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Philips Semiconductors
Product specification
Octal inverting buffer (3-State)
74ABT240
FEATURES
* Octal bus interface * 3-State buffers * Output capability: +64mA/-32mA * Latch-up protection exceeds 500mA per Jedec Std 17 * ESD protection exceeds 2000 V per MIL STD 883 Method 3015
and 200 V per Machine Model
DESCRIPTION
The 74ABT240 high-performance BiCMOS device combines low static and dynamic power dissipation with high speed and high output drive. The 74ABT240 device is an octal inverting buffer that is ideal for driving bus lines. The device features two Output Enables (1OE, 2OE), each controlling four of the 3-State outputs.
* Power-up 3-State * Live insertion/extraction permitted
QUICK REFERENCE DATA
SYMBOL tPLH tPHL CIN COUT ICCZ PARAMETER Propagation delay nAx to nYx Input capacitance Output capacitance Total supply current CONDITIONS Tamb = 25C; GND = 0V CL = 50pF; VCC = 5V VI = 0V or VCC Outputs disabled; VO = 0V or VCC Outputs disabled; VCC =5.5V TYPICAL 3.1 4 7 50 UNIT ns pF pF A
ORDERING INFORMATION
PACKAGES 20-Pin Plastic DIP 20-Pin plastic SO 20-Pin Plastic SSOP Type II 20-Pin Plastic TSSOP Type I TEMPERATURE RANGE -40C to +85C -40C to +85C -40C to +85C -40C to +85C OUTSIDE NORTH AMERICA 74ABT240 N 74ABT240 D 74ABT240 DB 74ABT240 PW NORTH AMERICA 74ABT240 N 74ABT240 D 74ABT240 DB 74ABT240PW DH DWG NUMBER SOT146-1 SOT163-1 SOT339-1 SOT360-1
PIN DESCRIPTION
PIN NUMBER 2, 4, 6, 8 11, 13, 15, 17 18, 16, 14, 12 9, 7, 5, 3 1, 19 10 20 SYMBOL 1A0 - 1A3 2A0 - 2A3 1Y0 - 1Y3 2Y0 - 2Y3 1OE, 2OE GND VCC NAME AND FUNCTION Data inputs
PIN CONFIGURATION
1OE
1 2 3 4 5 6 7 8 9
20 19 18 17 16 15 14 13 12 11
VCC 2OE 1Y0 2A0 1Y1 2A1 1Y2 2A2 1Y3 2A3
Data inputs Data outputs Data outputs Output enables Ground (0V) Positive supply voltage
1A0 2Y0 1A1 2Y1 1A2 2Y2 1A3 2Y3
GND 10
SA00034
1996 Sep 10
2
853-1608 17274
Philips Semiconductors
Product specification
Octal inverting buffer (3-State)
74ABT240
LOGIC SYMBOL
2 1A0 4 6 8 1A1 1A2 1A3 1Y0 1Y1 1Y2 1Y3 18
LOGIC SYMBOL (IEEE/IEC)
1 16 14 12 2 4 6 8 2Y0 2Y1 2Y2 2Y3 3 19 5 7 9 13 11 17 15 3 5 7 9 EN 18 16 14 12 EN
1 1OE 17 15 13 11 19 2A0 2A1 2A2 2A3 2OE
SA00035
SA00036
FUNCTION TABLE
INPUTS 1OE L L H H L X Z 1An L H X 2OE L L H 2An L H X OUTPUTS 1Yn H L Z 2Yn H L Z
= High voltage level = Low voltage level = Don't care = High impedance "off" state
ABSOLUTE MAXIMUM RATINGS1, 2
SYMBOL VCC IIK VI IOK VOUT IOUT Tstg PARAMETER DC supply voltage DC input diode current DC input voltage3 DC output diode current DC output voltage3 DC output current Storage temperature range VO < 0 output in Off or High state output in Low state VI < 0 CONDITIONS RATING -0.5 to +7.0 -18 -1.2 to +7.0 -50 -0.5 to +5.5 128 -65 to 150 UNIT V mA V mA V mA C
NOTES: 1. 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 conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 2. 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 150C. 3. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
1996 Sep 10
3
Philips Semiconductors
Product specification
Octal inverting buffer (3-State)
74ABT240
RECOMMENDED OPERATING CONDITIONS
LIMITS SYMBOL VCC VI VIH VIL IOH IOL t/v Tamb DC supply voltage Input voltage High-level input voltage Low-level Input voltage High-level output current Low-level output current Input transition rise or fall rate Operating free-air temperature range 0 -40 PARAMETER Min 4.5 0 2.0 0.8 -32 64 10 +85 Max 5.5 VCC V V V V mA mA ns/V C UNIT
DC ELECTRICAL CHARACTERISTICS
LIMITS SYMBOL PARAMETER TEST CONDITIONS Tamb = +25C Min VIK Input clamp voltage VCC = 4.5V; IIK = -18mA VCC = 4.5V; IOH = -3mA; VI = VIL or VIH VOH High-level output voltage VCC = 5.0V; IOH = -3mA; VI = VIL or VIH VCC = 4.5V; IOH = -32mA; VI = VIL or VIH VOL II IOFF IPU/IPD IOZH IOZL ICEX IO ICCH ICCL ICCZ ICC Additional supply current per input pin2 Quiescent supply current Low-level output voltage Input leakage current Power-off leakage current Power-up/down 3-state output current3 3-State output High current 3-State output Low current Output High leakage current Output current1 VCC = 4.5V; IOL = 64mA; VI = VIL or VIH VCC = 5.5V; VI = GND or 5.5V VCC = 0.0V; VI or VO 4.5V; VCC = 2.1V; VO = 0.5V; VI = GND or VCC; V OE = Don't care VCC = 5.5V; VO = 2.7V; VI = VIL or VIH VCC = 5.5V; VO = 0.5V; VI = VIL or VIH VCC = 5.5V; VO = 5.5V; VI = GND or VCC VCC = 5.5V; VO = 2.5V VCC = 5.5V; Outputs High, VI = GND or VCC VCC = 5.5V; Outputs Low, VI = GND or VCC VCC = 5.5V; Outputs 3-State; VI = GND or VCC Outputs 3-State, one input at 3.4V, other inputs at VCC or GND; VCC = 5.5V -50 2.5 3.0 2.0 Typ -0.9 2.9 3.4 2.4 0.42 0.01 5.0 5.0 5.0 -5.0 5.0 -100 50 24 50 0.5 0.55 1.0 100 50 50 -50 50 -180 250 30 250 1.5 -50 Max -1.2 2.5 3.0 2.0 0.55 1.0 100 50 50 -50 50 -180 250 30 250 1.5 Tamb = -40C to +85C Min Max -1.2 V V V V V A A A A A A mA A mA A mA UNIT
NOTES: 1. Not more than one output should be tested at a time, and the duration of the test should not exceed one second. 2. This is the increase in supply current for each input at 3.4V. 3. This parameter is valid for any VCC between 0V and 2.1V, with a transition time of up to 10msec. From VCC = 2.1V to VCC 5V 10% a transition time of up to 100sec is permitted.
1996 Sep 10
4
Philips Semiconductors
Product specification
Octal inverting buffer (3-State)
74ABT240
AC CHARACTERISTICS
GND = 0V; tR = tF = 2.5ns; CL = 50pF, RL = 500 LIMITS SYMBOL PARAMETER WAVEFORM Min tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation delay nAx to nYx Output enable time to High and Low level Output disable time from High and Low level 1 2 2 1.0 1.6 1.1 1.1 1.8 1.6 Tamb = +25C VCC = +5.0V Typ 2.7 3.5 3.1 4.2 3.7 3.0 Max 4.1 4.3 4.7 5.8 5.7 5.4 Tamb = -40C to +85C VCC = +5.0V 0.5V Min 1.0 1.6 1.1 1.1 1.8 1.6 Max 4.8 4.8 5.2 6.2 6.4 5.8 ns ns ns UNIT
AC WAVEFORMS
VM = 1.5V, VIN = GND to 3.0V
nOE INPUT nAx INPUT VM VM
VM
VM
tPZL
tPLZ
3.5V
tPHL
tPLH
nYx OUTPUT
VM
VOL + 0.3V VOL tPHZ VOH VOH - 0.3V
nYx OUTPUT
VM
VM
tPZH
nYx OUTPUT
VM 0V
SA00037
Waveform 1. Waveforms Showing the Input (nAx) to Output (nYx) Propagation Delays
SA00017
Waveform 2. Waveforms Showing the 3-State Output Enable and Disable Times
1996 Sep 10
5
Philips Semiconductors
Product specification
Octal inverting buffer (3-State)
74ABT240
TEST CIRCUIT AND WAVEFORMS
VCC 7.0V RL 90% NEGATIVE PULSE VM 10% tTHL (tF) CL RL POSITIVE PULSE 10% tW tTLH (tR) 90% 90% VM 10% 0V 10% 0V tTLH (tR) tTHL (tF) AMP (V) tW VM 90% AMP (V)
PULSE GENERATOR
VIN D.U.T. RT
VOUT
Test Circuit for 3-State Outputs
VM
SWITCH POSITION
TEST tPLZ tPZL All other SWITCH closed closed open
VM = 1.5V Input Pulse Definition
DEFINITIONS
RL = Load resistor; see AC CHARACTERISTICS for value. CL = Load capacitance includes jig and probe capacitance; see AC CHARACTERISTICS for value. RT = Termination resistance should be equal to ZOUT of pulse generators.
INPUT PULSE REQUIREMENTS FAMILY Amplitude 74ABT 3.0V Rep. Rate 1MHz tW 500ns tR 2.5ns tF 2.5ns
SA00012
1996 Sep 10
6

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