Texas Instruments SN75160BDWR

Overview

SN75160BDWR from Texas Instruments is an octal bidirectional GPIB (IEEE-488) bus transceiver in SOIC-20 package, featuring 8-channel data translation between terminal and bus ports, power-up/power-down glitch-free operation, high-impedance pnp inputs, and receiver hysteresis of 650 mV typical. It supports passive-pullup or 3-state driver outputs and delivers 48 mA sink current per bus port for legacy instrumentation interconnect.

For engineers reviewing the SN75160BDWR datasheet, SN75160BDWR pinout, SN75160BDWR application, or SN75160BDWR equivalent, key selection criteria include IEEE-488 compliance, dual-mode output control (TE/PE), bus isolation at VCC = 0, propagation delay ≤22 ns, and thermal operating range of 0°C to 70°C.

Technical Context

The SN75160BDWR implements a Schottky-based TTL-compatible interface with independent enable logic: TE controls driver output state (high-Z when low), while PE selects between passive-pullup (PE low) and 3-state (PE high) modes. Receiver inputs feature internal hysteresis and high-impedance pnp structure for noise immunity on shared GPIB lines.

It operates strictly within 4.75 V–5.25 V supply range and supports two distinct I/O port types: terminal-side ports (16 mA sink, 800 µA source) and bus-side ports (48 mA sink, 5.2 mA source), each with separate voltage thresholds, capacitance (16 pF), and short-circuit current limits (–75 mA terminal, –125 mA bus).

Key Specifications

Pinout & Package

SN75160BDWR uses a 20-pin SOIC (DW) package, 7.5 mm × 12.8 mm body, 1.27 mm pitch, 2.65 mm max height, RoHS-compliant NiPdAu lead finish, MSL Level-1 (260°C peak reflow), and tape-and-reel packaging (2000 pcs/reel, Q1 pin 1 quadrant).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar GPIB transceiver applications.

Compared with SN75160BN, SN75160BDWR offers surface-mount compatibility and automated assembly readiness; compared with SN75161B, it handles data-path translation rather than control signaling - making SN75160BDWR essential for DIO line interfacing in any full GPIB implementation.

Availability

SN75160BDWR is available at Aetrix Electronics and suitable for automated test equipment, GPIB instrument controllers, legacy instrument upgrades, and industrial data acquisition systems requiring stable component supply over extended production lifecycles.

Supply support for SN75160BDWR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with decades of heritage in industrial and test & measurement ICs.

The SN75160BDWR belongs to TI's legacy interface logic product line, engineered specifically for IEEE-488 GPIB system integration in commercial-grade instrumentation where reliability, noise immunity, and backward compatibility are critical.

FAQ

What is the maximum propagation delay of the SN75160BDWR?

The SN75160BDWR has a maximum propagation delay of 22 ns for bus-to-terminal transitions under recommended operating conditions (VCC = 5 V, CL = 30 pF, TA = 25°C). This value ensures compliance with IEEE-488 timing budgets for DAV, NRFD, and NDAC handshaking signals. The SN75160BDWR maintains this performance across its full 0°C to 70°C operating range.

Does the SN75160BDWR support hot-swap insertion into a live GPIB bus?

Yes, the SN75160BDWR supports hot-swap insertion: when VCC = 0 V, all outputs enter high-impedance state and do not load the GPIB bus. This behavior is explicitly guaranteed in the datasheet and enables safe replacement or insertion into powered-backplane systems without disrupting ongoing communications. The SN75160BDWR achieves this via internal power-sense circuitry that disables drivers and receivers independently of logic inputs.

How does the TE and PE pin combination affect SN75160BDWR driver output behavior?

TE (Talk Enable) and PE (Pullup Enable) jointly determine SN75160BDWR driver state: when TE is low, all 8 bus outputs are forced high-impedance regardless of PE; when TE is high, PE selects mode - PE low enables passive-pullup (internal resistors to VCC/GND), PE high enables 3-state (active drive + high-Z). This dual-control scheme allows the SN75160BDWR to emulate both legacy and modern bus architectures without external components.

What is the receiver hysteresis specification for the SN75160BDWR?

The SN75160BDWR specifies a receiver hysteresis voltage (Vhys) of 650 mV typical, measured as the difference between VIH+ and VIH− thresholds on bus-side inputs. This hysteresis improves noise immunity on long GPIB cables by preventing false triggering during slow-rising or noisy edges. The value is confirmed across temperature and supply variations and applies specifically to the B1–B8 bus input terminals of the SN75160BDWR.

Can the SN75160BDWR be used with 3.3 V logic systems?

No, the SN75160BDWR is not compatible with 3.3 V logic systems. It requires a minimum VCC of 4.75 V and operates only within 4.75 V–5.25 V. Its input thresholds (VIH = 2.0 V min, VIL = 0.8 V max) and output drive levels (VOH ≥ 2.5 V, VOL ≤ 0.5 V) are specified for 5 V TTL/LS logic families. Interfacing the SN75160BDWR with 3.3 V controllers requires level-shifting circuitry; direct connection risks undervoltage operation and timing violations.