National Semiconductor LMC6008 Technical data

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LMC6008
8 Channel Buffer

LMC6008 8 Channel Buffer

April 1996

General Description

The LMC6008 octal buffer is designed specifically to buffer
the multi-level voltages going to the inputs of the integrated
circuits. The LMC6008 AC characteristics, including settling
time, are specified for a capacitive load of 0.1 mF for this
reason.

The LMC6008 contains 4 high-speed buffers and 4 low­power buffers. The high-speed buffers can provide an out­put current of at least 250 mA (minimum), and the low-pow­er buffers can provide at least 150 mA (minimum). By includ­ing the 2 types of buffers, the LMC6008 is able to provide
this function while consuming a supply current of only 6.5
mA (maximum). The buffers are a rail-to-rail design, which
typically swing to within 30 mV of either supply.

The LMC6008 also contains a standby function which puts
the buffer into a high-impedance mode. The supply current
in the standby mode is a low 500 mA max. Also, a thermal
limit circuit is included to protect the device from overload
conditions.

Connection Diagram

24-Pin SO

Features

Y

High Output Current:

High Speed Buffers 250 mA min
Low Power Buffers 150 mA min

Y

Slew Rate:

High Speed Buffers 1.7 V/ms
Low Power Buffers 0.85V/ms

Y

Settling Time, C

Y

Wide Input/Output Range 0.1V to V

Y

Supply Voltage Range 5V to 16V

Y

Supply Current 6.5 mA max

Y

Standby Mode Current 500 mA

e

0.1 mF16ms max

L

CC

b

0.1V min

Applications

Y

AMLCD voltage buffering

Y

Multi-voltage buffering

Ordering Information

Package

24-Pin LMC6008IM M24B Rail
Surface Mount

Temperature Range NSC Transport

b

40§Ctoa85§C Drawing Media

LMC6008IMX M24B Tape & Reel

Note: Buffers 1, 3, 5 and 7 are High Speed and
Buffers 2, 4, 6 and 8 are Low Speed.

C

1996 National Semiconductor Corporation RRD-B30M56/Printed in U. S. A.

Top View

TL/H/12321

TL/H/12321– 1

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.

ESD Tolerance (Note 2) 2000V

Voltage at Input Pin V

Voltage at Output Pin V

a

Supply Voltage (V

b

Vb) 16V

Lead Temperature

(soldering, 10 sec.) 260

Storage Temperature Range

Junction Temperature (Note 4) 150§C

Power Dissipation (Note 4) Internally Limited

a

a

0.4V, V

a

a

0.4V, V

b

55§Ctoa150§C

b

b

0.4V

b

b

0.4V

Operating Ratings (Note 1)

a

s

s

V

C/W

§

16V

Supply Voltage 4.5V

Temperature Range

b

20§Ctoa100§C

Thermal Resistance (iJA)

M Package, 24-Pin Surface Mount 50

C

§

DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for T

J

e

25§C, V

Symbol Parameter Conditions

V

OS

A

V

I

B

I

LP

I

LP

V

ERR

V

IH

V

IL

I

IH

I

IL

I

O (STD-BY)

I

CC

I

STD-BY

Input Offset Voltage R

e

V

10 V

O

PP

Input Bias Current 300 nA max

Peak Load Current Hi Speed Buffers

Peak Load Current Lo Speed Buffers

Output Voltage Difference
(Note 9)

Standby Logic
HIgh Voltage

I
Low Voltage

STANDBY

Logic

Standby High Input Current 1.0 mA max

Standby Low Input Current 1.0 mA max

Output Leakage Current V

Supply Current V

Standby Current V

PSRR Power Supply Rejection Ratio 5VkV

V

O

Voltage Output Swing 0.1 V min

e

10 kX 25 mV max

S

e

V

13 V

O

PP

e

V

13 V

O

PP

e

STD-BY

e

Low, V

IL

e

STD-BY

k

CC

CC

e

14.5V and R

e

0.

L

Typ

(Note 5)

LMC6008

Limit

(Note 6)

Units

0.985 V/V

b

250 mA max

a

250 mA min

b

150 mA max

a

150 mA min

35 mV max

3.30 V min

1.80 V max

High 5 mA max

e

7.25V 6.5 mA max

IN

High 500 mA max

14.5V 55 dB min

b

V

0.1 V max

CC

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AC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for T

Symbol Parameter Conditions

J

e

25§C, V

CC

e

14.5V and R

e

0X.

L

Typ

(Note 5)

LMC6008

Limit

(Note 6)

Units

SR Slew Rate Buffers 1, 3, 5, 7 (Note 3) 1.70 V/ms min

Buffers 2, 4, 6, 8 (Note 3) 0.85 V/ms min

t

S

t

ON

t

OFF

PBW Power Bandwidth V

C

L

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions for which the device is
intended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.

Note 2: Human body model, 1.5 kX in series with 100 pF.

Note 3: The Load is a series connection of a 0.1 mF capacitor and a 1X resistor.

Note 4: The maximum power dissipation is a function of T

e

(T

P

D

limit circuit will limit the die temperature to approximately 160

Note 5: Typical Values represent the most likely parametric norm.

Note 6: All limits are guaranteed by testing or statistical analysis.

Note 7: The settling time is measured from the input transition to a point 50 mV of the final value, for both rising and falling transitions. The input swing is 0.5V to

13.5V for buffers 1, 3, 5, 7 and 3.75V to 10.25V for buffers 2, 4, 6, 8. Input rise time should be less than 1 ms.

Note 8: High-Speed Buffers are 1, 3, 5, 7 and Low-Speed Buffers are 2, 4, 6, 8.

Note 9: Output Voltage Difference is the difference between the highest and lowest buffer output voltage when all buffer inputs are at identical voltages.

Settling Time (Notes 3, 7) 16 ms max

Standby Response Time ON 10 ms max

Standby Response Time OFF 10 ms max

e

10 VPPfor Hi-Speed

O

e

V

5VPPfor Lo-Speed KHz min

O

(Note 3)

45

Load Capacitance 0.1 mF max

, iJA, and TA. The maximum allowable power dissipation at any ambient temperature is

b

TA)/iJA, where the junction-to-ambient thermal resistance i

J(max)

J(max)

C. All numbers apply for packages soldered directly into a PC board.

§

e

50§C/W. If the maximum allowable power dissipation is exceeded, the thermal

JA

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Physical Dimensions inches (millimeters) unless otherwise noted

LMC6008 8 Channel Buffer

24-Lead (3.00×Wide) Small Outline Molded Package (M)

Order Number LMC6008IM or LMC6008IMX

NS Package Number M24B

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failure to perform, when properly used in accordance support device or system, or to affect its safety or
with instructions for use provided in the labeling, can effectiveness.
be reasonably expected to result in a significant injury
to the user.

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