INTEGRATED CIRCUITS 74LVT640 3.
Philips Semiconductors Product specification 3.3V Octal transceiver with direction pin; inverting (3-State) FEATURES 74LVT640 DESCRIPTION • Octal bidirectional bus interface • 3-State buffers • Output capability: +64mA/-32mA • TTL input and output switching levels • Input and output interface capability to systems at 5V supply • Bus-hold data inputs eliminate the need for external pull-up The LVT640 is a high-performance BiCMOS product designed for VCC operation at 3.3V.
Philips Semiconductors Product specification 3.
Philips Semiconductors Product specification 3.3V Octal transceiver with direction pin; inverting (3-State) 74LVT640 RECOMMENDED OPERATING CONDITIONS SYMBOL VCC LIMITS PARAMETER DC supply voltage UNIT MIN MAX 2.7 3.6 V 0 5.5 V VI Input voltage VIH High-level input voltage VIL Input voltage 0.8 V IOH High-level output current –32 mA Low-level output current 32 Low-level output current; current duty cycle ≤ 50%; f ≥ 1kHz 64 IOL 2.
Philips Semiconductors Product specification 3.3V Octal transceiver with direction pin; inverting (3-State) 74LVT640 AC CHARACTERISTICS GND = 0V; tR = tF = 2.5ns; CL = 50pF; RL = 500Ω; Tamb = –40°C to +85°C. LIMITS SYMBOL PARAMETER WAVEFORM VCC = 3.3V +0.3V VCC = 2.7V MIN TYP1 MAX MAX UNIT tPLH tPHL Propagation delay An to Bn or Bn to An NO TAG 1.0 1.0 2.3 2.4 3.7 3.3 4.5 3.1 ns tPZH tPZL Output enable time to High and Low level NO TAG 1.1 1.5 3.5 3.6 5.3 5.3 6.9 6.
Philips Semiconductors Product specification 3.3V Octal transceiver with direction pin; inverting (3-State) 74LVT640 TEST CIRCUIT AND WAVEFORMS 6.0V VCC Open VIN VOUT PULSE GENERATOR RL GND tW 90% NEGATIVE PULSE 90% VM VM 10% 10% D.U.T. RT 0V CL tTHL (tF) RL tTLH (tR) tTLH (tR) tTHL (tF) 90% Test Circuit for 3-State Outputs POSITIVE PULSE AMP (V) 90% VM VM 10% 10% tW SWITCH POSITION TEST SWITCH tPLH/tPHL Open tPLZ/tPZL 6V tPHZ/tPZH GND AMP (V) 0V VM = 1.
Philips Semiconductors Product specification 3.3V Octal transceiver with direction pin; inverting (3-State) SO20: plastic small outline package; 20 leads; body width 7.
Philips Semiconductors Product specification 3.3V Octal transceiver with direction pin; inverting (3-State) SSOP20: plastic shrink small outline package; 20 leads; body width 5.
Philips Semiconductors Product specification 3.3V Octal transceiver with direction pin; inverting (3-State) TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.
Philips Semiconductors Product specification 3.3V Octal transceiver with direction pin; inverting (3-State) 74LVT640 Data sheet status Data sheet status Product status Definition [1] Objective specification Development This data sheet contains the design target or goal specifications for product development. Specification may change in any manner without notice.
