SN74AHC240

Features:

 Operating Range 2-V to 5.5-V V_CC
 Latch-Up Performance Exceeds 250 mA Per JESD 17


Application

Audio                                www.ti.com/audio
Automotive                       www.ti.com/automotive
Broadband                        www.ti.com/broadband
Digital Control                   www.ti.com/digitalcontrol
Military                              www.ti.com/military
Optical Networking           www.ti.com/opticalnetwork
Security                            www.ti.com/security
Telephony                        www.ti.com/telephony
Video & Imaging               www.ti.com/video
Wireless                           www.ti.com/wireless 


Pinout




Specifications

Supply voltage range, V_CC . . . . . .  . . . . . . . . . . . . . . . .. . . . . 0.5 V to 7 V
Input voltage range, V_I (see Note 1)  .. . . . . . . . . . . . . . . . . . 0.5 V to 7 V
Output voltage range, V_O (see Note 1) .. . . . . . . . . . 0.5 V to V_CC + 0.5 V
Input clamp current, I_IK (V_I < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Output clamp current, I_OK (V_O < 0 or V_O > V_CC) . . . . . . . . . . . . . . . ±20 mA
Continuous output current, I_O (V_O = 0 to V_CC)  . . . . . . . . . . . .. . . . ±25 mA
Continuous current through V_CC or GND . . . . . . . . . . . . . . . . . . . . . ±75 mA
Package thermal impedance, _JA (see Note 2): D package . . . .. . . 86°C/W
                                                    (see Note 2): DB package .. . . . . 96°C/W
                                                    (see Note 2): DGV package .. . . 127°C/W
                                                    (see Note 2): N package .  . . . . . 80°C/W
                                                    (see Note 2): NS package .. . . . . 76°C/W
                                                     (see Note 2): PW package . .  . 113°C/W
Storage temperature range, T_stg  . . . . . . . . . . . . . . . . . . 65°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 voltage ratings may be exceeded if the input and output current ratings are observed.
             2. The package thermal impedance is calculated in accordance with JESD 51-7. 


Description

These SN74AHC240 octal buffers/drivers are designed specifically to improve the performance and density of 3-state memory-ddress drivers, clock drivers, and bus-oriented receivers and transmitters.

The SN74AHC240 devices are organized as two 4-bit buffers/line drivers with separate output-enable (OE ) inputs. When OE is low, the device passes data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.