Octal buffer/line driver (3-State)

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Dortha Sparks
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1 FEATURES Octal bus interface Functio similar to the ABT4 Provides ideal interface and increases fan-out of MOS Microprocessors Efficient pinout to facilitate PC board layout 3-State buffer outputs sink 64mA and source 3mA Power-up 3-State atch-up protection exceeds 500mA per Jedec JC40. Std 7 ESD protection exceeds 000 V per MI STD 883 Method 305 and 00 V per Machine Model DESCRIPTION The high-performance BiCMOS device combines low static and dynamic power dissipation with high speed and high output drive. The device is an octal buffer that is ideal for driving bus lines. The outputs are all capable of sinking 64mA and sourcing 3mA. The device features input and outputs on opposite sides of the package to facilitate printed circuit board layout. QUICK REFERENCE DATA SYMBO PARAMETER CONDITIONS T amb = 5 C; GND = TYPICA t P t P Propagation delay An to Yn C = 50pF; V CC = 5V.9 C IN Input capacitance V I = or V CC 4 pf C OUT Output capacitance Outputs disabled; V O = or V CC 7 pf I CC Total supply current Outputs disabled; V CC = 5.5V 500 na ORDERING INFORMATION PACKAGES TEMPERATURE RANGE OUTSIDE NORT AMERICA NORT AMERICA DWG NUMBER 0-Pin Plastic DIP 40 C to +85 C N N SOT46-0-Pin plastic SO 40 C to +85 C D D SOT63-0-Pin Plastic SSOP Type II 40 C to +85 C DB DB SOT339-0-Pin Plastic TSSOP Type I 40 C to +85 C PW PW D SOT360- PIN CONFIGURATION OGIC SYMBO OE0 A0 0 9 V CC OE OE0 OE A0 9 8 Y0 A A A3 A Y0 Y Y Y3 A A A Y Y Y3 A5 A6 A Y4 Y5 Y6 A4 A Y4 Y5 GND 0 Y7 A6 8 Y6 A7 9 Y7 SA000 SA Sep

2 OGIC SYMBO (IEEE/IEC) PIN DESCRIPTION PIN NUMBER SYMBO NAME AND FUNCTION &, 3, 4, 5, 6, 7, 8, 9 A0 A7 Data inputs 9 EN 8, 7, 6, 5, 4, 3,, Y0 Y7 Data outputs , 9 OE0, OE Output enables 0 GND Ground () 0 V CC Positive supply voltage FUNCTION TABE INPUTS OUTPUTS OE0 OE An Yn SA0004 = igh voltage level = ow voltage level = Don t care = igh impedance off state ABSOUTE MAIMUM RATINGS, SYMBO PARAMETER CONDITIONS RATING V CC DC supply voltage 0.5 to +7.0 V I IK DC input diode current V I < 0 8 ma V I DC input voltage 3. to +7.0 V I OK DC output diode current V O < 0 50 ma V OUT DC output voltage 3 output in Off or igh state 0.5 to +5.5 V I OUT DC output current output in ow state 8 ma T stg Storage temperature range 65 to 50 C NOTES:. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditio beyond those indicated under recommended operating conditio is not implied. Exposure to absolute-maximum-rated conditio for extended periods may affect device reliability.. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 50 C. 3. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 996 Sep 0 3

3 RECOMMENDED OPERATING CONDITIONS SYMBO PARAMETER IMITS Min Max V CC DC supply voltage V V I Input voltage 0 V CC V V I igh-level input voltage.0 V V I ow-level Input voltage 0.8 V I O igh-level output current 3 ma I O ow-level output current 64 ma t/ v Input traition rise or fall rate 0 5 /V T amb Operating free-air temperature range C DC EECTRICA CARACTERISTICS SYMBO PARAMETER TEST CONDITIONS T amb = +5 C IMITS T amb = 40 C to +85 C Min Typ Max Min Max V IK Input clamp voltage V CC = 4.5V; I IK = 8mA V V CC = 4.5V; I O = 3mA; V I = V I or V I V V O igh-level output voltage V CC = 5.; I O = 3mA; V I = V I or V I V V CC = 4.5V; I O = 3mA; V I = V I or V I V V O ow-level output voltage V CC = 4.5V; I O = 64mA; V I = V I or V I V I I Input leakage current V CC = 5.5V; V I = GND or 5.5V ±0.0 ± ± µa I OFF Power-off leakage current V CC = 0.; V I or V O 4.5V ±5.0 ±00 ±00 µa I PU /I PD Power-up/down 3-state output current 3 V CC =.; V O = 0.5V; V I = GND or V CC ±5.0 ±50 ±50 µa I O 3-State output igh current V CC = 5.5V; V O =.7V; V I = V I or V I µa I O 3-State output ow current V CC = 5.5V; V O = 0.5V; V I = V I or V I µa I CE Output igh leakage current V CC = 5.5V; V O = 5.5V; V I = GND or V CC µa I O Output current V CC = 5.5V; V O =.5V ma I CC V CC = 5.5V; Outputs igh, V I = GND or V CC µa I CC Quiescent supply current V CC = 5.5V; Outputs ow, V I = GND or V CC ma I CC I CC Additional supply current per input pin V CC = 5.5V; Outputs 3-State; V I = GND or V CC µa Outputs enabled, one input at 3.4V, other inputs at V CC or GND; V CC = 5.5V Outputs 3-State, one data input at 3.4V, other inputs at V CC or GND; V CC = 5.5V Outputs 3-State, one enable input at 3.4V, other inputs at V CC or GND; V CC = 5.5V ma µa ma NOTES:. Not more than one output should be tested at a time, and the duration of the test should not exceed one second.. This is the increase in supply current for each input at 3.4V. 3. This parameter is valid for any V CC between and V with a traition time of up to 0msec. For V CC = V to V CC = 5V 0%, a traition time of up to 00µsec is permitted. 996 Sep 0 4

4 AC CARACTERISTICS GND = ; t R = t F =.5; C = 50pF, R = 500Ω IMITS SYMBO PARAMETER WAVEFORM T amb = +5 C V CC = +5. T amb = 40 C to +85 C V CC = +5. ±0.5V Min Typ Max Min Max t P t P Propagation delay An to Yn t P t P Output enable time to igh and ow level t P t P Output disable time from igh and ow level AC WAVEFORMS =.5V, V IN = GND to 3. An INPUT OEn INPUT t P t P 3.5V Yn OUTPUT t P t P Yn OUTPUT Yn OUTPUT t P t P V O + 0.3V V O V O V O 0.3V SA0008 Waveform. Waveforms Showing the Input (An) to Output (Yn) Propagation Delays SA0006 Waveform. Waveforms Showing the 3-State Output Enable and Disable Times 996 Sep 0 5

5 TEST CIRCUIT AND WAVEFORMS V CC t W 90% 90% AMP (V) PUSE GENERATOR V IN D.U.T. V OUT R 7. NEGATIVE PUSE 0% 0% t T (t F ) t T (t R ) R T C Test Circuit for 3-State Outputs SWITC POSITION TEST SWITC t P closed t P closed All other open R POSITIVE PUSE 90% 90% t T (t R ) t T (t F ) 0% t 0% W =.5V Input Pulse Definition AMP (V) DEFINITIONS R = oad resistor; see AC CARACTERISTICS for value. C = oad capacitance includes jig and probe capacitance; see AC CARACTERISTICS for value. R T = Termination resistance should be equal to OUT of pulse generators. INPUT PUSE REQUIREMENTS FAMIY Amplitude Rep. Rate t W t R t F 74ABT 3. Mz SA Sep 0 6

CONDITIONS T amb = 25 C; GND = 0V

CONDITIONS T amb = 25 C; GND = 0V Octal -type traparent latch (-State) FATURS is flow-through pinout version of 7ABT7 Inputs and outputs on opposite side of package allow easy interface to microprocessors -State output buffers Common output