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HD74LS640P

Renesas
Part Number HD74LS640P
Manufacturer Renesas
Description Octal Bus Transceivers
Published Jul 25, 2021
Detailed Description HD74LS640 Octal Bus Transceivers (inverted 3-state outputs) REJ03D0487–0200 Rev.2.00 Feb.18.2005 This octal bus trans...
Datasheet PDF File HD74LS640P PDF File

HD74LS640P
HD74LS640P

Overview
HD74LS640 Octal Bus Transceivers (inverted 3-state outputs) REJ03D0487–0200 Rev.
2.
00 Feb.
18.
2005 This octal bus transceivers is designed for asynchronous two-way communication between data buses.
The device transmit data from the A bus to the B bus or from the B bus to the A bus depending upon the level at the direction control (DIR) input.
The enable input (G) can be used to disable the device so that the buses are effectively isolated.
Features • Ordering Information Part Name Package Type Package Code (Previous Code) Package Abbreviation HD74LS640P DILP-20 pin PRDP0020AC-B (DP-20NEV) P PRSP0020DD-B HD74LS640FPEL SOP-20 pin (JEITA) (FP-20DAV) FP Note: Please consult the sales office for the above package availability.
Taping Abbreviation (Quantity) — EL (2,000 pcs/reel) Pin Arrangement DIR 1 1A 2 2A 3 3A 4 4A 5 5A 6 6A 7 7A 8 8A 9 GND 10 20 VCC 19 Enable G 18 1B 17 2B 16 3B 15 4B 14 5B 13 6B 12 7B 11 8B (Top view) Function Table Note: Enable G L L H H; high level, L; low level, X; irrelevant Direction Control DIR L H X Rev.
2.
00, Feb.
18.
2005, page 1 of 6 Operation B data to A bus A data to B bus Isolation HD74LS640 Block Diagram Enable G B Direction Control DIR Transceiver (1/8) A Absolute Maximum Ratings Item Symbol Ratings Unit Supply voltage VCC 7 V Input voltage VIN 7 V Power dissipation Storage temperature PT Tstg 400 mW –65 to +150 °C Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
Recommended Operating Conditions Item Supply voltage Output current Operating temperature Symbol VCC IOH IOL Topr Min 4.
75 — — –20 Typ 5.
00 — — 25 Max 5.
25 –15 24 75 Unit V mA mA °C Electrical Characteristics (Ta = –20 to +75 °C) Item Symbol min.
typ.
* max.
Unit Condition Input voltage Hysteresis VIH 2.
0 — — V VIL — — 0.
8 V VT+ – VT– 0.
2 — — V VCC = 4.
75 V Output voltage VOH 2.
4 — 2 — — — V IOH = –3 mA VCC = 4.
75 V, V IOH = –15 mA VIH = 2 V, VIL = 0.
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