Datasheet

ManualsBrandsNXP SEMICONDUCTORS ManualsLogic ICsLogic IC - Switch FET bus switch Single supply SO 20

1. General description

The CBT3244A provides eight bits of high-speed TTL-compatible bus switching in a

standard '244 device pinout. The low ON-state resistance of the switch allows connections

to be made with minimal propagation delay.

The CBT3244A device is organized as two 4-bit low-impedance switches with separate

output-enable (OE) inputs. When OE is LOW, the switch is on and data can ﬂow from

port A to port B, or vice versa. When OE is HIGH, the switch is open and high-impedance

state exists between the two ports.

The CBT3244A is characterized for operation from −40 °Cto+85°C.

2. Features

■ Standard '244-type pinout

■ 5 Ω switch connection between two ports

■ TTL compatible control input levels

■ Package options include:

◆ plastic small outline (SO20)

◆ shrink small outline (SSOP20)

◆ shrink small outline, QSOP (SSOP20)

◆ thin shrink small outline (TSSOP20)

◆ depopulated heatsink very thin quad ﬂat package, no leads (DHVQFN20)

■ Latch-up protection exceeds 500 mA per JESD78

■ ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per

JESD22-A115 and 1000 V CDM per JESD22-C101

CBT3244A

Octal bus switch with quad output enables

Rev. 02 — 15 September 2005 Product data sheet

Summary of content (18 pages)

PAGE 1
CBT3244A Octal bus switch with quad output enables Rev. 02 — 15 September 2005 Product data sheet 1. General description The CBT3244A provides eight bits of high-speed TTL-compatible bus switching in a standard '244 device pinout. The low ON-state resistance of the switch allows connections to be made with minimal propagation delay. The CBT3244A device is organized as two 4-bit low-impedance switches with separate output-enable (OE) inputs.
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CBT3244A Philips Semiconductors Octal bus switch with quad output enables 3. Ordering information Table 1: Ordering information Tamb = −40 °C to +85 °C Type number Topside mark Package Name Description Version CBT3244ABQ CT3244A DHVQFN20 plastic dual in-line compatible thermal enhanced very thin quad flat SOT764-1 package; no leads; 20 terminals; body 2.5 × 4.5 × 0.85 mm CBT3244APW CT3244A TSSOP20 plastic thin shrink small outline package; 20 leads; body width 4.
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CBT3244A Philips Semiconductors Octal bus switch with quad output enables 5. Pinning information 5.1 Pinning 1OE 1 1 2 20 VCC 19 2OE 1OE 1A1 1A1 2 20 VCC 19 2OE 2B4 3 18 1B1 2B4 3 18 1B1 1A2 4 17 2A4 1A2 4 17 2A4 2B3 5 16 1B2 2B3 5 1A3 6 15 2A3 1A3 6 2B2 7 14 1B3 2B2 7 14 1B3 1A4 8 13 2A2 1A4 8 13 2A2 2B1 9 12 1B4 2B1 9 12 1B4 GND 10 11 2A1 GND 10 11 2A1 CBT3244APW 002aab651 Fig 2. Pin configuration for TSSOP20 16 1B2 15 2A3 002aab654 Fig 3.
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CBT3244A Philips Semiconductors Octal bus switch with quad output enables 1 terminal 1 index area 20 VCC 1OE CBT3244ABQ 1A1 2 19 2OE 2B4 3 18 1B1 1A2 4 17 2A4 2B3 5 16 1B2 1A3 6 15 2A3 2B2 7 14 1B3 1A4 8 2B1 9 GND(1) 13 2A2 2A1 11 GND 10 12 1B4 002aab650 Transparent top view (1) The die substrate is attached to this pad using conductive die attach material. It cannot be used as a supply pin or input. Fig 6. Pin configuration for DHVQFN20 5.
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CBT3244A Philips Semiconductors Octal bus switch with quad output enables 6. Functional description Refer to Figure 1 “Logic diagram of CBT3244A”. 6.1 Function table Table 3: Function selection H = HIGH voltage level; L = LOW voltage level; Z = high-impedance OFF state Inputs Outputs 1OE 2OE 1An, 1Bn 2An, 2Bn L L 1An = 1Bn 2An = 2Bn L H 1An = 1Bn Z H L Z 2An = 2Bn H H Z Z 7. Limiting values Table 4: Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134).
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CBT3244A Philips Semiconductors Octal bus switch with quad output enables 9. Static characteristics Table 6: Static characteristics Tamb = −40 °C to +85 °C Symbol Parameter Conditions Min Typ [1] Max Unit VIK input clamping voltage VCC = 4.5 V; II = −18 mA - - −1.2 V ILI input leakage current VCC = 5.5 V; VI = GND or 5.5 V - - ±1 µA ICC quiescent supply current VCC = 5.5 V; IO = 0 mA; VI = VCC or GND - 1 3 µA ∆ICC [2] additional quiescent supply current (per input) VCC = 5.
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CBT3244A Philips Semiconductors Octal bus switch with quad output enables 10.1 AC waveforms VM = 1.5 V; VI = GND to 3.0 V tPLZ and tPHZ are the same as tdis. tPZL and tPZH are the same as ten. tPLH and tPHL are the same as tPD. 3.0 V input 1.5 V 1.5 V tPLH tPHL 0V VOH output 1.5 V 1.5 V VOL 002aab665 Fig 7. Input to output propagation delays 3V output control (LOW-level enabling) 1.5 V 1.5 V tPZL tPLZ 0V 3.5 V output waveform 1 S1 at 7 V(1) 1.5 V VOL + 0.
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CBT3244A Philips Semiconductors Octal bus switch with quad output enables 11. Test information 500 Ω from output under test CL 50 pF S1 7V open GND 500 Ω 002aab667 Test data are given inTable 8. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz; Zo = 50 Ω; tr ≤ 2.5 ns; tf ≤ 2.5 ns. The outputs are measured one at a time with one transition per measurement. CL = load capacitance includes jig and probe capacitance. RL = load resistance. Fig 9.
PAGE 9
CBT3244A Philips Semiconductors Octal bus switch with quad output enables 12. Package outline DHVQFN20: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; SOT764-1 20 terminals; body 2.5 x 4.5 x 0.85 mm A B D A A1 E c detail X terminal 1 index area terminal 1 index area C e1 e 2 9 y y1 C v M C A B w M C b L 1 10 Eh e 20 11 19 12 Dh X 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT mm A(1) max. A1 b 1 0.05 0.00 0.
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CBT3244A Philips Semiconductors Octal bus switch with quad output enables TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm SOT360-1 E D A X c HE y v M A Z 11 20 Q A2 (A 3) A1 pin 1 index A θ Lp L 1 10 e detail X w M bp 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (2) e HE L Lp Q v w y Z (1) θ mm 1.1 0.15 0.05 0.95 0.80 0.25 0.30 0.19 0.2 0.1 6.6 6.4 4.5 4.3 0.65 6.6 6.
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CBT3244A Philips Semiconductors Octal bus switch with quad output enables SSOP20: plastic shrink small outline package; 20 leads; body width 3.9 mm; lead pitch 0.635 mm D E SOT724-1 A X c y HE v M A Z 11 20 A2 A (A3) A1 θ Lp L 10 1 1/2 e e bp detail X w M 0 2.5 5 mm scale DIMENSIONS (millimetre dimensions are derived from the original inch dimensions) UNIT A max. A1 A2 A3 bp c D(1) E(1) e HE L Lp v w y Z(1) θ mm 1.73 0.25 0.10 1.55 1.40 0.25 0.31 0.20 0.25 0.
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CBT3244A Philips Semiconductors Octal bus switch with quad output enables SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm D SOT339-1 E A X c HE y v M A Z 20 11 Q A2 A (A 3) A1 pin 1 index θ Lp L 1 10 w M bp e detail X 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y Z (1) θ mm 2 0.21 0.05 1.80 1.65 0.25 0.38 0.25 0.20 0.09 7.4 7.0 5.4 5.2 0.65 7.9 7.6 1.25 1.
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CBT3244A Philips Semiconductors Octal bus switch with quad output enables SO20: plastic small outline package; 20 leads; body width 7.5 mm SOT163-1 D E A X c HE y v M A Z 20 11 Q A2 A (A 3) A1 pin 1 index θ Lp L 10 1 e bp detail X w M 0 5 10 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y mm 2.65 0.3 0.1 2.45 2.25 0.25 0.49 0.36 0.32 0.23 13.0 12.6 7.6 7.4 1.27 10.
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CBT3244A Philips Semiconductors Octal bus switch with quad output enables 13. Soldering 13.1 Introduction to soldering surface mount packages This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our Data Handbook IC26; Integrated Circuit Packages (document order number 9398 652 90011). There is no soldering method that is ideal for all surface mount IC packages.
PAGE 15
CBT3244A Philips Semiconductors Octal bus switch with quad output enables – smaller than 1.27 mm, the footprint longitudinal axis must be parallel to the transport direction of the printed-circuit board. The footprint must incorporate solder thieves at the downstream end. • For packages with leads on four sides, the footprint must be placed at a 45° angle to the transport direction of the printed-circuit board. The footprint must incorporate solder thieves downstream and at the side corners.
PAGE 16
CBT3244A Philips Semiconductors Octal bus switch with quad output enables [4] These packages are not suitable for wave soldering. On versions with the heatsink on the bottom side, the solder cannot penetrate between the printed-circuit board and the heatsink. On versions with the heatsink on the top side, the solder might be deposited on the heatsink surface. [5] If wave soldering is considered, then the package must be placed at a 45° angle to the solder wave direction.
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CBT3244A Philips Semiconductors Octal bus switch with quad output enables 16. Data sheet status Level Data sheet status [1] Product status [2] [3] Definition I Objective data Development This data sheet contains data from the objective specification for product development. Philips Semiconductors reserves the right to change the specification in any manner without notice. II Preliminary data Qualification This data sheet contains data from the preliminary specification.
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CBT3244A Philips Semiconductors Octal bus switch with quad output enables 21. Contents 1 2 3 4 5 5.1 5.2 6 6.1 7 8 9 10 10.1 11 12 13 13.1 13.2 13.3 13.4 13.5 14 15 16 17 18 19 20 General description . . . . . . . . . . . . . . . . . . . . . . 1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2 Pinning information . . . . . . . . . . . . . . . . . . . .