PDF《SN54ABTR2245, SN74ABTR2245》

1 2

19 18 SN54ABTR2245, SN74ABTR2245 OCTAL TRANSCEIVERS AND LINE/MEMORY DRIVERS WITH 3-STATE OUTPUTS SCBS680A C MARCH

1997 C REVISED MAY

1997 3 POST OFFICE BOX

655303 ? DALLAS, TEXAS

75265 output schematic Output VCC GND

25 ? All resistor values shown are nominal. absolute maximum ratings over operating free-air temperature range (unless otherwise noted)? Supply voltage range, VCC C0.5 V to

7 V Input voltage range, VI (except I/O ports) (see Note 1) C0.5 V to

7 V Voltage range applied to any output in the high or power-off state, VO C0.5 V to 5.5 V Current into any output in the low state, IO

30 mA Input clamp current, IIK (VI <

0) C18 mA Output clamp current, IOK (VO <

0) C50 mA Package thermal impedance, θJA (see Note 2): DB package 115°C/W DGV package 146°C/W DW package 97°C/W N package 67°C/W PW package 128°C/W Storage temperature range, Tstg C65°C to 150°C ? Stresses beyond those listed under absolute maximum ratings 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. NOTES: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 2. The package thermal impedance is calculated in accordance with EIA/JEDEC Std JESD51, except for through-hole packages, which use a trace length of zero. SN54ABTR2245, SN74ABTR2245 OCTAL TRANSCEIVERS AND LINE/MEMORY DRIVERS WITH 3-STATE OUTPUTS SCBS680A C MARCH

1997 C REVISED MAY

1997 4 POST OFFICE BOX

655303 ? DALLAS, TEXAS

75265 recommended operating conditions (see Note 3) SN54ABTR2245 SN74ABTR2245 UNIT MIN MAX MIN MAX UNIT VCC Supply voltage 4.5 5.5 4.5 5.5 V VIH High-level input voltage

2 2 V VIL Low-level input voltage 0.8 0.8 V VI Input voltage

0 VCC

0 VCC V IOH High-level output current C12 C12 mA IOL Low-level output current

12 12 mA ?t/?v Input transition rise or fall rate Outputs enabled

5 5 ns/V ?t/?VCC Power-up ramp rate

200 200 ?s/V TA Operating free-air temperature C55

125 C40

85 °C NOTE 3: Unused pins (input or I/O) must be held high or low to prevent them from floating. PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. SN54ABTR2245, SN74ABTR2245 OCTAL TRANSCEIVERS AND LINE/MEMORY DRIVERS WITH 3-STATE OUTPUTS SCBS680A C MARCH

1997 C REVISED MAY

1997 5 POST OFFICE BOX

655303 ? DALLAS, TEXAS

75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS TA = 25°C SN54ABTR2245 SN74ABTR2245 UNIT PARAMETER TEST CONDITIONS MIN TYP? MAX MIN MAX MIN MAX UNIT VIK VCC = 4.5 V, II = C18 mA C1.2 C1.2 C1.2 V VCC = 4.5 V, IOH = C1 mA 3.35 3.3 3.35 VOH VCC =

5 V, IOH = C1 mA 3.85 3.8 3.85 V VOH VCC =

4 5 V IOH = C3 mA

3 3.1 V VCC = 4.5 V IOH = C12 mA 2.6 2.6 VOL VCC =

4 5 V IOL =

8 mA 0.65 0.8 0.65 V VOL VCC = 4.5 V IOL =

12 mA 0.8 0.8 V Vhys

100 mV II Control inputs VCC =

0 to 5.5 V, VI = VCC or GND ±1 ±1 ±1 ?A II A or B ports VCC = 2.1 V to 5.5 V, VI = VCC or GND ±20 ±20 ±20 ?A IOZH? VCC = 2.1 V to 5.5 V, VO = 2.7 V, OE ≥

2 V

10 10

10 ?A IOZL? VCC = 2.1 V to 5.5 V, VO = 0.5 V, OE ≥