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74LVT245B Fiches technique(PDF) 2 Page - NXP Semiconductors |
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74LVT245B Fiches technique(HTML) 2 Page - NXP Semiconductors |
2 / 10 page Philips Semiconductors Product specification 74LVT245B 3.3V Octal transceiver with direction pin (3-State) 2 1999 Mar 19 853-2143 21060 FEATURES • 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 resistors to hold unused inputs • Live insertion/extraction permitted • Power-up 3-State • No bus current loading when output is tied to 5V bus • Latch-up protection exceeds 500mA per JEDEC Std 17 • ESD protection exceeds 2000V per MIL STD 883 Method 3015 and 200V per Machine Model DESCRIPTION The LVT245B is a high-performance BiCMOS product designed for VCC operation at 3.3V. This 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. QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS Tamb = 25°C; GND = 0V TYPICAL UNIT tPLH tPHL Propagation delay An to Bn or Bn to An CL = 50pF; VCC = 3.3V 2.4 ns CIN Input capacitance DIR, OE VI = 0V or 3.0V 4 pF CI/O I/O pin capacitance Outputs disabled; VI/O = 0V or 3.0V 10 pF ICCZ Total supply current Outputs disabled; VCC = 3.6V 0.13 mA ORDERING INFORMATION PACKAGES TEMPERATURE RANGE ORDERING INFORMATION DWG NUMBER 20-Pin Plastic SO –40 °C to +85°C 74LVT245B D SOT163-1 20-Pin Plastic SSOP –40 °C to +85°C 74LVT245B DB SOT339-1 20-Pin Plastic TSSOP –40 °C to +85°C 74LVT245B PW SOT360-1 PIN CONFIGURATION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 DIR A0 A1 A2 A3 A4 A5 A6 A7 GND VCC OE B0 B1 B2 B3 B4 B5 B6 B7 SV00014 PIN DESCRIPTION PIN NUMBER SYMBOL NAME AND FUNCTION 1 DIR Direction control input 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) 19 OE Output enable input (active–Low) 10 GND Ground (0V) 20 VCC Positive supply voltage |
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