NTE NTE6886, NTE6885, NTE6887 Datasheet

NTE6885 thru NTE6888

Integrated Circuit

Hex 3–State Buffer/Inverter

Description:

The NTE6885 thru NTE6888 series of devices combines three features usually found desirable in
bus–oriented systems: 1) High impedance logic inputs insure that these devices do not seriously load
the bus; 2) Three–state logic configuration allows buffers not being utilized to be effectively removed
from the bus; 3) Schottky technology allows high–speed operation.

While the NTE6885 to NTE6888 are all buffers, the devices differ in that the NTE6885 (non–inverting)
and the NTE6886 (inverting) provide a two–input Enable which controls all six buffers, while the
NTE6887 (non–inverting) and the NTE6888 (inverting) provide two Enable inputs; one controlling
four buffers and the other controlling the remaining two buffers.

These units are well–suited for Address buffers on the M6800 or similar microprocessor application.

Features:

D High Speed: 8.0ns (Typ)
D Three–State Logic Configuration
D Single +5V Power Supply Requirement
D Compatible with 74LS Logic or 6800 Microprocessor Systems
D High Impedance PNP Inputs Assure Minimal Loading of the Bus

Absolute Maximum Ratings: (TA = +25°C unless otherwise specified for ALL devices)

Power Supply Voltage, VCO 8.0V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input Voltage, VI 5.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Ambient Temperature Range, TA 0 to +75°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage Temperature Range, T

stg

–55° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Junction Temperature, T

J

+150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Characteristics: (0°C ≤ TA ≤ 75°C and 4.75V ≤ VCC ≤ 5.25V unless otherwise specified

for ALL devices)

Parameter Symbol Test Conditions Min Typ Max Unit

Input Voltage – High Logic State V

IH

VCC = 4.75V, TA = +25°C 2.0 – – V

Input Voltage – Low Logic State V

IL

VCC = 4.75V, TA = +25°C – – 0.8 V

Input Current – High Logic State I

IH

VCC = 5.25V, VIH = 2.4V – – 40 µA

Input Current – Low Logic State I

IL

VCC = 5.25V, VIL = 0.5V, V

IL(E)

= 0.5V – – –400 µA

Input Current – High Impedance State I

IH(E)

VCC = 5.25V, V

IL(I)

= 0.5V, V

IH(E)

= 2V – – –40 µA

Electrical Characteristics (Cont’d): (0°C ≤ TA ≤ 75°C and 4.75V ≤ VCC ≤ 5.25V unless otherwise

specified for ALL devices)

Parameter Symbol Test Conditions Min Typ Max Unit

Output Voltage – High Logic State V

OH

VCC = 4.75V, IOH = –5.2mA 2.4 – – V

Output Voltage – Low Logic State V

OL

IOL = 48mA – – 0.5 V

Output Current – High Impedance State I

OZ

VCC = 5.25V, VOH = 2.4V – – 40 µA
VCC = 5.25V, VOH = 0.5V – – –40 µA

Output Short–Circuit Current I

OS

VCC = 5.25V, VO = 0, Note 1 –40 –80 –115 mA

Power Supply Current

NTE6885, NTE6887
NTE6886, NTE6888

I

CC

VCC = 5.25V

–
–

655998

89

mA

Input Clamp Voltage V

IC

VCC = 4.75V, IIC = –12mA – – –1.5 V

Output VCC Clamp Voltage V

OC

VCC = 0, IOC = 12mA – – 1.5 V

Output GND Clamp Voltage V

OC

VCC = 0, IOC = –12mA – – –1.5 V

Input Voltage V

I

II = 1mA 5.5 – – V

Note 1. Only one output can be shorted at a time.

Switching Characteristics: (VCC = 5V, TA = +25°C unless otherwise specified)

NTE6885, NTE6887 NTE6886, NTE6888

Parameter Symbol Test Conditions Min Typ Max Min Typ Max Unit

Propagation Delay Time

t

PHL

CL = 50pF 3 – 12 4 – 11 ns

High to Low State

CL = 250pF – 16 – – 15 – ns
CL = 375pF – 20 – – 18 – ns
CL = 500pF – 23 – – 22 – ns

Propagation Delay Time

t

PLH

CL = 50pF 3 – 13 3 – 10 ns

Low to High State

CL = 250pF – 25 – – 22 – ns
CL = 375pF – 33 – – 28 – ns
CL = 500pF – 42 – – 35 – ns

Transition Time High to Low State

t

THL

CL = 250pF – 10 – – 10 – ns
CL = 375pF – 11 – – 13 – ns
CL = 500pF – 14 – – 15 – ns

Transition Time Low to High State

t

TLH

CL = 250pF – 32 – – 28 – ns
CL = 375pF – 42 – – 38 – ns
CL = 500pF – 60 – – 53 – ns

Propagation Delay Time

High State to Third State

t

PHZ(E)CL

= 5pF – – 10 – – 10 ns

Propagation Delay Time

Low State to Third State

t

PLZ(E)CL

= 5pF – – 12 – – 16 ns

Propagation Delay Time

Third State to High State

t

PZH(E)CL

= 50pF – – 25 – – 22 ns

Propagation Delay Time

Third State to Low State

t

PZL(E)CL

= 50pF – – 25 – – 24 ns