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Details, datasheet, quote on part number:N74F245D
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INTEGRATED CIRCUITS
74F245 Octal transceiver (3-State)
Product specification IC15 Data Handbook 1994 Nov 15
Philips Semiconductors
Philips Semiconductors
Product specification
Octal transceiver (3-State)
74F245
FEATURES
· Octal bidirectional bus interface · 3-State buffer outputs sink 64mA · 15mA source current · Outputs are placed in high impedance state during power-off
conditions
PIN CONFIGURATION
T/R 1 A0 A1 A2 A3 A4 2 3 4 5 6 7 8 9 20 VCC 19 OE 18 B0 17 B1 16 B2 15 B3 14 B4 13 B5 12 B6 11 B7
DESCRIPTION
The 74F245 is an octal transceiver featuring non-inverting 3-State bus compatible outputs in both transmit and receive directions. The B port outputs are capable of sinking 64mA and sourcing 15mA, producing very good capacitive drive characteristics. The device features an Output Enable (OE) input for easy cascading and Transmit/Receive (T/R) input for direction control. The 3-State outputs, B0B7, have been designed to prevent output bus loading if the power is removed from the device. TYPE 74F245 TYPICAL PROPAGATION DELAY 4.0ns
A5 A6 A7
GND 10
SF00198
TYPICAL SUPPLY CURRENT (TOTAL) 70mA
ORDERING INFORMATION
DESCRIPTION 20-Pin Plastic DIP 20-Pin Plastic SO 20-Pin Plastic SSOP Type II COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C N74F245N N74F245D N74F245DB DRAWING NUMBER SOT146-1 SOT163-1 SOT339-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS A0A7, B0B7 OE T/R A0A7 B0B7 Data inputs Output Enable input (active Low) Transmit/Receive input A port outputs B port outputs DESCRIPTION 74F (U.L.) HIGH/LOW 3.5/1.0 1.0/2.0 1.0/2.0 150/40 750/106.7 LOAD VALUE HIGH/LOW 70µA/0.6mA 20µA/1.2mA 20µA/1.2mA 3.0mA/24mA 15mA/64mA
NOTE: One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state.
LOGIC SYMBOL
2 3 4 5 6 7 8 9
IEC/IEEE SYMBOL
19 1 G3 3EN1 (BA) 3EN1 (AB)
1 A0 19 1 OE T/R B0 B1 B2 B3 B4 B5 B6 B7 A1 A2 A3 A4 A5 A6 A7 2 3 4 5 6 7 18 VCC = Pin 20 GND = Pin 10 17 16 15 14 13 12 11 8 9 2 18 17 16 15 14 13 12 11
SF00199
SF00200
November 15, 1994
2
8530025 14256
Philips Semiconductors
Product specification
Octal transceiver (3-State)
74F245
LOGIC DIAGRAM
A0 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9
OE
19 1 18 B0 17 B1 16 B2 15 B3 14 B4 13 B5 12 B6 11 B7
T/R VCC = Pin 20 GND = Pin 10
SF00201
FUNCTION TABLE
INPUTS OE L L H T/R L H X OUTPUTS Bus B data to Bus A Bus A data to Bus B Z
H = High voltage level L = Low voltage level X = Don't care Z = High impedance "off" state
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limits set forth in this table may impair the useful life of the device. Unless otherwise noted these limits are over the operating free-air temperature range.) SYMBOL VCC VIN IIN VOUT IOUT Tamb Tstg Supply voltage Input voltage Input current Voltage applied to output in High output state A0A7 Current applied to output in Low output state applied to output in Low output state Operating free-air temperature range Storage temperature range B0B7 PARAMETER RATING 0.5 to +7.0 0.5 to +7.0 30 to +5 0.5 to +5.5 48 128 0 to +70 65 to +150 UNIT V V mA V mA mA °C °C
RECOMMENDED OPERATING CONDITIONS
LIMITS SYMBOL VCC VIH VIL IIK IOH Supply voltage High-level input voltage Low-level input voltage Input clamp current A0A7 High-level output current output current B0B7 A0A7 IOL Tamb Low-level output current output current Operating free-air temperature range B0B7 0 PARAMETER MIN 4.5 2.0 0.8 18 3 15 24 64 +70 NOM 5.0 MAX 5.5 UNIT V V V mA mA mA mA mA °C
November 15, 1994
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