74ACT16543

Features:

 Members of the Texas InstrumentsWidebusE Family
 Inputs Are TTL-Voltage Compatible
 3-State True Outputs
 Flow-Through Architecture Optimizes PCB Layout
 Distributed VCC and GND Pin Configurations Minimize High-Speed Switching Noise
 EPIC (Enhanced-Performance Implanted CMOS) 1-
m Process
 500-mA Typical Latch-Up Immunity at 125°C
 Package Options Include Plastic Thin Shrink Small-Outline (DGG) and 300-mil Shrink Small-Outline (DL) Packages Using
25-mil Center-to-Center Pin Spacings, and 380-mil Fine-Pitch Ceramic Flat (WD) Packages Using 25-mil Center-to-Center Pin Spacings


Application

Audio                               www.ti.com/audio
Automotive                      www.ti.com/automotive
Broadband                      www.ti.com/broadband
Digital Contro                  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 VCC+0.5 V
Output voltage range, V_O (see Note 1)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to VCC+0.5 V
Input clamp current, I_IK (V_I < 0 or V_I > V_CC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Output clamp current, I_OK (V_O < 0 or V_O > V_CC) .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous output current, I_O (V_O = 0 to V_CC) .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA
Continuous current through V_CC or GND . . .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±400 mA
Maximum power dissipation at TA = 55°C (in still air) (see Note 2): DGG package  . . . . . . . . . . . . 1 W
                                                                                                           DL package. . . . . . . . . . . . . 1.4 W
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . 65°C to 150°C


Description

The 74ACT16543 are 16-bit registered transceivers that contain two sets of D-type latches for temporary storage of data flowing in either direction. The 'ACT16543 can be used as two 8-bit transceivers or one 16-bit transceiver.Separate latch enable (LEAB or LEBA) and output-enable (OEAB or OEBA) inputs are provided for each register to permit independent control in either direction of data flow.

The A-to-B enable (CEAB) and OEAB inputs of the 74ACT16543 must be low to enter data from A or to output data to B.Having CEAB low and LEAB low makes the A-to-B latches transparent ; a subsequent low-tohigh transition at LEAB puts the A latches in the storage mode. Data flow from B to A is similar, but requires using the CEBA, LEBA, and OEBA inputs.