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, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C Operating Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +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 VIH VCC = 4.75V, TA = +25°C 2.0 – – V Input Voltage – Low Logic State VIL VCC = 4.75V, TA = +25°C – – 0.8 V Input Current – High Logic State IIH VCC = 5.25V, VIH = 2.4V – – 40 µA Input Current – Low Logic State IIL VCC = 5.25V, VIL = 0.5V, VIL(E) = 0.5V – – –400 µA IIH(E) VCC = 5.25V, VIL(I) = 0.5V, VIH(E) = 2V – – –40 µA Input Current – High Impedance State 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 2.4 – – V Output Voltage – High Logic State VOH VCC = 4.75V, IOH = –5.2mA Output Voltage – Low Logic State VOL IOL = 48mA – – 0.5 V Output Current – High Impedance State IOZ VCC = 5.25V, VOH = 2.4V – – 40 µA VCC = 5.25V, VOH = 0.5V – – –40 µA –40 –80 –115 mA – – 65 59 98 89 Output Short–Circuit Current IOS VCC = 5.25V, VO = 0, Note 1 Power Supply Current NTE6885, NTE6887 NTE6886, NTE6888 ICC VCC = 5.25V Input Clamp Voltage VIC VCC = 4.75V, IIC = –12mA – – –1.5 V Output VCC Clamp Voltage VOC VCC = 0, IOC = 12mA – – 1.5 V Output GND Clamp Voltage VOC VCC = 0, IOC = –12mA – – –1.5 V 5.5 – – V Input Voltage VI mA II = 1mA Note 1. Only one output can be shorted at a time. Switching Characteristics: (VCC = 5V, TA = +25°C unless otherwise specified) Parameter Propagation Delay Time High to Low State Propagation Delay Time Low to High State Transition Time High to Low State Transition Time Low to High State Symbol tPHL tPLH tTHL tTLH NTE6885, NTE6887 NTE6886, NTE6888 Min Typ Max Min Typ Max Unit CL = 50pF 3 – 12 4 – 11 ns CL = 250pF – 16 – – 15 – ns CL = 375pF – 20 – – 18 – ns CL = 500pF – 23 – – 22 – ns CL = 50pF 3 – 13 3 – 10 ns CL = 250pF – 25 – – 22 – ns CL = 375pF – 33 – – 28 – ns CL = 500pF – 42 – – 35 – ns CL = 250pF – 10 – – 10 – ns CL = 375pF – 11 – – 13 – ns CL = 500pF – 14 – – 15 – ns CL = 250pF – 32 – – 28 – ns CL = 375pF – 42 – – 38 – ns CL = 500pF – 60 – – 53 – ns Test Conditions Propagation Delay Time High State to Third State tPHZ(E) CL = 5pF – – 10 – – 10 ns Propagation Delay Time Low State to Third State tPLZ(E) CL = 5pF – – 12 – – 16 ns Propagation Delay Time Third State to High State tPZH(E) CL = 50pF – – 25 – – 22 ns Propagation Delay Time Third State to Low State tPZL(E) CL = 50pF – – 25 – – 24 ns Pin Connection Diagrams and Truth Tables NTE6885 NTE6886 Enable 1 1 16 VCC 15 Enable 2 Input A 2 Output A 3 14 Input F Input B 4 13 Output F Output B 5 12 Input E Input C 6 11 Output E Output C 7 10 Input D GND 8 L L H H L H X Z H L X H H X Enable 2 Enable 1 Output L L H L L H L L H X Z Z H L X Z Z H H X Z L H Z X = = = = Low Logic State High Logic State Third (High Impedance) State Don’t Care NTE6887 15 Enable 2 14 Input F 13 Output F 12 Input E 11 Output E Output C 7 10 Input D GND 8 Enable 9 Output D Input Enable 4 1 16 VCC 15 Enable 2 Input A 2 Output A 3 14 Input F Input B 4 13 Output F Output B 5 12 Input E Input C 6 11 Output E Output C 7 10 Input D GND 8 Output Enable 9 Output D Input Output L L L L L H L H H L H L X Z X Z H L H Z X NTE6888 16 VCC Input C 6 9 Output D Input Low Logic State High Logic State Third (High Impedance) State Don’t Care Output B 5 10 Input D GND 8 L Input B 4 11 Output E Output C 7 L Output A 3 12 Input E Input C 6 L Input A 2 13 Output F Output B 5 L Enable 4 1 14 Input F Input B 4 Output = = = = 15 Enable 2 Output A 3 Input L 16 VCC Input A 2 9 Output D Enable 2 Enable 1 L H Z X Enable 1 1 = = = = Low Logic State High Logic State Third (High Impedance) State Don’t Care H L H Z X = = = = Low Logic State High Logic State Third (High Impedance) State Don’t Care 16 9 1 8 .260 (6.6) Max .870 (22.0) Max .200 (5.08) Max .100 (2.54) .700 (17.78) .099 (2.5) Min