.130 1.78 0.020 22.86 0.070 0.900 F 2.29 2.79 0.090 0.110 G 0.4 0.55 0.016 0.022 I 1.27 1.52 0.050 0.060 L 0.22 0.31 0.009 0.012 M 0.51 1.27 0.020 0.050 N1 P Q 4° (min.), 15° (max.) 7.9 8.13 5.71 0.311 0.320 0.
PAGE 10
M54/M74HC540/541 SO20 MECHANICAL DATA mm DIM. MIN. TYP. A a1 inch MAX. MIN. TYP. 2.65 0.10 0.104 0.20 a2 MAX. 0.004 0.007 2.45 0.096 b 0.35 0.49 0.013 0.019 b1 0.23 0.32 0.009 0.012 C 0.50 0.020 c1 45° (typ.) D 12.60 13.00 0.496 0.512 E 10.00 10.65 0.393 0.419 e 1.27 0.050 e3 11.43 0.450 F 7.40 7.60 0.291 0.299 L 0.50 1.27 0.19 0.050 M S 0.75 0.029 8° (max.
PAGE 11
M54/M74HC540/541 PLCC20 MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 9.78 10.03 0.385 0.395 B 8.89 9.04 0.350 0.356 D 4.2 4.57 0.165 0.180 d1 2.54 0.100 d2 0.56 0.022 E 7.37 8.38 0.290 0.330 e 1.27 0.050 e3 5.08 0.200 F 0.38 0.015 G 0.101 0.004 M 1.27 0.050 M1 1.14 0.
PAGE 12
M54/M74HC540/541 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.