Philips Semiconductors Product data Octal transceiver with direction pin (3-State) FEATURES 74ABT245 DESCRIPTION • Octal bidirectional bus interface • 3-State buffers • Output capability: +64 mA/–32 mA • Latch-up protection exceeds 500 mA per Jedec Std 17 • ESD protection exceeds 2000 V per MIL STD 833 Method 3015 The 74ABT245 high-performance BiCMOS device combines low static and dynamic power dissipation with high speed and high output drive. The 74ABT245 device is an octal transceiver featuring non-inverting 3-State bus compatible outputs in both send and receive directions. The control function implementation minimizes external timing requirements. The device features an Output Enable (OE) input for easy cascading and a Direction (DIR) input for direction control. and 200 V per Machine Model • Power-up 3-State • Live insertion/extraction permitted • Inputs are disabled during 3-State mode QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS Tamb = 25 °C; GND = 0 V tPLH tPHL Propagation delay An to Bn or Bn to An CL = 50 pF; VCC = 5 V TYPICAL UNIT 2.2 2.9 ns pF CIN Input capacitance DIR, OE VI = 0 V or VCC 4 CI/O I/O pin capacitance Outputs disabled; VO = 0 V or VCC 7 pF ICCZ Total supply current Outputs disabled; VCC =5.5 V 50 µA ORDERING INFORMATION PACKAGES TEMPERATURE RANGE PART NUMBER DWG NUMBER 20-Pin plastic SO –40 °C to +85 °C 74ABT245D SOT163-1 20-Pin Plastic SSOP Type II –40 °C to +85 °C 74ABT245DB SOT339-1 20-Pin Plastic TSSOP Type I –40 °C to +85 °C 74ABT245PW SOT360-1 PIN CONFIGURATION PIN DESCRIPTION PIN NUMBER SYMBOL 19 OE 1 DIR 18 B0 2, 3, 4, 5, 6, 7, 8, 9 A0 – A7 Data inputs/outputs (A side) 18, 17, 16, 15, 14, 13, 12, 11 B0 – B7 Data inputs/outputs (B side) NAME AND FUNCTION DIR 1 20 VCC A0 2 A1 3 A2 4 17 B1 A3 5 16 B2 A4 6 15 B3 A5 7 14 B4 19 OE A6 8 13 B5 10 GND Ground (0 V) A7 9 12 B6 20 VCC Positive supply voltage GND 10 11 B7 SA00121 2 Direction control input Output enable input (active-LOW) Philips Semiconductors Product data Octal transceiver with direction pin (3-State) LOGIC SYMBOL 74ABT245 LOGIC SYMBOL (IEEE/IEC) 1 DIR A0 19 19 3 EN1 (BA) 2 1 18 A1 G3 OE 3 EN2 (AB) B0 3 17 A2 B1 4 1 2 16 A3 B2 5 15 A4 B3 6 14 A5 18 2 3 17 4 16 5 15 6 14 7 13 8 12 9 11 B4 7 13 A6 B5 8 12 A7 B6 9 11 B7 SA00122 SA00123 FUNCTION TABLE INPUTS H L X Z INPUTS/OUTPUTS OE DIR An Bn L L An = Bn Inputs L H Inputs Bn = An H X Z Z = High voltage level = Low voltage level = Don’t care = High impedance “off” state ABSOLUTE MAXIMUM RATINGS1, 2 SYMBOL VCC PARAMETER CONDITIONS RATING UNIT –0.5 to +7.0 V –18 mA –1.2 to +7.0 V VO < 0 –50 mA DC supply voltage IIK DC input diode current VI DC input voltage3 IOK DC output diode current VI < 0 VOUT DC output voltage3 output in Off or High state –0.5 to +5.5 V IOUT DC output current output in Low state 128 mA Tstg Storage temperature range –65 to 150 °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 150 °C. 3. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 3 Philips Semiconductors Product data Octal transceiver with direction pin (3-State) 74ABT245 RECOMMENDED OPERATING CONDITIONS LIMITS SYMBOL VCC PARAMETER Min DC supply voltage UNIT Max 4.5 5.5 V 0 VCC V VI Input voltage VIH HIGH-level input voltage VIL LOW-level Input voltage 0.8 V IOH HIGH-level output current –32 mA IOL LOW-level output current 64 mA 0 5 ns/V –40 +85 °C 2.0 ∆t/∆v Input transition rise or fall rate Tamb Operating free-air temperature range V DC ELECTRICAL CHARACTERISTICS LIMITS SYMBOL PARAMETER TEST CONDITIONS Tamb = +25 °C Min VIK Input clamp voltage VOH High-level output voltage VOL Low-level output voltage II Input leakage g current VCC = 4.5 V; IIK = –18 mA Typ Max –0.9 –1.2 Tamb = –40 °C to +85 °C Min UNIT Max –1.2 V VCC = 4.5 V; IOH = –3 mA; VI = VIL or VIH 2.5 2.9 2.5 V VCC = 5.0 V; IOH = –3 mA; VI = VIL or VIH 3.0 3.4 3.0 V VCC = 4.5 V; IOH = –32 mA; VI = VIL or VIH 2.0 2.4 VCC = 4.5 V; IOL = 64 mA; VI = VIL or VIH 0.42 Control pins VCC = 5.5 V; VI = GND or 5.5 V ±0.01 Data pins VCC = 5.5 V; VI = GND or 5.5 V ±5 2.0 0.55 V 0.55 V ±1.0 ±1.0 µA ±100 ±100 µA Power-off leakage current VCC = 0.0 V; VI or VO ≤ 4.5 V ±5.0 ±100 ±100 µA Power-up/down 3-State output current3 VCC = 2.0 V; VO = 0.5 V; VI = GND or VCC; VOE = Don’t care ±5.0 ±50 ±50 µA IIH + IOZH 3-State output High current VCC = 5.5 V; VO = 2.7 V; VI = VIL or VIH 5.0 50 50 µA IIL + IOZL 3-State output Low current VCC = 5.5 V; VO = 0.5 V; VI = VIL or VIH –5.0 –50 –50 µA ICEX Output high leakage current VCC = 5.5 V; VO = 5.5 V; VI = GND or VCC Output current1 VCC = 5.5 V; VO = 2.5 V IOFF IPU/IPD IO ICCH ICCL Quiescent supply current ICCZ ∆ICC Additional supply current per input pin2 50 µA –180 mA 250 250 µA 24 30 30 mA VCC = 5.5 V; Outputs 3-State; VI = GND or VCC 50 250 250 µA Outputs enabled, one input at 3.4 V, other inputs at VCC or GND; VCC = 5.5 V 0.5 1.5 1.5 mA Outputs 3-State, one data input at 3.4 V, other inputs at VCC or GND; VCC = 5.5 V 50 250 250 µA Outputs 3-State, one enable input at 3.4 V, other inputs at VCC or GND; VCC = 5.5 V 0.5 1.5 1.5 mA 5.0 50 –100 –180 VCC = 5.5 V; Outputs HIGH; VI = GND or VCC 50 VCC = 5.5 V; Outputs LOW; VI = GND or VCC –40 –40 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 3.4 V. 3. This parameter is valid for any VCC between 0 V and 2.1 V with a transition time of up to 10 msec. For VCC = 2.1 V to VCC = 5 V"10%, a transition time of up to 100 µsec is permitted. 4 Philips Semiconductors Product data Octal transceiver with direction pin (3-State) 74ABT245 AC CHARACTERISTICS GND = 0 V; tR = tF = 2.5 ns; CL = 50 pF, RL = 500 Ω LIMITS SYMBOL PARAMETER Tamb = +25 °C VCC = +5.0 V WAVEFORM Tamb = –40 °C to +85 °C VCC = +5.0 V ±0.5 V Min Typ Max Min Max UNIT tPLH tPHL Propagation delay An to Bn or Bn to An 1 1.0 1.0 2.2 2.9 4.1 4.2 1.0 1.0 4.6 4.6 ns tPZH tPZL Output enable time to HIGH and LOW level 2 1.3 2.3 3.0 4.0 4.8 5.8 1.3 2.3 5.3 6.3 ns tPHZ tPLZ Output disable time from HIGH and LOW Level 2 1.0 1.0 4.7 4.1 6.2 5.8 1.0 1.0 7.2 6.3 ns AC WAVEFORMS VM = 1.5V, VIN = GND to 3.0V nOE INPUT VM An or Bn INPUT VM VM VM tPZL tPLH tPLZ tPHL VM Bn or An OUTPUT VOL + 0.3V VOL VM VM 3.5V OUTPUT tPHZ tPZH VOH VOH – 0.3V VM SA00124 Waveform 1. Waveforms showing the input to output propagation delays OUTPUT 0V SA00024 Waveform 2. Waveforms showing the 3-State Output Enable and Disable times TEST CIRCUIT AND WAVEFORMS 7V 500 Ω From Output Under Test S1 Open GND 500 Ω CL = 50 pF Load Circuit TEST S1 tpd open tPLZ/tPZL 7V tPHZ/tPZH open DEFINITIONS Load capacitance includes jig and probe capacitance; CL = see AC CHARACTERISTICS for value. SA00012 5